lt1716 - sot-23, 44v, over-the-top, micropower, precision ... · lt1716 1 1716fa typical...

LT1716

1Rev. B

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TYPICAL APPLICATION

FEATURES DESCRIPTION

SOT-23, 44V, Over-the-Top,Micropower, Precision

Rail-to-Rail Comparator

The LT®1716 comparator operates on any total power supply voltage between 2.7V and 44V drawing 35µA of quiescent current. The LT1716 has a unique input stage that can be taken 44V above V–, independent of V+ supply. (Built-in resistors protect the inputs for faults below the negative supply of up to 5V.) The inputs can withstand 44V both differential and common mode.

The output stage includes a class “B” pull-up current source, eliminating the need for an external resistive pull-up and saving power. Output voltage swings to within 35mV of the negative supply and 55mV of the positive supply, which makes the comparator a good choice for low voltage single supply operation. The output stage is also designed to drive loads connected to a higher supply than the LT1716 supply, the same as an open collector output stage.

The LT1716 is available in a SOT-23 5-lead package.

Lamp Monitor

APPLICATIONS

n Operates from 2.7V to 44Vn Over-The-Top®: Input Common Mode Range

Extends 44V Above V–, Independent of V+

n Micropower: 35µA IQn Offset Voltage: 1.5mV Maxn Valid Output with Either Input 5V Below V–

n Rail-to-Rail Output Swingn Output Can Drive Loads Above V+

n Internal Pull-Up Currentn –40°C to 125°C Operating Temperature Rangen Low Profile (1mm) SOT-23 (ThinSOT™) Packagen AEC-Q100 Qualified for Automotive Applications

n Power Supply Monitorsn Relay/Lamp Drivern Oscillatorsn Peak Detectorn Level Shifting

All registered trademarks and trademarks are the property of their respective owners.

Input Bias Current vs Input Bias Voltage

3V

+

–

5V TO 44V

LAMPON/OFF

100k

RS0.15Ω

1W

0.25A TO 2.5A1716 TA01

LT1716 LAMP GOOD

CMPD6001

5k 4

3

1

5

2

1M0.1µF

RS ≥0.04

IL

VIN– (V)

–10 –5 0 5 10 15 20 45

I B– (A

)

1716 TA02

12µ

8µ

4µ

6n

3n

0

–3n

–6n

–100m

–0.5m

–1m

–1.5m

+IN = 2V +IN = 2V

+IN = 10VINPUTBELOWSUPPLY

VS = 5V, 0V

INPUTABOVE

SUPPLY

https://www.analog.com/LT1716?doc=LT1716.pdf

https://www.analog.com?doc=LT1716.pdf



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LT1716

2Rev. B

For more information www.analog.com

PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS

Supply Voltage (V+ to V–) .........................................44VDifferential Input Voltage ..........................................44VInput Voltage .....................................................44V, –5VOutput Short-Circuit Duration (Note 2) ............ IndefiniteOperating Temperature Range (Note 3) LT1716C/LT1716I ................................ –40°C to 85°C LT1716H ............................................ –40°C to 125°CSpecified Temperature Range (Note 4) LT1716C/LT1716I ................................ –40°C to 85°C LT1716H ............................................ –40°C to 125°CMaximum Junction Temperature .......................... 150°CStorage Temperature Range .................. –65°C to 150°CLead Temperature (Soldering, 10 sec) ................... 300°C

(Note 1)TOP VIEW

S5 PACKAGE5-LEAD PLASTIC TSOT-23

1

2

3

OUT

V–

+IN

5

4

V+

–IN+ –

TJMAX = 150°C, θJA = 250°C/W

ORDER INFORMATIONLEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE

LT1716CS5#PBF LT1716CS5#TRPBF LTYD 5-Lead Plastic TSOT-23 –40°C to 85°C

LT1716IS5#PBF LT1716IS5#TRPBF LTYD 5-Lead Plastic TSOT-23 –40°C to 85°C

LT1716HS5#PBF LT1716HS5#TRPBF LTYD 5-Lead Plastic TSOT-23 –40°C to 125°C

AUTOMOTIVE PRODUCTS**

LT1716HS5#WPBF LT1716HS5#WTRPBF LTYD 5-Lead Plastic TSOT-23 –40°C to 125°C

Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These

models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models.



https://www.analog.com/media/en/package-pcb-resources/package/tape-reel-rev-n.pdf?doc=LT1716.pdf

LT1716

3Rev. B


ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range of –40°C ≤ TA ≤ 85°C, otherwise specifications are at TA = 25°C. Single supply operation V+ = 5V, V– = 0V; VCM = V+/2 unless otherwise noted. (Note 4)

SYMBOL PARAMETER CONDITIONSLTC1716C/LT1716I

UNITSMIN TYP MAXVOS Input Offset Voltage 0.5V < VCM < (VCC – 1V)

0°C < TA < 70°C –40°C < TA < 85°C

l

l

300 1600 2100 2500

µV µV µV

Input Offset Voltage Drift (Note 5) 0°C < TA < 70°C –40°C < TA < 85°C

l

l

2 2

µV/°C µV/°C

IOS Input Offset Current VCM = V+/2 VCM = 0V VCM = 44V

l

l

l

3 15 1.3 0.9

nA µA µA

IB Input Bias Current VCM = V+/2

l

20 35

50 75

nA nA

V+ = 0V, VCM = 44V VCM = 0V VCM = 44V VCM = –5V

l

l

l

2 3 6 1

13 9

1.4

nA µA µA

mAInput Voltage Range (Note 7) l 0.5 44 V

CMRR Common Mode Rejection Ratio 0.5V ≤ VCM < (V+ – 1V) 0.5V ≤ VCM < 44V (Note 6)

l

l

89 81

110 110

dB dB

The l denotes the specifications which apply over the full operating temperature range of –40°C ≤ TA ≤ 85°C, otherwise specifications are at TA = 25°C. Single supply operation V+ = 5V, V– = 0V; VCM = V+/2 unless otherwise noted. (Note 4)

SYMBOL PARAMETER CONDITIONSLTC1716C/LT1716I

UNITSMIN TYP MAXPSRR Power Supply Rejection Ratio V– = 0V, VCM = 1.5V; 2.7V < V+ < 36V l 95 110 dB

Minimum Operating Supply Voltage l 2.4 2.7 VAVOL Large-Signal Voltage Gain RL = 1k; 1V < VOUT < 4V

l

200 100

500 V/mV V/mV

IS Supply Current V+ = 3V, RL = Open, VO = High

l

35 50 65

µA µA

V+ = 5V, RL = Open, VO = High

l

35 55 75

µA µA


l

40 60 85

µA µA

ISC– Output Sink Current (Note 2) VOVERDRIVE > 30mV l 10 20 mA

ISC+ Output Source Current VOVERDRIVE = 5mV, VOUT = 1V l 60 85 µA

VOL Output Voltage Swing Low (Referred to V–)

ISINK = 0mA, VOVERDRIVE = –10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA

l

l

l

l

20 75

200 550

35 110 300 900

mV mV mV mV

VOH Output Voltage Swing High (Referred to V+)

ISOURCE = 0µA, VOVERDRIVE = 10mV ISOURCE = 10µA

l

l

30 130

55 185

mV mV

Leakage Current VOUT = 40V, VOVERDRIVE > 100mV l 0.5 2 µAPropagation Delay VOVERDRIVE > 100mV, RLOAD = 10k 3 5.5 µs



LT1716

4Rev. B


SYMBOL PARAMETER CONDITIONSLT1716C/LT1716I

UNITSMIN TYP MAXVOS Input Offset Voltage –14.5V < VCM < 14V

0°C < TA < 70°C –40°C < TA < 85°C

l

l

300 1500 2000 2400

µV µV µV

Input Offset Voltage Drift (Note 5) 0°C < TA < 70°C –40°C < TA < 85°C

l

l

2 2

µV/°C µV/°C

IOS Input Offset Current VCM = 0V VCM = 29V VCM = –15V

l

l

l

3 15 0.9 1.3

nA µA µA

IB Input Bias Current VCM = 0V

l

30 50

60 100

nA nA

VCM = 29V VCM = –15V VCM = –20V

l

l

l

6 3 1

9 13 1.4

µA µA

mAInput Voltage Range (Note 7) l –14.5 14 V

CMRR Common Mode Rejection Ratio –14.5V < VCM < 14V –14.5V < VCM < 29V (Note 6)

l

l

92 81

110 98

dB dB

PSRR Power Supply Rejection Ratio VS = ±1.35V to ±22V l 90 110 dBMinimum Operating Supply Voltage l 2.4 2.7 V

AVOL Large-Signal Voltage Gain RL = 6k; –14V < VOUT < 14V

l

500 400

1000 V/mV V/mV

IS Supply Current VS = ±15V, RL = Open, VO = High l 40 95 µAISC

– Output Sink Current (Note 2) VOVERDRIVE > 30mV l 10 20 mAISC

+ Output Source Current VOVERDRIVE = 5mV, VOUT = –14V l 70 105 µA

The l denotes the specifications which apply over the full operating temperature range of –40°C ≤ TA ≤ 85°C, otherwise specifications are at TA = 25°C. Split supply operation VS = ±15V, VCM = 0V unless otherwise noted. (Note 4)

SYMBOL PARAMETER CONDITIONSLT1716C/LT1716I

UNITSMIN TYP MAXVOL Output Voltage Swing Low

(Referred to V–)ISINK = 0mA, VOVERDRIVE = –10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA

l

l

l

l

20 75

200 550

35 110 300 900

mV mV mV mV



l

l

45 140

75 210

mV mV

Leakage Current VOUT = 25V, VOVERDRIVE > 100mV l 0.6 2 µAPropagation Delay VOVERDRIVE > 100mV, RLOAD = 10k 5.5 9 µs

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range of –40°C ≤ TA ≤ 85°C, otherwise specifications are at TA = 25°C. Split supply operation VS = ±15V, VCM = 0V unless otherwise noted. (Note 4)



LT1716

5Rev. B


ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range of –40°C < TA < 125°C, otherwise specifications are at TA = 25°C. Single supply operation V+ = 5V, V– = 0V; VCM = VCC/2 unless otherwise noted. (Note 4)

SYMBOL PARAMETER CONDITIONSLT1716H

UNITSMIN TYP MAXVOS Input Offset Voltage 0.5V < VCM < (VCC – 1V)

l

300 1600 2900

µV µV

Input Offset Voltage Drift (Note 5) l 2 µV/°CIOS Input Offset Current VCM = V+/2

VCM = 0V VCM = 44V

l

l

l

3 220 1.3 0.9

nA µA µA

IB Input Bias Current VCM = V+/2

l

20 50 900

nA nA

V+ = 0V, VCM = 44V VCM = 0V VCM = 44V VCM = –5V

l

l

l

2 3 6 1

25 14 1.4

nA µA µA

mAInput Voltage Range (Note 7) 0.5 44 V

CMRR Common Mode Rejection Ratio 0.5V < VCM < (V+ – 1V) 0.5V < VCM < 44V (Note 6)

l

l

75 72

110 110

dB dB

PSRR Power Supply Rejection Ratio V– = 0V, VCM = 1.5V, 2.7V < V+ < 36V l 85 110 dBMinimum Operating Supply Voltage l 2.4 2.7 V

AVOL Large-Signal Voltage Gain RL = 1k, 1V < VOUT < 4V RL = 6k

l

200 20

500 V/mV V/mV

IS Supply Current per Amplifier V+ = 3V, RL = Open, VO = High

l

35 50 70

µA µA


l

35 55 75

µA µA


l

40 60 85

µA µA


ISC+ Output Source Current VOVERDRIVE = 5mV, VOUT = 1V l 60 110 µA



l

l

l

l

20 75

200 550

60 170 480

1200

mV mV mV mV


ISOURCE = 0µA, VOVERDRIVE = –10mV ISOURCE = 10µA

l

l

50 130

110 220

mV mV

Leakage Current VOUT = 40V, VOVERDRIVE > 100mV l 1.7 5 µAPropagation Delay VOVERDRIVE > 100mV, RLOAD = 10k 6 9 µs



LT1716

6Rev. B


ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range of –40°C < TA < 125°C, otherwise specifications are at TA = 25°C. Split supply operation VS = ±15V, VCM = 0V unless otherwise noted. (Note 4)

SYMBOL PARAMETER CONDITIONSLT1716H

UNITSMIN TYP MAX

VOS Input Offset Voltage –14.5V < VCM < 14V

l

300 1500 2900

µV µV

Input Offset Voltage Drift (Note 5) l 2 µV/°C

IOS Input Offset Current VCM = 0V VCM = 29V VCM = –15V

l

l

l

3 280 0.9 1.3

nA µA µA

IB Input Bias Current VCM = 0V

l

30 50

60 1400

nA nA

VCM = 29V VCM = –15V VCM = –20V

l

l

l

6 3 1

20 30 1.4

µA µA

mA

Input Voltage Range (Note 7) l –14.5 14 V

CMRR Common Mode Rejection Ratio –14.5V < VCM < 14V –14.5V < VCM < 29V (Note 6)

l

l

85 70

110 93

dB dB

PSRR Power Supply Rejection Ratio VS = ±1.35V to ±22V l 80 110 dB

Minimum Operating Supply Voltage l 2.4 2.7 V

AVOL Large-Signal Voltage Gain RL = 6k; –14V < VOUT < 14V RL = 6k; –13V < VOUT < 13V

l

500 50

1000 V/mV V/mV

IS Supply Current VS = ±15V, RL = Open, VO = High 40 95 µA


ISC+ Output Source Current VOVERDRIVE = 5mV, VOUT = –14V l 70 155 µA



l

l

l

l

20 75

200 550

70 170 480

1200

mV mV mV mV



l

l

45 140

120 250

mV mV

Leakage Current VOUT = 25V, VOVERDRIVE > 100mV l 1.5 5 µA

Propagation Delay VOVERDRIVE > 100mV, RLOAD = 10k 5.5 10 µs

Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.Note 2: A heat sink may be required to keep the junction temperature below absolute maximum.Note 3: The LT1716C/LT1716I are guaranteed functional over the operating temperature range of –40°C to 85°C. The LT1716H is guaranteed functional over the operating temperature range of –40°C to 125°C.

Note 4: The LT1716C is guaranteed to meet specified performance from 0°C to 70°C. The LT1716C is designed, characterized and expected to meet performance from –40°C to 85° but is not tested or QA sampled at the temperatures. The LT1716I is guaranteed to meet specified performance from –40°C to 85°C. The LT1716H is guaranteed to meet specified performance from –40°C to 125°C.Note 5: This parameter is not 100% tested.Note 6: Typical input offset voltage of 500µV at VCM = 44V above V– and a maximum input offset voltage of 4mV at VCM = 44V above V–.Note 7: If one input is within this input range, the other input can go 5V below V– and the output will be valid.



LT1716

7Rev. B


TYPICAL PERFORMANCE CHARACTERISTICS

Output Low Voltage vs Sink Current

Output High Voltage vs Source Current

Input Bias Current with Inputs Driven Above the Supply

Input Bias Current with Inputs Driven Below the Supply Supply Current vs Temperature

Positive Supply Currentvs Output Sinking Current

Input Bias Current vs Common Mode Voltage

Input Bias Current vs Temperature

Input Bias Current vs Differential Input Voltage

VCM (V)0

I BIA

S (µ

A)

10

8

6

4

2

0

–2

1716 G01

5 10 15 20 25 30

VS = ±15V

125°C

INPUTSEXCEED SUPPLY

125°C

25°C 85°C

–55°C

TEMPERATURE (°C)–50

–0.0100

–0.0010

0.0000

0.0010

0.0100

0.1000

1.0000

INPU

T BI

AS C

URRE

NT (µ

A)

0 50 100 150

1716 G02

–25 25 75 125

CURRENTOUT OF PIN

CURRENTOUT OF PIN

V+ = 15VV– = –15VVCM = 0V

V+ = 5VV– = 0VVCM = 2.5V

DIFFERENTIAL INPUT VOLTAGE (V)–0.2

I BIA

S CU

RREN

T (n

A)

–1

0

1

–0.05 0.05 0.2

1716 G03

–2

–3

–4–0.15 –0.1 0 0.1 0.15

V+ = 15VV– = –15V

–IN +IN

TRANSITIONREGION

LOADING SINK CURRENT (mA)0

OUTP

UT V

OLTA

GE (R

ELAT

IVE

TO G

ND) (

V)

2.0

1.6

1.2

0.8

0.4

0

1716 G04

2 4 6 8 10 12 14 16 18 20

V+ = 5VV– = 0V

VOL AT 85°C

VOL AT 125°C

VOL AT –55°C

VOL AT 25°C

VCM (V)0

I BIA

S (µ

A)

10

8

6

4

2

0

–2

1716 G06

5 10 15 20 25 30 35 40 45 50

125°C

85°C

–55°C25°C

INPUTSEXCEED SUPPLY

V+ = 5VV– = 0V

VCM (V)–5

I BIA

S (µ

A)

200

0

–200

–400

–600

–800

–1000

–1200

1716 G07

–4 –3 –2 –1 0

V+ = 2.7V TO 44VV– = 0V

–55°C < TA < 125°C


0

SUPP

LY C

URRE

NT (µ

A)

10

30

40

50

100

70

0 50 75

1716 G08

20

80

90

60

–25 25 100 125 150

V+ = 5VV– = 0V

OUTPUT LOW

OUTPUT HIGH

OUTPUT SINK CURRENT (mA)0.1

10

POSI

TIVE

SUP

PLY

CURR

ENT

(µA)

100

1000

1 10 100

1716 G09

VS = ±15V

TA = 25°C

VS = 5V

LOADING SOURCE CURRENT (µA)0

OUTP

UT H

IGH

VOLT

AGE

(REL

ATIV

E TO

V+ ) (

V) 5.0

4.9

4.8

4.7

4.6

4.5

1716 G05

5 10 15 20 25 30 35 40 45 50

V+ = 5VV– = 0V

VOH AT 85°C, 125°C

VOH AT –55°C

VOH AT 25°C



LT1716

8Rev. B



Output Sinking Currentvs Total Supply Voltage

Total Switching Timevs Temperature

Total Switching Timevs Overdrive

Total Switching Timevs Total Supply Voltage

Total Switching Timevs Pull-Up Resistor Response Time

Output Leakage Currentvs Output Voltage Reverse Supply Current

Output Sinking Current Limitvs Temperature

OUTPUT VOLTAGE (V)5

OUTP

UT L

EAKA

GE C

URRE

NT (n

A)

500

450

400

350

300

250

1716 G10

10 15 20 25 30 35 40 45

V+ = 5VV– = 0VTA = 25°C

REVERSE VOLTAGE (V)0

REVE

RSE

CURR

ENT

(mA)

0.6

0.5

0.4

0.3

0.2

0.1

0

1716 G27

5 10 15 20 25

TA = 25°C


0

OUTP

UT C

URRE

NT L

IMIT

(mA)

5

10

15

20

0 50 100 150

1716 G11

25

30

–25 25 75 125

OUTPUT SHORTED TO V+

VS = 5V

VS = ±15V

TOTAL SUPPLY VOLTAGE (V)1

0

OUTP

UT S

INKI

NG L

IMIT

(mA)

5

10

15

20

30

10 100

1716 G12

25

OUTPUT SHORTED TO V+

TA = 25°C

TEMPERATURE (°C)0

1

10

100

50 10025 75 125

1716 G13

TOTA

L SW

ITCH

ING

TIM

E (µ

s)

–50 –25 150

RL = 10kVOUT = 90% VFINAL (RISE)VOUT = 10% VFINAL (FALL)VSTEP = 100mVVOVERDRIVE = 10mV

VS = ±15VFALL

VS = ±15VRISE

VS = ±2.5VRISE

VS = ±2.5VFALL

OVERDRIVE (mV)10

TOTA

L SW

ITCH

ING

TIM

E (µ

s)

30

100

1716 G14

1

10

20 1009080706050400

RL = 10kVOUT = 90% VFINAL (RISE)VOUT = 10% VFINAL (FALL)VSTEP = 100mVTA = 25°C

±15VRISE TIME

±15VFALL TIME

±2.5VFALL TIME

±2.5VRISE TIME

TOTAL SUPPLY VOLTAGE (V)10

1

10

100

20 30

1716 G15

TOTA

L SW

ITCH

ING

TIM

E (µ

s)

0 40

RL = 10kVOUT = 90% VFINAL (RISE)VOUT = 10% VFINAL (FALL)VCM = 1/2 VTOTALSUPPLYVSTEP = 100mVVOVERDRIVE = 10mV

FALL

RISE

PULL-UP RESISTOR (k) 1 10

1

TOTA

L SW

ITCH

ING

TIM

E (µ

s)

10

100

100 1000 10000

1716 G16

VOUT = 90% VFINALVSTEP = 100mVVOVERDRIVE = 10mVTA = 25°C

VS = ±2.5VRISE

VS = ±15VRISE

30V26V

5V

0VTIME (µs)VS = 5V, 0V

VOD = 10mVRL = 10k, 100k, OPENVIN

+ = 26V TO 30VVIN

– = 29.99V

1716 G17

VIN+

VOUT RL = 10k

RL = 100k

RL = OPEN



LT1716

9Rev. B



Response Time Response Time Response Time

30V26V

5V

0VTIME (µs)VS = 5V, 0V

VOD = 10mVRL = 10k, 100k, OPENVIN

+ = 30V TO 26VVIN

– = 26.01V

1716 G18

VIN+

VOUT

25V21V15V

–15V

TIME (µs)VS = ±15VVOD = 10mVRL = 10k, 100k, OPENVIN

+ = 21V TO 25VVIN

– = 24.99V

1716 G19

VIN+

VOUTRL = 10k, 100k

RL = OPEN

25V21V15V

–15V


+ = 25V TO 21VVIN

– = 21.01V

1716 G20

VIN+

VOUT

Response Time Response Time Response Time

2.5V VOUT5V2.4V

0V


+ = 2.4V TO 2.5VVIN

– = 2.49V

1716 G21

VIN+

RL = 10k RL = 100k

RL = OPEN

2.6V

2.5V5V

0V

TIME (µs)VS = 5VVOD = 10mVRL = 10k, 100k, OPENVIN

+ = 2.6V TO 2.5VVIN

– = 2.51V

1716 G22

VIN+

VOUT

0V

–100mV15V

–15V


+ = –100mV TO 0VVIN

– = –10mV

1716 G23

VIN+

VOUTRL = 10k, 100k

RL = OPEN

Response Time Below VS– Fault (Rising) Below VS

– Fault (Falling)

100mV

0V15V

–15V


+ = 110mV TO 0mVVIN

– = 10mV

1716 G24

VIN+

VOUT

–14.9V–19V

15V

–15V

TIME (µs)VS = ±15VRL = 10k, 100k, OPENVIN

+ = –19V TO –14.9VVIN

– = –15V

1716 G25

VIN+

VOUTRL = 10k, 100k

RL = OPEN

–14.9V–19V

15V

–15V

TIME (µs)VS = ±15VRL = 10k, 100k, OPENVIN

+ = –14.9V TO –19VVIN

– = –15V

1716 G26

VIN+

VOUT



LT1716

10Rev. B


APPLICATIONS INFORMATIONThe LT1716 comparator features low power operation with exceptional input precision with rail-to-rail input and output swing. The comparator operates flawlessly even when the inputs are pulled over the positive rail or below the negative rail.

Supply Voltage

The LT1716 operates from 2.7V to 44V. The comparator can be shut down by removing V+. In this condition, the input bias current is typically less than 3nA, even if the inputs are 44V above the negative supply. The LT1716 is protected against reverse battery voltages of up to 20V. The reverse battery current is resistive as shown in the Reverse Supply Current graph.

Inputs

The comparator inputs can swing from 0.5V above to 44V above V–. If one input is within this range, the other input can be forced up to 5V below V– without phase reversal occuring at the output.

The LT1716 has three stages—NPN, PNP and common base (see Simplified Schematic)—resulting in three distinct operating regions and two transition regions as shown in the Input Bias Current vs Common Mode typical performance curve.

For input voltages about 0.8V or more below V+, the PNP input stage is active and the input bias current is typically –4nA. The PNP differential input stage will have bias cur-rent that flows out of the device. With a differential input voltage of even just 100mV or so, there will be zero bias current into the higher of the two inputs, while the current flowing out of the lower input will be twice the measured bias current.

When the input voltage is about 0.5V or less from V+, the NPN state is operating and the input bias current is typically 10nA. Increases in temperature will cause the voltage at which operation switches from the PNP stage to the NPN stage to move towards V+. The input offset voltage of the NPN stage is untrimmed and is typically 500µV.

A Schottky diode in the collector of each NPN transistor of the NPN input stage allows the LT1716 to operate with either or both of its inputs above V+. At about 0.3V above V+, the NPN transistor is fully saturated and the input bias current is typically 4µA at room temperature. The input offset voltage is typically 500µV when operating above V+. The LT1716 will operate with its input 44V above V–, regardless of V+.

The transition to the negative common mode input stage occurs at 0.3V above V–. Above this trip point the PNP stage is active. When the inputs are 0.3V below V–, the common base input stage is active in addition to the PNP stage. The input bias current out of each input becomes VIN/5kΩ. The LT1716 is designed to operate when either input falls below the negative supply. Internal resistors protect the inputs for faults below the negative supply of up to 5V without phase reversal. The built-in 5k resistor limits the current at each input to 1mA at 5V below the negative supply. External matched input resistors can be added for increased voltage fault operation below the negative supply but the maximum input current should be kept under 1mA.

Input Protection

The inverting and noninverting input pins of the LT1716 have on-chip protection. ESD protection is provided to prevent damage during handling. The input transistors have voltage clamping and limiting resistors to protect against excursions as much as 5V below V–. There are no clamping diodes between the inputs and the maximum differential input voltage is 44V.

Output

The output stage of the LT1716 can drive loads connected to a supply more positive than the device, the same as comparators with open collector output stages. The output of the LT1716 can be pulled up to 44V above V–, regardless of V+.



LT1716

11Rev. B


SIMPLIFIED SCHEMATIC

Q18

Q34

Q17

Q16

Q15

Q61

Q6 B A

Q5

R1 5kIN

–

V CC

V EE

B A

Q8Q9

Q10

Q62

Q33

Q39

D5

Q35

Q3Q4

Q1

Q53

Q7

Q2

R2 5kIN

+

D4D3

Q21

3µA

Q20

Q11

R3 60k

R4 30k

R5R8

R6

R9R1

0R1

1

R7

Q12

Q13

Q14

Q25

Q24

Q31

Q32

Q22

Q23

Q36

Q37

Q38

Q30

1716

SS

Q26

Q27

D7

Q28

D8Q2

9 OUT

D6D2

D1



LT1716

12Rev. B


PACKAGE DESCRIPTIONS5 Package

5-Lead Plastic TSOT-23(Reference LTC DWG # 05-08-1635)

1.50 – 1.75(NOTE 4)2.80 BSC

0.30 – 0.45 TYP 5 PLCS (NOTE 3)

DATUM ‘A’

0.09 – 0.20(NOTE 3) S5 TSOT-23 0302

PIN ONE

2.90 BSC(NOTE 4)

0.95 BSC

1.90 BSC

0.80 – 0.90

1.00 MAX0.01 – 0.100.20 BSC

0.30 – 0.50 REF

NOTE:1. DIMENSIONS ARE IN MILLIMETERS2. DRAWING NOT TO SCALE3. DIMENSIONS ARE INCLUSIVE OF PLATING4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR5. MOLD FLASH SHALL NOT EXCEED 0.254mm6. JEDEC PACKAGE REFERENCE IS MO-193

3.85 MAX

0.62MAX

0.95REF

RECOMMENDED SOLDER PAD LAYOUTPER IPC CALCULATOR

1.4 MIN2.62 REF

1.22 REF



LT1716

13Rev. B


Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

REVISION HISTORYREV DATE DESCRIPTION PAGE NUMBER

B 10/19 Added Automotive Qualified Parts All



LT1716

14Rev. B

For more information www.analog.comwww.analog.com

10/19

ANALOG DEVICES, INC. 2002–2019

RELATED PARTS

TYPICAL APPLICATIONSOvercurrent Flag

3V

+

–

4.5V TO 44V LT1634-1.25

113k1%

10M1%RS

1716 TA03

LT1716 OVERCURRENT

CMPD6263

11.8k1%

10.7k1%

4

3

1

5

2

IMAX =0.1

RS

0.1µF

LOAD 10M1%

Charge/Discharge Indicator

3V

+

–

0.1Ω

CHARGECURRENT

681Ω1%

1M1%

3V TO 44V

1716 TA04

LT1716 CHARGE

CMPD6263

681Ω1% 1M

1%

4

3

1

5

2

0.1µF

LOAD VCHARGER+–

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LTC1998 Micropower Li-Ion Battery Monitor 1% Trip Point Adjustable from 2.5V to 3.25V




https://www.analog.com/LTC1442?doc=LT1716.pdf





lt1716 - sot-23, 44v, over-the-top, micropower, precision ... · lt1716 1 1716fa typical...

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