RSP, RSN to GND Voltage Continuous ................-0.3V to +30V

RSP, RSN to GND Load-Dump Voltage Duration

(VBAT = 40V) with Typical Application Circuit...................... 1s

RSP, RSN to GND Reverse-Battery Voltage Duration

(VBAT = -20V) with Typical Application Circuit ......Continuous

Differential Input Voltage (RSP - RSN) ..............................±0.3V

VCC to GND .........................................................-0.3V to +6.0V

OUT to GND............................................. -0.3V to (VCC + 0.3V)

Output Short Circuit to Ground..................................Continuous

Continuous Input Current into RSN, RSP*.......................±50mA

Continuous Input Current into OUT* ................................±25mA

Thermal Limits (Note 1)

Continuous Power Dissipation (TA = +70°C) Multiple-Layer PCB

5 SC70 (derate 3.1mW/°C above +70°C) ................246.9mW

θJA .............................................................................324°C/W

θJC.............................................................................115°C/W

Operating Temperature Range......................... -40°C to +125°C

Junction Temperature......................................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow).......................................+260°C

(VCC = 5V, VBAT = VRS+ = 12V, VSENSE = (VRS+ - VRS-) = 0V, RRSP = RRSN = 500Ω, ROUT = 10kΩ, TA = -40°C to +125°C. Typical

values are at TA = +25°C, unless otherwise noted. See the Typical Application Circuit.) (Note 2)

*Junction temperature rating due to power dissipation must also be observed.

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer

board. For detailed information on package thermal considerations, refer to

www.maximintegrated.com/thermal-tutorial.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DC CHARACTERISTICS

Input Common-Mode Voltage

Range

VRSP,

VRSN

Inferred from CMRR test

4

28

V

Supply Voltage Range

VCC

Inferred from PSRR test

2.7

5.5

V

Input Offset Voltage (Note 3)

VOS

TA = +25°C

±0.3

±1.2

mV

TA = -40°C to +125°C

±1.6

Common-Mode Rejection

Ratio

CMRR

VBAT = +4V to +28V

TA = +25°C

100

120

dB

TA = +125°C

90

Power-Supply Rejection Ratio

PSRR

VCC = +2.7V to +5.5V

90

120

dB

Quiescent Supply Current

ICC

VCC = 5V

20

55

µA

Input Bias Current (Note 4)

IB+, IB-

TA = +25°C

0.8

2

5.6

µA

TA = -40°C to +125°C

0.65

6.5

Input Bias Current

Mismatch

∆IB/IB

2 x (IB+ - IB-)/(IB+ + IB-)

TA = +25°C

±1

±12

%

TA = -40°C to

+125°C

±15

%

Input Current in Shutdown

IRSP +

IRSN

TA = +25°C, VCC = 0V

0.01

1

µA

TA = -40°C to +125°C, VCC = 0V

10

Voltage Gain

Gain = ROUT/RRSP

20

V/V

Voltage Gain Error (Notes 3, 5)

TA = +25°C

±0.2

±1.5

%

TA = -40°C to +125°C

±2.0

www.maximintegrated.com

Maxim Integrated │ 2

MAX9937

Current-Sense Amplifier with

Reverse-Battery Protection

Electrical Characteristics

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these

or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect

device reliability.

Absolute Maximum Ratings