MAX4373/MAX4374/MAX4375

Low-Cost, Micropower, High-Side

Current-Sense Amplifier +

Comparator + Reference ICs

Maxim Integrated | 3

www.maximintegrated.com

Electrical Characteristics (continued)

(VCC = +2.7V to +28V, VRS+ = 0 to +28V, VSENSE = 0V, VRESET = 0V, RLOAD= 1MΩ, TA = TMIN to TMAX, unless otherwise noted.

Typical values are at TA = +25°C.) (Note 1)

±0.3

±1.7

±2.7

TA = -40°C to +85°C

TA = +25°C

VSENSE =

20mV to 100mV,

VCC = 12V, VRS+ =

12V, Gain = 100

Output Low Voltage

VOL

0.6

V

ISINK = 1mA

Propagation Delay

4

µs

CL = 10pF, RL = 10kΩ pull-up to 5V,

5mV of overdrive

Input Bias Current

IB

±2.2

±15

nA

Comparator Hysteresis

-9

mV

0.1

ms

Saturation Recovery Time

(Note 8)

VCC = 12V, VRS+ = 12V, CLOAD = 10pF

dB

ms

Power-Supply Rejection

Power-Up Time to 1% of Final

Value

PSR

20

VSENSE = 100mV to

6.25mV

VSENSE = 6.25mV to

100mV

±2.7

TA = -40°C to +85°C

TA = +25°C

+50

+100

MAX437_F

MAX437_H

VSENSE = 6.25mV

VSENSE = 100mV,

Gain = +100V/V

VSENSE = 100mV,

Gain = +50V/V

VSENSE = 100mV,

Gain = +20V/V

50

110

120

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

72

87

OUT Output Resistance

ROUT

1.5

Ω

Capacitive Load Stability

1000

pF

OUT Settling Time to 1% of

Final Value

20

µs

0.5

Comparator Threshold

VTH

590

600

610

mV

Gain

-3dB Bandwidth

BW

200

kHz

AV

+20

V/V

Gain Accuracy

ΔAV

±0.3

±1.7

%

CONDITIONS

VOUT = 2V, VRS+ > 2V

VSENSE = 100mV

No sustained oscillations

Gain = +20V/V,

VCC = 12V,

VRS+ = 12V,

CLOAD = 10pF

VSENSE = 100mV, CLOAD = 10pF,

VCC = 12V, VRS+ = 12V

TA = +25°C

VRS+ = 12V,

VCC = 12V,

CLOAD = 10pF

MAX437_T

VSENSE =

20mV to 150mV;

VCC = 12V; VRS+ =

12V; Gain = 20, 50

586

614

TA = TMIN to TMAX

COMPARATOR (Note 9)