1 Features

• NEW LM393B and LM2903B

• Improved specifications of B-version

– Maximum rating: up to 38V

– ESD rating (HBM): 2kV

– Low input offset: 0.37mV

– Low input bias current: 3.5nA

– Low supply-current: 200μA per comparator

– Faster response time of 1μsec

– Extended temperature range for LM393B

– Available in tiny 2 x 2mm WSON package

• B-version is drop-in replacement for LM293,

LM393 and LM2903, A and V versions

• Common-mode input voltage range includes

ground

• Differential input voltage range equal to maximumrated

supply voltage: ±38 V

• Low output saturation voltage

• Output compatible with TTL, MOS, and CMOS

2 Applications

• Vacuum robot

• Single phase UPS

• Server PSU

• Cordless power tool

• Wireless infrastructure

• Applicances

• Building automation

• Factory automation & control

• Motor drives

• Infotainment & cluster

3 Description

The LM393B and LM2903B devices are the

next generation versions of the industry-standard

LM393 and LM2903 comparator family. These next

generation B-version comparators feature lower offset

voltage, higher supply voltage capability, lower supply

current, lower input bias current, lower propagation

delay, and improved 2 kV ESD performance and

input ruggedness through dedicated ESD clamps.

The LM393B and LM2903B can drop-in replace the

LM293, LM393 and LM2903, for both A and V

grades.

All devices consist of two independent voltage

comparators that are designed to operate from a

single power supply over a wide range of voltages.

Quiescent current is independent of the supply

voltage.