1 Features

• High output current: ±150mA typical ISC at 5.5V

• Fast enable from shutdown: 0.9μs typical

• Wide operational supply voltage: 1.5V to 5.5V

• Low input offset voltage: ±250μV typical

• Fail-safe inputs: No diode from inputs to V+

• Optimized quiescent current: 165μA/ch typical

• Rail-to-rail input and output

• Gain bandwidth product: 3MHz typical at 5.5V

• Thermal noise floor: 16nV/√Hz typical

• Unity-gain stable

• Drives up to 250pF without sustained oscillations

• Internal RFI and EMI filtered input pins

• Operating temperature range: –40°C to 125°C

2 Applications

• Optimized for AEC-Q100 grade 1 applications

• Traction inverter

• Battery management systems (BMS)

• On-board charger (OBC) and wireless charger

• HEV/EV DC/DC converter

• Body electronics and lighting

3 Description

The OPAx310-Q1 family of op amps includes

single (OPA310-Q1), dual (OPA2310-Q1), and quadchannel

(OPA4310-Q1), low-voltage (1.5V to 5.5V),

high output current operational amplifiers (op amps)

with rail-to-rail input and output swing capabilities.

The OPA310S-Q1 variant also features a very

fast shutdown response and has a typical enable

time of 0.9μs that allows for power savings when

the application involves duty cycling the amplifier

signal chain. OPAx310-Q1 family has a robust ESD

performance with fail safe input ESD structure where

there are no diodes connected from inputs to the

positive power supply rail.

OPAx310-Q1 is offered in power pad, standard, small

size package variants and has an internal current limit

protection, thermal shutdown protection that enables

additional robustness when operating with high output

current. OPAx310-Q1 can swing very close to the

rails and has a short-circuit current of 75mA minimum

across temperature at 5.5V power supply. Additional

output current capability can be achieved by carefully

connecting multiple op amps in parallel. OPAx310-Q1

devices are an excellent choice for LED driver and

other high current applications and can also be used

as a reference buffer, guard amplifier, or as a discrete

LDO.

The robust design of the OPAx310-Q1 family

simplifies circuit design. These op amps feature an

integrated RFI and EMI rejection filter with no-phase

reversal in input overdrive conditions. These devices

also deliver excellent AC performance with a gain

bandwidth of 3MHz and can drive up to 250pF of

capacitor load with no sustained oscillations, enabling

designers to achieve both improved performance and

a lower-power consumption.