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.