TPA7252 36-V Dual Op Amps with Internal 2.5-V Reference

Description

The TPA7252 combines a dual operational amplifier and a fixed 2.5 V shunt voltage reference, which are often used in the control circuitry of power supplies.

The operational amplifier A has the noninverting input internally tied to the shunt reference which is used for the voltage control loop. The operational amplifier B is independent of the current control loop.

The TPA7252 has a 220 μA power supply excluding the current in the reference, and the minimum working current for the reference is 50 μA, which can be used in low power applications.

Features

 Operational Amplifier

− Supply Voltage: 3 V to 36 V

− Low Supply Current: Maximum 220 μA

− Input Rail to −VS, Rail to Rail Output

− Excellent High Frequency PSRR+: 65 dB at 100 kHz

− Offset Voltage: ±4 mV Maximum at 25°C

 Voltage Reference

− 2.5 V Output, Stable with no load to 1 μF load

− TPA7252: 1% initial accuracy

− TPA7252A: 0.4% initial accuracy

 −40°C to 125°C Operation Temperature Range