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
Applications
Power Module
Adapter
Led Lighting
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