描述 Description

The AAT2612 is a multiple rail power management IC. It integrates a 600mA high-frequency switching-converter and three 300mA linear regulators. The switching power supply is a highly-integrated monolithic step-down converter operating at 1.5MHz, achieving high efficiency with small external components. The three linear regulators are high PSRR low dropout regulators (LDOs) providing accurate regulation and excellent transient response.
The step down converter is programmable with external feedback resistors, and the three LDOs are fixed voltage outputs of six combinations for 1.8V, 2.8V, 3.0V and 3.3V. Integrated over-current or over-temperature protection circuitry becomes active as appropriate, when either fault occurs, and the AAT2612 recovers automatically when the fault is removed.
The AAT2612 is available in a Pb-free, thermally enhanced 20-pin TQFN33 package.

特性 Features

·Current Mode Control DC/DC Converter:
·Programmable Output Up to 600mA
·1.5MHz Switching Frequency
·Up to 90% Efficiency
·Integrated Switching Power FETS
·Integrated Compensation Network
·Internal Current Limit
·3 Low Dropout Regulators with Separate Enable Pins:
·300mA per Channel
·High PSRR
·Factory Programmable Output
·Integrated Soft-Start
·Over-Current Protection
·Over-Thermal Protection
·TQFN33-20 Package