Microchip Technology MIC23060-G4YMT-TR

Description
The MIC23060 is a power management IC that integrates a high-frequency DC/DC converter with HyperLight Load™ mode and a low input voltage capable LDO. It offers two output voltages at high efficiency while maintaining a low total system cost. The MIC23060 provides sequencing of the two outputs in every potential combination of turn-on and turn-off sequencing. The LDO is designed to post-regulate from the output of the DC/DC converter for high system efficiency or power directly from the battery. The DC/DC converter is a HyperLight Load™ converter with high efficiency at light and full operating current. The MIC23060 is a μCap design, operating with small ceramic output capacitors and tiny inductors for stability, reducing required board space and component cost.

Features
2.7V to 5.5V supply voltage range
Tiny 12-pin 2.5mm x 2.5mm Thin MLF® package
Integrated sequencing
Dual Input LDO™ can turn-on prior to DC/DC converter and automatically switch to post regulation from the DC/DC converter after it starts
Power for LDO from input during start-up
Adjustable delay time between outputs
Zero-current off mode
Current-limit and thermal shutdown protection

HyperLight Load™ DC/DC Converter
Up to 600mA output current in PWM mode (shared between switcher and linear LDO regulator outputs)
4MHz frequency in continuous PWM mode
Tiny 2.2µH inductor, 4.7uF capacitor
85% Efficiency at 1mA output current
>90% peak efficiency
Low output voltage ripple across all loads

LDO Regulator
Low Input voltage LDO regulator
Stable with ceramic output capacitors
Regulates from the output of the DC/DC converter
300mA output current capability
High Accuracy: ±3% over temperature
High PSRR: greater than 60dB
Very low quiescent current: 16μA

Applications
Mobile phones
PDAs/pocket PCs
Digital cameras/DSP power supply