FEATURES
Input voltage range: 2.4 V to 5.5 V Tiny 16-ball, 2 mm × 2 mm WLCSP package Overcurrent and thermal protection Soft start Factory programmable undervoltage lockout on VDDA system supply of either 2.2 V or 3.9 V Factory programmable default output voltages for all 3 channels Buck1 and Buck2 key specifications Current mode architecture for excellent transient response 3 MHz operating frequency Uses tiny multilayer inductors and capacitors Forced PWM and auto PWM/PSM modes Out-of-phase operation for reduced input filtering 100% duty cycle low dropout mode 24 μA typical quiescent current per channel, no switching LDO key specifications Stable with 1 μF ceramic output capacitors High PSRR 60 dB up to 10 KHz Low output noise 65 μV rms output noise at VOUT3 = 3.3 V Low dropout voltage: 150 mV @ 150 mA load 11 μA typical ground current at no load APPLICATIONS
USB devices Handheld products Multivoltage power for processors, ASICS, FPGAs, and RF chipsets GENERAL DESCRIPTION
When the MODE pin is set low, the buck regulators automatically switch operating modes, depending on the load current level.
Analog Devices
