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ADP5022

Analog Devices
Part Number ADP5022
Manufacturer Analog Devices
Description 600mA Buck Regulator
Published May 14, 2010
Detailed Description Dual 3 MHz, 600 mA Buck Regulator with 150 mA LDO ADP5022 FEATURES Input voltage range: 2.4 V to 5.5 V Tiny 16-ball, 2 ...
Datasheet PDF File ADP5022 PDF File

ADP5022
ADP5022


Overview
Dual 3 MHz, 600 mA Buck Regulator with 150 mA LDO ADP5022 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 The ADP5022 is a micro power management unit (micro PMU) that combines two high performance buck regulators and a low dropout regulator (LDO) in a tiny 16-ball 2.
08 mm × 2.
08 mm WLCSP to meet demanding performance and board space requirements.
The high switching frequency of the buck regulators enables tiny multilayer external components and minimizes the board space required.
When the MODE pin is set high, the buck regulators operate in forced PWM mode.
When the MODE pin is set low, the buck regulators automatically switch operating modes, depending on the load current level.
At higher output loads, the buck regulators operate in PWM mode.
When the load current falls below a predefined threshold, the regulators operate in power save mode (PSM), improving the light-load efficiency.
The two bucks operate out-of-phase to reduce the input capacitor requirement and noise.
The low quiescent current, low dropout voltage, and wide input voltage ...


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