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ADP5033

Analog Devices
Part Number ADP5033
Manufacturer Analog Devices
Description 800mA Buck Regulators
Published Jul 6, 2011
Detailed Description Data Sheet Dual 3 MHz, 800 mA Buck Regulators with Two 300 mA LDOs ADP5033 FEATURES Main input voltage range: 2.3 V to...
Datasheet PDF File ADP5033 PDF File

ADP5033
ADP5033

Overview
Data Sheet Dual 3 MHz, 800 mA Buck Regulators with Two 300 mA LDOs ADP5033 FEATURES Main input voltage range: 2.
3 V to 5.
5 V Two 800 mA buck regulators and two 300 mA LDOs Tiny, 16-ball, 2 mm × 2 mm WLCSP package Regulator accuracy: ±1.
8% Factory programmable VOUTx 3 MHz buck operation with forced PWM and auto PWM/PSM modes BUCK1/BUCK2: output voltage range from 0.
8 V to 3.
8 V LDO1/LDO2: output voltage range from 0.
8 V to 5.
2 V LDO1/LDO2: low input supply voltage from 1.
7 V to 5.
5 V LDO1/LDO2: high PSRR and low output noise APPLICATIONS Power for processors, ASICS, FPGAs, and RF chipsets Portable instrumentation and medical devices Space constrained devices GENERAL DESCRIPTION The ADP5033 combines two high performance buck regulators and two low dropout regulators (LDO) in a tiny, 16-ball, 2 mm × 2 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.
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 operate in PWM mode when the load current is above a predefined threshold.
When the load current falls below a predefined threshold, the regulator operates 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 range of the ADP5033 LDO extend the battery life of portable devices.
The ADP5033 LDOs maintain power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.
ACTIV.
AND UVLO 09788-001 TYPICAL APPLICATION CIRCUIT ADP5033 2.
3V TO 5.
5V VIN1 C1 4.
7µF ON OFF ENA ENB VIN2 C2 4.
7µF BUCK1 EN1 MODE EN2 EN3 EN4 MODE BUCK2 EN2 SW1 L1 1µH VOUT1 PGND1 VOUT1 @ 800mA C5 10µF MODE PWM PSM/PWM L2 1µH SW2 VOUT2 PGND2 VOUT2 @ ...


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