Main input voltage range: 2.3 V to 5.5 V
Two 1200 mA buck regulators and one 300 mA LDO
24-lead, 4 mm × 4 mm LFCSP package
Regulator accuracy: ±3%
Factory programmable or external adjustable VOUTx
3 MHz buck operation with forced PWM and automatic
BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V
LDO: output voltage range from 0.8 V to 5.2 V
LDO: input supply voltage from 1.7 V to 5.5 V
LDO: high PSRR and low output noise
Power for processors, ASICS, FPGAs, and RF chipsets
Portable instrumentation and medical devices
Space constrained devices
Dual 3 MHz, 1200 mA Buck
Regulators with One 300 mA LDO
The ADP5024 combines two high performance buck regula-
tors and one low dropout (LDO) regulator in a small, 24-lead,
4 mm × 4 mm LFCSP 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 pre-
defined 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. The low quiescent current, low dropout voltage, and
wide input voltage range of the LDO extends the battery life of
portable devices. The ADP5024 LDO maintains power supply
rejection greater than 60 dB for frequencies as high as 10 kHz
while operating with a low headroom voltage.
Regulators in the ADP5024 are activated though dedicated
enable pins. The default output voltages can be either externally
http://www.DataSheet4U.net/ set in the adjustable version or factory programmable to a wide
range of preset values in the fixed voltage version.
TYPICAL APPLICATION CIRCUIT
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datasheet pdf - http://www.DataSheet4U.net/