Data Sheet
Dual 3 MHz, 800 mA Buck Regulators with One 300 mA LDO
ADP5023
FEATURES
Main input voltage range: 2.3 V to ...
Data Sheet
Dual 3 MHz, 800 mA Buck Regulators with One 300 mA LDO
ADP5023
FEATURES
Main input
voltage range: 2.3 V to 5.5 V Two 800 mA buck regulators and one 300 mA LDO 24-lead, 4 mm × 4 mm LFCSP package Regulator accuracy: ±1.8% Factory programmable or external adjustable 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 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
APPLICATIONS
Power for processors, ASIC, FPGAs, and RF chipsets Portable instrumentation and medical devices Space constrained devices
GENERAL DESCRIPTION
The ADP5023 combines two high performance buck regulators 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 predefined threshold, the regulator operates in power save mode (PSM) improving the light-load efficiency.
Table 1. Family Models
Model
Channels
ADP5023 2 buck, 1 LDO
ADP5024 2 buck, 1 LDO ADP5034 2 buck, 2 LDOs
ADP5037 2 buck, 2 LDOs
ADP5033
ADP5040 AD...