ADP5023

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...