ADP5040 - Analog Devices

ADP5040 Micro PMU

The ADP5040 combines one high performance buck regulator and two low dropout regulators (LDO) in a small 20-lead LFCSP to meet demanding performance and board space requirements. The high switching frequency of the buck regulator enables the use of tiny multilayer external components and minimizes board space. When the MODE pin is set to logic high, the buck.

Features

Input voltage range: 2.3 V to 5.5 V One 1.2 A buck regulator Two 300 mA LDOs 20-lead, 4 mm × 4 mm LFCSP package Overcurrent and thermal protection Soft start Undervoltage lockout Buck key specifications Output voltage range: 0.8 V to 3.8 V Current mode topology for excellent transient response 3 MHz operating frequency Peak efficiency up to 96% Uses tiny multilayer inductors and capacitors Mode pin selects forced PWM or auto PWM/PSM modes 100% duty cycle low dropout mode LDOs key specifications Output voltage range: 0.8 V to 5.2 V Low VIN from 1.7 V to 5.5 V Stable with 2.2 μF ceramic output c.