ADP5043 - Analog Devices

ADP5043 Micro PMU

The ADP5043 combines one high performance buck regulator and one low dropout (LDO) regulator in a small 20-lead LFCSP to meet demanding performance and board space requirements. The high switching frequency of the buck regulator enables use of tiny multilayer external components and minimizes board space. The MODE pin selects the buck’s mode of operation. Wh.

Features

Input voltage range: 2.3 V to 5.5 V One 800 mA buck regulator One 300 mA LDO 20-lead, 4 mm × 4 mm LFCSP package Initial regulator accuracy: ±1% Overcurrent and thermal protection Soft start Undervoltage lockout Open-drain processor reset with threshold monitoring ±1.5% threshold accuracy over the full temperate range Guaranteed reset output valid to VCC = 1 V Dual watchdog for secure systems Watchdog 1 controls reset Watchdog 2 controls reset and regulators power cycle Buck regulator key specifications Current-mode topology for excellent transient response 3 MHz operating frequency Uses tiny m.