ADP2140ACPZ1533R7 Description

The ADP2140ACPZ1533R7 includes a high efficiency, low quiescent 600 mA step-down dc-to-dc converter and a 300 mA LDO packaged in a small 10-lead 3 mm × 3 mm LFCSP. The total solution requires only four tiny external components. The buck regulator uses a proprietary high-speed current mode, constant frequency, and pulse-width modulation (PWM) control scheme for excellent stability and transient response. To ensure the longest battery life in portable applications, the ADP2140ACPZ1533R7 has a power-saving variable frequency mode to reduce switching frequency under light loads. 

ADP2140ACPZ1533R7 Features

Input voltage range: 2.3V to 5.5 V

LDO input (VIN2) 1.65 V to5.5V 

Buck output voltage range: 1.0V to 3.3 V

LDO output voltage range: 0.8 V to 3.3 V

Buck output current: 600 mA

LDO output current: 300 mA

LDO quiescent current: 22 μA with zero load

Buck quiescent current: 20 μA in PSM mode

Low shutdown current: <0.3 μA

Low LDO dropout 110 mV @ 300 mA load

ADP2140ACPZ1533R7 Applications

Mobile phones

Personal media players

Digital camera and audio devices

Portable and battery-powered equipment