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ADP2140 - Low Quiescent Current Buck

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General Description

The ADP2140 includes a high efficiency, low quiescent 600 mA stepdown 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 currentmode, constant frequency, pulse-width modulation (PWM) control scheme for excellent stability and transient response.

Overview

Data Sheet 3 MHz, 600 mA, Low Quiescent Current Buck with 300 mA LDO Regulator.

Key Features

  • Input voltage range: 2.3 V to 5.5 V LDO input (VIN2) 1.65 V to 5.5 V Buck output voltage range: 1.0 V 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:.

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