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ADP2140 - Low Quiescent Current Buck

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.

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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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Data Sheet 3 MHz, 600 mA, Low Quiescent Current Buck with 300 mA LDO Regulator ADP2140 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: <0.3 μA Low LDO dropout 110 mV @ 300 mA load High LDO PSRR 65 dB @ 10 kHz at VOUT2 = 1.2 V 55 dB @ 100 kHz at VOUT2 = 1.2 V Low noise LDO: 40 μV rms at VOUT2 = 1.2 V Initial accuracy: ±1% Current-limit and thermal overload protection Power-good indicator Optional enable sequencing 10-lead 0.