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ADP2105 - Step-Down DC-to-DC Converter

General Description

The ADP2105/ADP2106/ADP2107 are low quiescent current, synchronous, step-down dc-to-dc converters in a compact 4 mm × 4 mm LFCSP package.

Key Features

  • Extremely high 97% efficiency Ultralow quiescent current: 20 μA 1.2 MHz switching frequency 0.1 μA shutdown supply current Maximum load current ADP2105: 1 A ADP2106: 1.5 A ADP2107: 2 A Input voltage: 2.7 V to 5.5 V Output voltage: 0.8 V to VIN Maximum duty cycle: 100% Smoothly transitions into low dropout (LDO) mode Internal synchronous rectifier Small 16-lead 4 mm × 4 mm LFCSP package Optimized for small ceramic output capacitors Enable/shutdown logic input Undervoltage lockout Soft start Suppo.

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Other Datasheets by Analog Devices

Part Number Description
ADP2102 Synchronous Step-Down DC-DC Converter
ADP2106 Step-Down DC-to-DC Converter
ADP2107 Step-Down DC-to-DC Converter
ADP2108 Step-Down DC-to-DC Converter
ADP2109 Step-Down Converter

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 FEATURES Extremely high 97% efficiency Ultralow quiescent current: 20 μA 1.2 MHz switching frequency 0.1 μA shutdown supply current Maximum load current ADP2105: 1 A ADP2106: 1.5 A ADP2107: 2 A Input voltage: 2.7 V to 5.5 V Output voltage: 0.8 V to VIN Maximum duty cycle: 100% Smoothly transitions into low dropout (LDO) mode Internal synchronous rectifier Small 16-lead 4 mm × 4 mm LFCSP package Optimized for small ceramic output capacitors Enable/shutdown logic input Undervoltage lockout Soft start Supported by ADIsimPower™ design tool APPLICATIONS Mobile handsets PDAs and palmtop computers Telecommunication/networking equipment Set top boxes Audio/video consumer electronics TYPICAL OPERATING CIRCUIT 0.1μF 10Ω VIN INPUT VOLTAGE = 2.7V TO 5.