ADP1111 Series

Micropower, Step-Up/Step-Down SW Regulator; Adjustable and Fixed 3.3 V, 5 V, 12 V

Catalog

Micropower, Step-Up/Step-Down SW Regulator; Adjustable and Fixed 3.3 V, 5 V, 12 V

Part	Package / Case	Package / Case	Package / Case	Supplier Device Package	Mounting Type	Package / Case [y]	Package / Case [x]	Voltage - Input (Max) [Max]	Voltage - Input (Min) [Min]	Current - Output	Voltage - Output (Min/Fixed)	Output Configuration	Frequency - Switching	Number of Outputs	Output Type	Function	Topology
Analog Devices ADP1111AN-3.3	0.3 in	8-DIP	7.62 mm	8-PDIP	Through Hole
Analog Devices ADP1111ARZ-12-REEL		8-SOIC		8-SOIC	Surface Mount	3.9 mm	0.154 in
Analog Devices ADP1111ANZ-3.3	0.3 in	8-DIP	7.62 mm	8-PDIP	Through Hole			30 V	2 V	400 mA	3.3 V	Positive or Negative	72 kHz	1	1.81 mOhm	Step-Down Step-Up	Boost Buck

Catalog

Micropower, Step-Up/Step-Down SW Regulator; Adjustable and Fixed 3.3 V, 5 V, 12 V

Key Features

• Operates from 2 V to 30 V Input Voltage Range

• 72 kHz Frequency Operation

• Utilizes Surface Mount Inductors

• Very Few External Components Required

• Operates in Step-Up/Step-Down or Inverting Mode

• Low Battery Detector

• User Adjustable Current Limit

• Internal 1 A Power Switch

• Fixed or Adjustable Output Voltage

• 8-Pin DIP or SO-8 Package

Description

The ADP1111 is part of a family of step-up/step-down switching regulators that operates from an input voltage supply of 2 V to 12 V in step-up mode and up to 30 V in step-down mode. The ADP1111 can be programmed to operate in step-up/stepdown or inverting applications with only 3 external components.The fixed outputs are 3.3 V, 5 V and 12 V; and an adjustable version is also available. The ADP1111 can deliver 100 mA at 5 V from a 3 V input in step-up mode, or it can deliver 200 mA at 5 V from a 12 V input in step-down mode.Maximum switch current can be programmed with a single resistor, and an open collector gain block can be arranged in multiple configuration for low battery detection, as a post linear regulator, undervoltage lockout, or as an error amplifier.APPLICATIONS3 V to 5 V, 5 V to 12 V Step-Up Converters9 V to 5 V, 12 V to 5 V Step-Down ConvertersLaptop and Palmtop ComputersCellular TelephonesFlash Memory VPP GeneratorsRemote ControlsPeripherals and Add-On CardsBattery Backup SuppliesUninterruptible SuppliesPortable Instruments