Analog Devices Micropower, Step-Up/Step-Down SW Regulator Fixed 12V
Analog Devices Micropower, Step-Up/Step-Down SW Regulator Fixed 12V
Manufactured by Analog Devices - DIP8 Package - Part # ADP1111-A12
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 Output Voltage
- 8-Pin DIP
APPLICATIONS
Laptop and Palmtop Computers
Cellular Telephones
Flash Memory VPP Generators
Remote Controls
Peripherals and Add-On Cards
Battery Backup Supplies
Uninterruptible Supplies
Portable Instruments
GENERAL DESCRIPTION
The ADP1111 is part of a family of step-up/step-down switching regulators that operates from an input voltage supply of 2V 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 5V from a 12V 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.