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MFG:ADI  D/C:09  

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Part Number: ADP1111

 

MFG: ADI

 

D/C: 09

Description: The ADP1111 is part of a family of step-up/step-down switching regulators that operates from an input ...


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ADP1111 General 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/step-down 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 200mA 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. If input voltages are lower than 2 V, see the ADP1110.

ADP1111 Maximum Ratings

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36 V
SW1 Pin Voltage  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50 V
SW2 Pin Voltage  . . . . . . . . . . . . . . . . . . . . . . . .  0.5 V to VIN
Feedback Pin Voltage (ADP1111)  . . . . . . . . . . . . . . . . .   5.5 V
Switch Current  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1.5 A
Maximum Power Dissipation  . . . . . . . . . . . . . . . . . .    500 mW
Operating Temperature Range
  ADP1111A  . . . . . . . . . . . . . . . . . . . . . . . . . . .  0°C to +70°C
Storage Temperature Range  . . . . . . . . . . . . 65°C to 150°C
Lead Temperature (Soldering, 10 sec)  . . . . . . . . . . . . 300°C

ADP1111 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

ADP1111 Typical Application

3 V to 5 V, 5 V to 12 V Step-Up Converters
9 V to 5 V, 12 V to 5 V Step-Down Converters
Laptop and Palmtop Computers
Cellular Telephones
Flash Memory VPP Generators
Remote Controls
Peripherals and Add-On Cards
Battery Backup Supplies
Uninterruptible Supplies
Portable Instruments

ADP1111 Connection Diagram

ADP1111  Connection Diagram

ADP1111 datasheet

ADP1111
PDF/DataSheet Download

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