DatasheetsPDF.com

ADP1110

Analog Devices
Part Number ADP1110
Manufacturer Analog Devices
Description Micropower/ Step-Up/Step-Down Switching Regulator
Published Mar 23, 2005
Detailed Description a Micropower, Step-Up/Step-Down Switching Regulator; Adjustable and Fixed 3.3 V, 5 V, 12 V ADP1110 FUNCTIONAL BLOCK DIA...
Datasheet PDF File ADP1110 PDF File

ADP1110
ADP1110

Overview
a Micropower, Step-Up/Step-Down Switching Regulator; Adjustable and Fixed 3.
3 V, 5 V, 12 V ADP1110 FUNCTIONAL BLOCK DIAGRAMS SET FEATURES Operates at Supply Voltages From 1.
0 V to 30 V Step-Up or Step-Down Mode Minimal External Components Required Low-Battery Detector User-Adjustable Current Limiting Fixed or Adjustable Output Voltage Versions 8-Pin DIP or SO-8 Package APPLICATIONS Cellular Telephones Single-Cell to 5 V Converters Laptop and Palmtop Computers Pagers Cameras Battery Backup Supplies Portable Instruments Laser Diode Drivers Hand-Held Inventory Computers ADP1110 A2 VIN GAIN BLOCK/ ERROR AMP ILIM SW1 220mV REFERENCE A0 A1 OSCILLATOR DRIVER Q1 COMPARATOR R1 R2 300kΩ GND SENSE SW2 ADP1110 Block Diagram—Fixed Output Version SET ADP1110 A2 VIN GAIN BLOCK/ ERROR AMP A0 ILIM SW1 220mV REFERENCE OSCILLATOR DRIVER GENERAL DESCRIPTION The ADP1110 is part of a family of step-up/step-down switching regulators that operate from an input voltage supply as little as 1.
0 V.
This very low input voltage allows the ADP1110 to be used in applications that use a single cell as the primary power source.
The ADP1110 can be configured to operate in either step-up or step-down mode, but for input voltages greater than 3 V, the ADP1111 would be a more effective solution.
An auxiliary gain amplifier can serve as a low battery detector or as a linear regulator.
The quiescent current of 300 µA makes the ADP1110 useful in remote or battery powered applications.
A1 Q1 COMPARATOR GND FB SW2 ADP1110 Block Diagram—Adjustable Output Version The 70 kHz frequency operation also allows for the use of surface-mount external capacitors and inductors.
Battery protection circuitry limits the effect of reverse current to safe levels at reverse voltages up to 1.
6 V.
REV.
0 Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights o...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)