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
S...