The ADP1173 is part of a family of step-up/step-down switching regulators that operates from an input supply voltage of as little as 2 V to 12 V in step-up mode and to 30 V in step-down mode. The ADP1173 consumes as little as 110 µA in standby mode, making it ideal for applications that need low quiescent current. An auxiliary gain amplifier can serve as a low battery detector, linear regulator (under voltage lockout) or error amplifier. The ADP1173 can deliver 80 mA at 5 V from a 3 V input in step-up configuration or 100 mA at 5 V from a 12 V input in step-down configuration. For input voltages of less than 2 V use the ADP1073.
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Notebook and Palmtop ComputersCellular TelephonesFlash Memory Vpp Generators3 V to 5 V, 5 V to 12 V Converters9 V to 5 V, 12 V to 5 V ConvertersPortable InstrumentsLCD Bias Generators
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Operates From 2.0 V to 30 V Input VoltagesOnly 110 mA Supply Current (Typical)Step-Up or Step-Down Mode OperationVery Few External Components RequiredLow Battery Detector On-ChipUser-Adjustable Current LimitInternal 1 A Power SwitchFixed or Adjustable Output Voltage Versions8-Pin DIP or SO-8 Package
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Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . .. 36 V
SW1 Pin Voltage (VSW1) . . . . . . . . . . . . . . . . . . . . . . . .. 50 V
SW2 Pin Voltage (VSW2) . . . . . . . . . . . . . . . . . .0.5 V to VIN
Feedback Pin Voltage (ADP1173) . . . . . . . . . . . . . . . . . . . 5 V
Sense Pin Voltage (ADP1173, 3.3, 5, 12) . . . . . . . . . 36 V
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . 500 mW
Maximum Switch Current . . . . . . . . . . . . . . . . . . . . . . . .1.5 A
Operating Temperature Range . . . . . . . . . . . . 0°C to +70°C
Storage Temperature Range . . . . . . . . . . . . 65°C to 150°C
Lead Temperature, (Soldering, 10 sec) . . . . . . . . . . .+300°C
Post a Buying Lead
Required Field 
