The ADP1109A is a versatile step-up switching regulator. The device requires only minimal external components to operate as a complete switching regulator. The ADP1109A-5 can deliver 100 mA at 5 V from a 3 V input and the ADP1109A-12 can deliver 60 mA at 12 V from a 5 V input. The device also features a logic controlled shutdown capability that, when a logic low is applied, will shut down the oscillator. The 120 kHz operating frequency allows for the use of small surface mount components. The gated oscillator capability eliminates the need for frequency compensation.
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Cellular TelephonesSingle-Cell to 5 V ConvertersLaptop and Palmtop ComputersPagersCamerasBattery Backup SuppliesPortable InstrumentsLaser Diode DriversHand-Held Inventory Computers
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Operates at Supply Voltages 2 V to 9 VFixed 3.3 V, 5 V, 12 V and Adjustable OutputMinimum External Components RequiredGround Current: 460 mAOscillator Frequency: 120 kHzLogic Shutdown8-Lead DIP and SO-8 Packages
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Supply Voltage, VOUT . . . . . . . . . . . . . . . . . . . . 0.4 V to 20 V
SW Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . 0.4 V to 50 V
Shutdown Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 6.0 V
Switch Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 A
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . 300 mW
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 
