AiT Semiconductor A7801A
The A7801A is a low noise, constant frequency (300kHz) switched capacitor voltage doubler. It produce a regulated output voltage from a 2.5V to 5.0V input with up to 300mA of output current. The A7801A have thermal shutdown capability and can survive a continuous short circuit from VOUT to GND.| Part No. | A7801A |
|---|---|
| Datasheet | A7801A Download |
| Manufacturer |  AiT Semiconductor |
| Description | DC-DC CONVERTER |
| Buy | Stock & Price |
DESCRIPTION
FEATURES
Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the A7801A ideally suited for small, battery-powered applications. A new charge-pump architecture maintains constant switching frequency to zero load and reduces both output and input ripple. Built-in soft-start circuitry prevents excessive inrush current during start-up. High switching frequency enables the use of small ceramic capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to <1uA.● Fixed 5V ± 2.5% Output
● VIN Range: 2.5V to 5.0V
● Output Current: Up to 300mA
● Constant Frequency Operation at All Loads
● Low Noise Constant Frequency (300kHz) Operation
● Automatic Soft-Start Reduces Inrush Current
● Shutdown Current <1uA
● Short-Circuit Protection
● No Inductors
● Available in SOT-26 package APPLICATION
● White LED Backlighting
● Li-Ion Battery Backup Supplies
● Local 3V to 5V Conversion
● Smart Card Readers
● PCMCIA Local 5V Supplies TYPICAL APPLICATION The A7801A is available in SOT-26 package.
