AIC1633

Features:

High Efficiency Up To 87%.
Adjustable Output Voltage with Two Resistors (AIC1633A)
Power-Saving Shutdown Mode (7uA typical).
Internal 0.8A Switch.
120KHz Switching Rate.
Adjustable Switch Current Limit.
On-Chip Low Battery Detector.




Application

Pocket Organizers.
Electronic Dictionaries.
Cameras.
Pagers.
Bar-Code Scanners.
LCD Displays.
Battery Backup Supplies.
Portable Instruments




Pinout






Specifications

Supply Voltage.............................................................................................. 7.0V
Operating Temperature Range....................................................... -20°C ~ 80°C
Storage Temperature Range .........................................................-65°C ~ 150°C




Description

The AIC1633 is a high efficiency step up DC/DC converter. Only four external components are required to deliver a fixed voltage of 3V, 3.3V, or 5V. The output voltage can be externally set to an arbitrary value below breakdown voltage of the power switch for AIC1633A. Efficiency beyond 83% can be easily achieved at 70mA load with 2.2V to 3V input voltages.

Logic-controlled shutdown mode of AIC1633 is provided for power saving. Switch current limit can be programmed with a resistor. The low battery detector can be configured as a linear converter or a burst mode controller performing an extremely low supply current operation.

120KHz switching rate reduces the inductor size of AIC1633. Inductors of 47uH to 150uH inductance are recommended for most applications.