AIC1630

Features:

Adjustable Output Voltage with Two Resistor
(AIC1630A).
Power-Saving Shutdown Mode (7|A typical).
120KHz Switching Rate.
On-Chip Low Battery Detector.




Application

Palmtop & Notebook Computers.
Battery Charger Supply.
Cellular Telephone.
LCD Contrast Supply.
Flash Memory Programmer.
Battery Backup Supplies.
Portable Instruments.




Pinout






Specifications

Supply Voltage.........................................................................................7.0V
DC Voltage Applied On All Other Pins.......................................................7.0V
Operating Temperature Range................................................... -20°C~80°C
Storage Temperature Range....................................................-65°C ~150°C




Description

The AIC1630 is a DC-DC controller designed to drive an external power switch for more flexibility, especially in higher voltage and larger power applications. Typically six components are required to set up a step-up configuration easily achieving efficiency beyond 80% in AIC1630. A few more components are required to set up a step-down configuration delivering 4A load current with 83% typical efficiency, 86% at 2A load, and 300uA quiescent current.
The output voltage of AIC1630 is internally set to 3V, 3.3V, 5V or externally set to an arbitrary value below breakdown voltage of the power switch. Logic-controlled shutdown mode is provided for power saving. The low battery detector can be also configured as a linear regulator. 120KHz switching rate reduces the inductor size. Inductors of 22uH to 47uH inductance are recommended for most applications.