AP1603
Description
The AP1603 is a high efficiency step-up DC-DC converter for applications using as few as a single Ni MH or Li-Ion battery cells. Only four external ponents are required to deliver a fixed output voltage of 3.3V. The AP1603 starts up from less than 0.9V input with 1m A load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output loading and low input voltages. The output ripple and noise are lower pared with the circuits operating in PSM mode.
Pin Assignments ( Top View )
FB 1
6 SHDN
GND 2 AP1603 5 OUT
The PFM control circuit operating in 150k Hz (max.) switching rate results in smaller passive ponents. The space saving SOT26 packages make the AP1603 an ideal choice of DC-DC converter for space conscious applications, like pagers, electronic cameras, and wireless microphones.
REF 3
74 LX
SOT26
Features
- A Guaranteed Start-Up from less than 0.9 V
- High Efficiency
- Low Quiescent Current
- Less Number of External ponents...
