Description
www.DataSheet4U.com www.fairchildsemi.com ILC6390/91 SOT-89 Step-Up PFM Switcher with Auto-Load Sense .
50 mA boost converter using Pulse Frequency Modulation, or PFM, technique, in 5-lead SOT-89 or a 5-lead SOT-23 package.
Features
* 85% conversion efficiency at 50mA out Start-up voltages as low as 900mV ±2.5% accurate outputs Complete switch design with only 3 external components Automatically senses load variations to select the optimal duty cycle and extend conversion efficien
Applications
* In addition, the ILC6391 is configured to drive an external transistor to achieve higher power levels. Applications
* Cellular phones, pagers
* Cameras, video recorders
* Palmtops and PDAs
Typical Applications
Figures 1 & 2
SD
3 1
CE V
3 2 1
OUT
L: 100µH (SUMIDA, CD-54)
