LM2622
FEATURES
- 2 1.6A, 0.2Ω, Internal Switch
- Operating Voltage as Low as 2.0V
- 600k Hz/1.3MHz Pin Selectable Frequency
Operation
- Over Temperature Protection
- 8-Lead VSSOP Package
APPLICATIONS
- TFT Bias Supplies
- Handheld Devices
- Portable Applications
- GSM/CDMA Phones
- Digital Cameras
DESCRIPTION
The LM2622 is a step-up DC/DC converter with a 1.6A, 0.2Ω internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM2622 is an ideal part for biasing TFT displays. The LM2622 can be operated at switching frequencies of 600k Hz and 1.3MHz allowing for easy filtering and low noise. An external pensation pin gives the user flexibility in setting frequency pensation, which makes possible the use of small, low ESR ceramic capacitors at the output. The LM2622 is available in a low profile 8-lead VSSOP package.
Typical Application Circuit
2.7V
- 3.3V
L 10u H
Battery or Power Source
CIN 22UF
6 VIN
SW 7...
