LV5781 Datasheet Text
Ordering number : ENA0663A
LV5781
Bi-CMOS IC
3A, Point-of-load, Chopper-type Step-down Converter http://onsemi.
Overview
The LV5781 is a 1-channel chopper-type (low-side Schottky diode) step-down switching regulator. It incorporates an 80mΩ (typical) power MOSFET to achieve high-efficiency operation for 3A output currents. The output voltage is set internally to 3.3V. By adding two external resistors, it is possible to set the voltage to any desired setting above 0.85V. Inrush current at startup can be prevented by the soft start function. Using the ON/OFF pins, the converter can be set to standby mode in which the current consumption is 10μA or less. Both the load and the IC are protected by means of the overcurrent and thermal protection functions. The converter uses the HSSOP14 miniature package.
Functions
- 3A, 1-channel chopper-type, step-down switching regulator
- Output voltage: 3.3V
- Setting of any output voltage enabled (external resistors required)
- High efficiency: 90% at IOUT=1A, VO=3.3V
- Miniature package: HSSOP14
- Soft start function
- Standby mode
- Overcurrent protection
- Thermal shutdown
- Fixed frequency: 180kHz
Applications
- LCD TVs
- Game machines
Semiconductor ponents Industries, LLC, 2013 August, 2013
13107 MS IM 20070112-S00004...
