L7980
2 A step-down switching regulator
Features
■ 2 A DC output current ■ 4.
5 V to 28 V input
voltage ■ Output
voltage adjustable from 0.
6 V ■ 250 kHz switching frequency, programmable
up to 1 MHz ■ Internal soft-start and enable ■ Low dropout operation: 100% duty cycle ■
Voltage feed-forward ■ Zero load current operation ■ Overcurrent and thermal protection ■ VFQFPN3x3-8L and HSOP8 package
Applications
■ Consumer: STB, DVD, DVD recorder, car audio, LCD TV and monitors
■ Industrial: PLD, PLA, FPGA, chargers
■ Networking: XDSL, modems, DC-DC modules ■ Computer:
Optical storage, Hard disk drive, Printers, Audio/graphic cards ■ LED driving
Figure 1.
Application circuit
VFQFPN8 3x3
HSOP8 exp...