DatasheetsPDF.com

L7980

STMicroelectronics
Part Number L7980
Manufacturer STMicroelectronics
Description 2A step-down switching regulator
Published Jan 12, 2015
Detailed Description L7980 2 A step-down switching regulator Features ■ 2 A DC output current ■ 4.5 V to 28 V input voltage ■ Output voltage...
Datasheet PDF File L7980 PDF File

L7980
L7980

Overview
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 exposed pad Description The L7980 is a step down switching regulator with 2.
5 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 2 A current to the load depending on the application conditions.
The input voltage can range from 4.
5 V to 28 V, while the output voltage can be set starting from 0.
6 V to VIN.
Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
The QFN and the HSOP packages with exposed pad allow reducing the RthJA down to 60 °C/W and 40 °C/W respectively.
December 2010 Doc ID 15181 Rev 4 1/44 www.
st.
com 44 Contents Contents L7980 1 Pin settings .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
4 1.
1 Pin connection .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
4 1.
2 Pin description .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
4 2 Maximum ratings .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
5 3 Thermal data .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
5 4 Electrical characteristics .
.
.
.
.
.
.
.
...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)