L7986TA Datasheet, PDF (1/43 Pages) STMicroelectronics – 3 A step-down switching regulator

L7986TA
3 A step-down switching regulator
Features
■ 3 A DC output current
■ 4.5 V to 38 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
■ HSOP8 package
■ Guarantee overtemperature range (-40 °C to
125 °C)
Applications
■ Automotive:
– Car audio, car infotainment
■ Industrial:
– PLD, PLA, FPGA, chargers
■ Networking: XDSL, modems, DC-DC modules
■ Computer:
– Optical storage, hard disk drive, printers
■ LED driving
Datasheet − production data
HSOP8 exposed pad
Description
The L7986TA is a step-down switching regulator
with 3.7 A (min.) current limited embedded power
MOSFET, so it is able to deliver up to 3 A current
to the load depending on the application
conditions.
The input voltage can range from 4.5 V to 38 V,
while the output voltage can be set starting from
0.6 V to V_IN.
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 HSOP package with exposed pad allows the
reduction of R_thJA down to 40 °C/W.
October 2012
This is information on a product in full production.
Doc ID 022098 Rev 3
1/43
www.st.com
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