
October 2006
Rev 2
1/24
24
L6726A
Single phase PWM controller
Feature
■
Flexible power supply from 5V to 12V
■
Power conversion input as low as 1.5V
■
1% output voltage accuracy
■
High-current integrated drivers
■
Adjustable output voltage
■
0.8V internal reference
■
Sensorless and programmable OCP across
Low-side R
dsON
■
Oscillator internally fixed at 270kHz
■
Programmable soft-start
■
LS-LESS start up
■
Disable function
■
FB disconnection protection
■
SO-8 package
Applications
■
Subsystem power supply (MCH, IOCH, PCI...)
■
Memory and termination Supply
■
CPU & DSP power supply
■
Distributed power supply
■
General DC / DC converters
Order codes
Description
L6726A is a single-phase step-down controller
with integrated high-current drivers that provides
complete control logic, protections and reference
voltage to realize in an easy and simple way
general DC-DC converters by using a compact
SO-8 package.
Device flexibility allows managing conversions
with power input V
IN
as low as 1.5V and device
supply voltage ranging from 5V to 12V.
L6726A provides simple control loop with trans-
conductance error amplifier. The integrated 0.8V
reference allows regulating output voltage with
±1% accuracy over line and temperature
variations. Oscillator is internally fixed to 270kHz.
L6726A provides programmable over current
protection. Current information is monitored
across the Low-Side mosfet R
dsON
saving the use
of expensive and space-consuming sense
resistors.
FB disconnection protection prevents excessive
and dangerous output voltages in case of floating
FB pin.
SO-8
Part Number
Package
Packing
L6726A
SO-8
Tube
L6726ATR
SO-8
Tape & Reel
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