L6730_09 Datasheet, PDF (1/52 Pages) STMicroelectronics – Adjustable step-down controller with synchronous rectification

L6730
L6730B
Adjustable step-down controller with synchronous rectification
Features
■ Input voltage range from 1.8 V to 14 V
■ Supply voltage range from 4.5 V to 14 V
■ Adjustable output voltage down to 0.6 V with
±0.8% accuracy over line voltage and
temperature (0°C~125°C)
■ Fixed frequency voltage mode control
■ t_ON lower than 100 ns
■ 0% to 100% duty cycle
■ Selectable 0.6 V or 1.2 V internal voltage
reference
■ External input voltage reference
■ Soft-start and inhibit
■ High current embedded drivers
■ Predictive anti-cross conduction control
■ Selectable uvlo threshold (5 V or 12 V BUS)
■ Programmable high-side and low-side R_DS(on)
sense overcurrent protection
■ Switching frequency programmable
from 100 kHz to 1 MHz
■ Master/slave synchronization with 180° phase
shift
■ Pre-bias start up capability (L6730)
■ Selectable source/sink or source only
capability after soft-start (L6730)
■ Selectable constant current or hiccup mode
overcurrent protection after soft-start (L6730B)
■ Power Good output with programmable delay
■ Overvoltage protection with selectable
latched/not-latched mode
■ Thermal shut-down
■ Package: HTSSOP20
HTSSOP20
Applications
■ High performance / high density DC-DC
modules
■ Low voltage distributed DC-DC
■ niPOL converters
■ DDR memory supply
■ DDR memory bus termination supply
Table 1. Device summary
Order codes
Package
L6730
HTSSOP20
L6730TR
L6730B
HTSSOP20
HTSSOP20
L6730BTR
HTSSOP20
Packing
Tube
Tape and reel
Tube
Tape and reel
December 2009
Doc ID 11938 Rev 3
1/52
www.st.com
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