L6730 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 1.8V to 14V
■ Supply voltage range from 4.5V to 14V
■ Adjustable output voltage down to 0.6V with
±0.8% accuracy over line voltage and
temperature (0°C~125°C)
■ Fixed frequency voltage mode control
■ t_ON lower than 100ns
■ 0% to 100% duty cycle
■ Selectable 0.6V or 1.2V internal voltage
reference
■ External input voltage reference
■ Soft-start and inhibit
■ High current embedded drivers
■ Predictive anti-crossconduction control
■ Selectable uvlo threshold (5V or 12V BUS)
■ Programmable high-side and low-side R_DS(on)
sense over-current-protection
■ Switching frequency programmable from
100kHz to 1MHz
■ 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)
HTSSOP20
■ Power good output with programmable delay
■ Over voltage protection with selectable
latched/not-latched mode
■ Thermal shut-down
■ Package: HTSSOP20
Applications
■ High performance / high density DC-DC
modules
■ Low voltage distributed DC-DC
■ niPOL converters
■ DDR memory supply
■ DDR memory bus termination supply
Order Codes
Part number
L6730
L6730TR
L6730B
L6730BTR
June 2006
Package
HTSSOP20
HTSSOP20
HTSSOP20
HTSSOP20
Rev 2
Packing
Tube
Tape & Reel
Tube
Tape & Reel
1/52
www.st.com
52