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L6730B Arkusz danych(PDF) 1 Page - STMicroelectronics

Numer części L6730B
Szczegółowy opis  Adjustable step-down controller with synchronous rectification
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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December 2009
Doc ID 11938 Rev 3
1/52
52
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
tON 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 RDS(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
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
Packing
L6730
HTSSOP20
Tube
L6730TR
HTSSOP20
Tape and reel
L6730B
HTSSOP20
Tube
L6730BTR
HTSSOP20
Tape and reel
HTSSOP20
www.st.com


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