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L6728DTR 데이터시트(PDF) 1 Page - STMicroelectronics

부품명 L6728DTR
상세설명  Single-phase PWM controller with Power Good
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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February 2010
Doc ID 16498 Rev 1
1/33
33
L6728D
Single-phase PWM controller with Power Good
Features
Flexible power supply from 5 V to 12 V
Power conversion input as low as 1.5 V
0.8 V internal reference
0.8% output voltage accuracy
High-current integrated drivers
Power Good output
Sensorless and programmable OCP across
low-side RDS(on)
OV / UV protection
VSEN disconnection protection
Oscillator internally fixed at 300 kHz
LSLess to manage pre-bias startup
Adjustable output voltage
Disable function
Internal soft-start
DFN10 package
Applications
Memory and termination supply
Subsystem power supply (MCH, IOCH, PCI,
etc.)
CPU and DSP power supply
Distributed power supply
General DC-DC converters
Description
L6728D is a single-phase step-down controller
with integrated high-current drivers that provides
complete control logic and protection to simplify
the design of general DC-DC converters by using
a compact DFN10 package.
Device flexibility allows the management of
conversions with power input (VIN) as low as
1.5 V, and device supply voltage ranging from 5 V
to 12 V.
The L6728D provides a simple control loop with
voltage mode EA. The integrated 0.8 V reference
allows output voltages regulation with ±0.8%
accuracy over line and temperature variations.
The oscillator is internally fixed to 300 kHz.
The L6728D provides programmable dual level
overcurrent protection, as well as overvoltage and
undervoltage protection. Current information is
monitored across the low-side MOSFET RDS(on),
eliminating the need for expensive and space-
consuming sense resistors.
A PGOOD output easily provides real-time
information on output voltage status, through the
VSEN dedicated output monitor.
DFN10
Table 1.
Device summary
Order codes
Package
Packaging
L6728D
DFN10
Tube
L6728DTR
Tape and reel
www.st.com


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