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TPS51219 датащи(PDF) 1 Page - Texas Instruments

номер детали TPS51219
подробное описание детали  High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedback
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

TPS51219 датащи(HTML) 1 Page - Texas Instruments

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SW
DH
DL
V5
VREF
REFIN
GSNS
VSNS
TPS51219RTE
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VSNS
GSNS
PGOOD
V5IN
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UDG-11006
TPS51219
www.ti.com
SLUSAG1B
– MARCH 2011 – REVISED OCTOBER 2011
High Performance, Single-Synchronous Step-Down Controller
with Differential Voltage Feedback
1
FEATURES
DESCRIPTION
The TPS51219 is a small-sized single buck controller
23
Differential Voltage Feedback
with adaptive on-time control. It provides a choice of
DC Compensation for Accurate Regulation
control modes (D-CAP
™ or D-CAP2™) to meet a
Wide Input Voltage Range: 3 V to 28 V
wide range of system requirements. It is designed for
tight DC regulation requirements such as the VCCIO
Output Voltage Range: 0.5 V to 2.0 V with
application for Intel® notebooks. The performance
Fixed Options of 1.05 V and 1.00 V
and flexibility of the TPS51219 makes it suitable for
Wide Output Load Range: 0 A to 20 A+
low output voltage, high current, PC system power
Adaptive On-Time Modulation with Selectable
rails and similar point-of-load (POL) power supplies.
Control Architecture and Frequency
Differential
voltage
feedback
and
the
voltage
compensation function combine to provide high
– D-CAP™ Mode at 300 kHz/400 kHz for Fast
precision power to load devices.
Transient Response
A small package, fixed voltage options and minimal
– D-CAP2™ Mode at 500 kHz/670 kHz for
external component count saves cost and space,
Ceramic Output Capacitor
while a dedicated EN pin and pre-set frequency
4700 ppm/
°C, Low-Side RDS(on) Current Sensing
selections minimize design effort. The skip-mode at
RSENSE Accurate Current Sense Option
light load condition, strong gate drivers, and low-side
FET RDS(on) current sensing provides high efficiency
Internal, 1-ms Voltage Servo Softstart
operation over a broad load range. The external
Built-In Output Discharge
resistor
current
sense
option
enables
accurate
Power Good Output
current sensing. The conversion input voltage (the
high-side FET drain voltage) ranges from 3 V to 28 V
Integrated Boost Switch
and output voltage ranges from 0.5 V to 2.0 V. The
Built-In OVP/UVP/OCP
device requires an external 5-V supply.
Thermal Shutdown (Non-latched)
The TPS51219 is available in a 16-pin, QFN package
3 mm
× 3 mm, 16-Pin, QFN (RTE) Package
and is specified for ambient temperature from -40
°C
to 85
°C.
APPLICATIONS
Notebook Computers
I/O Supplies
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
D-CAP, D-CAP2 are trademarks of Texas Instruments.
3
Intel is a registered trademark of Intel.
PRODUCTION DATA information is current as of publication date.
Copyright
© 2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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