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TPS51275BRUKT датащи(PDF) 1 Page - Texas Instruments

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номер детали TPS51275BRUKT
подробное описание детали  Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI - Texas Instruments

TPS51275BRUKT датащи(HTML) 1 Page - Texas Instruments

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TPS51275, TPS51275B, TPS51275C
www.ti.com
SLUSB45B – JUNE 2012 – REVISED MARCH 2013
Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs
1
FEATURES
APPLICATIONS
2
Input Voltage Range: 5 V to 24 V
Notebook Computers
Output Voltages: 5 V and 3.3 V (Adjustable
Tablet Computers
Range ±10%)
DESCRIPTION
Built-in, 100-mA, 5-V and 3.3-V LDOs
The TPS51275, TPS51275B and TPS51275C are
Clock Output for Charge-Pump
cost-effective,
dual-synchronous
buck
controllers
±1% Reference Accuracy
targeted for notebook system-power supply solutions.
Adaptive On-Time D-CAP™ Mode Control
It provides 5-V and 3.3-V LDOs and requires few
external components. The 260-kHz VCLK output can
Architecture with 300-kHz and 355-kHz
be used to drive an external charge pump, generating
Frequency Setting
gate drive voltage for the load switches without
Auto-skip Light Load Operation (TPS51275,
reducing
the
main
converter
efficiency.
The
and TPS51275C)
TPS51275, TPS51275B and TPS51275C supports
OOA Light Load Operation (TPS51275B)
high efficiency, fast transient response and provides a
combined power-good signal. Adaptive on-time, D-
Internal 0.8-ms Voltage Servo Soft-Start
CAP™ control provides convenient and efficient
Low-Side RDS(on) Current Sensing Scheme
operation. The device operates with supply input
Built-In Output Discharge Function
voltage ranging from 5 V to 24 V and supports output
voltages of 5.0 V and 3.3 V. The TPS51275,
Separate Enable Input for Switchers
TPS51275B and TPS51275C are available in a 20-
Dedicated OC Setting Terminals
pin, 3 mm x 3 mm, QFN package and is specified
Power Good Indicator
from –40°C to 85°C.
OVP, UVP and OCP Protection
Non-Latch UVLO and OTP Protection
20-Pin, 3 mm x 3 mm, QFN (RUK)
NEED SOME SPACE
ORDERING INFORMATION(1)
ORDERABLE
ENABLE
OUTPUT
SKIP MODE
ALWAYS On-LDO
PACKAGE
QUANTITY
SUPPLY
DEVICE NUMBER
FUNCTION
TPS51275RUKR
Tape and Reel
3000
Auto-skip
VREG3
TPS51275RUKT
Mini reel
250
TPS51275BRUKR
Tape and Reel
3000
PLASTIC Quad
EN1 and EN2
OOA
Flat Pack
TPS51275BRUKT
Mini reel
250
VREG3 and VREG5
TPS51275CRUKR
Tape and Reel
3000
Auto-skip
TPS51275CRUKT
Mini reel
250
(1)
For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
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 is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2012–2013, 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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