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TPS43337QDAPRQ1 датащи(PDF) 1 Page - Texas Instruments

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номер детали TPS43337QDAPRQ1
подробное описание детали  LOW IQ, SINGLE-BOOST, FIXED-VOLTAGE DUAL SYNCHRONOUS BUCK CONTROLLER
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS43337QDAPRQ1 датащи(HTML) 1 Page - Texas Instruments

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TPS43337-Q1
VBuckA
VBuckB
VBAT
2 V
TPS43337-Q1
www.ti.com
SLVSBC2A – AUGUST 2013 – REVISED SEPTEMBER 2013
LOW IQ, SINGLE-BOOST, FIXED-VOLTAGE DUAL SYNCHRONOUS BUCK CONTROLLER
Check for Samples: TPS43337-Q1
1
FEATURES
Peak Gate Drive Current 1.5 A
Thermally Enhanced 38-Pin HTSSOP (DAP)
2
Qualified for Automotive Applications
PowerPAD™ Package
AEC-Q100 Qualified With the Following
Results:
APPLICATIONS
Device Temperature Grade 1: –40°C to
Automotive Start-Stop, Infotainment,
+125°C Ambient Operating Temperature
Navigation Instrument Cluster Systems
Device HBM ESD Classification Level H2
Industrial and Automotive Multi-Rail DC
Device CDM ESD Classification Level C2
Power-Distribution Systems and Electronic
Two Synchronous Buck Controllers
Control Units
BuckA: Fixed Output Voltage of 3.4 V
BuckB: Fixed Output Voltage of 1.235 V
DESCRIPTION
The
TPS43337-Q1
includes
two
current-mode
One Pre-Boost Controller
synchronous buck controllers and a voltage-mode
Input Range up to 40 V, (Transients up to 60
boost controller. The device is ideally suited as a pre-
V), Operation Down to 2 V When Boost Is
regulator stage with low IQ requirements and for
Enabled
systems that must survive supply drops due to
Low-Power Mode IQ: 34 µA (One Buck On), 43
cranking events. The integrated boost controller
µA (Two Bucks On)
allows the device to operate down to 2 V at the input
without seeing a drop on the buck regulator output
Low Shutdown Current Ish < 4 µA
stages. At light loads, the buck controllers enable to
Boost Output Selectable: 7 V, 8.85 V, or 10 V
operate automatically in low power-mode, consuming
Programmable Frequency and External
just 34 µA of quiescent current.
Synchronization Range: 150 to 600 kHz
The buck controllers have independent soft-start
Separate Enable Inputs (ENA, ENB, ENC)
capability
and
power-good
indicators.
Current
foldback in the buck controllers and cycle-by-cycle
Selectable Forced Continuous Mode or
current limitation in the boost controller provide
Automatic Low-Power Mode at Light Loads
external
MOSFET
protection.
The
switching
Sense Resistor or Inductor DCR Sensing for
frequency is programable over 150 to 600 kHz or is
Buck Controllers
synchronized to an external clock in the same range
Out-of-Phase Switching Between Buck
Channels
Figure 1. Typical Application Diagram
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
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 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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