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TPS43333-Q1 PDF预览

TPS43333-Q1

更新时间： 2024-09-29 12:33:35
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
42页 1765K
描述
LOW IQ, SINGLE BOOST, DUAL SYNCHRONOUS BUCK CONTROLLER

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TPS43333-Q1 数据手册

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TPS43333-Q1  
www.ti.com  
SLVSB48B –AUGUST 2012–REVISED APRIL 2013  
LOW IQ, SINGLE BOOST, DUAL SYNCHRONOUS BUCK CONTROLLER  
Check for Samples: TPS43333-Q1  
1
FEATURES  
2
•
Qualified for Automotive Applications  
Synchronization Range 150 kHz to 600 kHz  
•
AEC-Q100 Test Guidance With the Following  
Results:  
•
•
Separate Enable Inputs (ENA, ENB)  
Selectable Forced-Continuous Mode or  
–
Device Temperature Grade 1: –40°C to  
125°C Ambient Operating Temperature  
Automatic Low-Power Mode at Light Loads  
•
•
Sense Resistor or Inductor DCR Sensing  
–
–
Device HBM ESD Classification Level H2  
Device CDM ESD Classification Level C2  
Out-of-Phase Switching Between Buck  
Channels  
•
•
•
Two Synchronous Buck Controllers  
One Pre-Boost Controller  
•
•
Peak Gate-Drive Current 1.5 A  
Thermally Enhanced 38-Pin HTSSOP (DAP)  
PowerPAD™ Package  
Input Range up to 40 V, (Transients up to 60  
V), Operation Down to 2 V When Boost is  
Enabled  
APPLICATIONS  
•
Automotive Start-Stop, Infotainment,  
Navigation Instrument Cluster Systems  
•
Low-Power-Mode IQ: 30 µA (One Buck On),  
35 µA (Two Bucks On)  
•
Industrial and Automotive Multi-Rail DC Power  
Distribution Systems and Electronic Control  
Units  
•
•
•
•
Low-Shutdown Current Ish < 4 µA  
Buck Output Range 0.9 V to 11 V  
Boost Output Selectable: 7 V, 10 V, or 11 V  
Programmable Frequency and External  
DESCRIPTION  
The TPS43333-Q1 includes two current-mode synchronous buck controllers and a voltage-mode boost controller.  
The device is ideal for use as a pre-regulator stage with low Iq requirements and for applications that must  
survive supply drops due to cranking events. The integrated boost controller allows the device to operate down to  
2 V at the input without seeing a drop on the buck-regulator output stages. At light loads, one can enable the  
buck controllers to operate automatically in low-power mode, consuming just 30 µA of quiescent current.  
The buck controllers have independent soft-start capability and power-good indicators. Current foldback in the  
buck controllers and cycle-by-cycle current limitation in the boost controller provide external MOSFET protection.  
The switching frequency is programmable over 150 kHz to 600 kHz or can synchronize to an external clock in  
the same range.  
VBAT  
VBuckA  
TPS43333-Q1  
VBuckB  
2 V  
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.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2012–2013, Texas Instruments Incorporated  
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