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TPS43331-Q1 PDF预览

TPS43331-Q1

更新时间： 2024-02-02 08:11:05
品牌 Logo 应用领域
德州仪器 - TI 转换器稳压器
页数 文件大小 规格书
50页 2416K
描述
DUAL SWITCHER AND LINEAR REGULATORS

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TPS43331-Q1 数据手册

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TPS43331-Q1  
www.ti.com  
SLVSA38 –DECEMBER 2009  
DUAL SWITCHER AND LINEAR REGULATORS  
Check for Samples: TPS43331-Q1  
1
FEATURES  
•
Input Operating Range 5 V to 30 V (VBAT),  
With Transients Up to 40 V  
•
•
Enable Feature, Controls VBUCK 1  
Programmable Power Good Delay Time  
•
Two, Adjustable Output Voltage, Step-Down  
Switching Voltage Regulators  
(PGDLY) for VSTBY  
•
Current-Limit and Independent Thermal  
Detection and Shutdown Protection on All  
Regulators and High-Side Driver Output  
•
•
•
External Clock Input  
Soft-Start Control for Step-Down Regulators  
•
•
Operating Junction Temperature Range: -40°C  
to 150°C  
Programmable, Linear Regulator (VSTBY), Low  
Quiescent Current (65uA typ.)  
Thermally Enhanced 38-Pin DAP PowerPAD™  
Package  
•
•
•
•
Programmable, Linear Regulator (VLR)  
Overvoltage Detection and Shutdown  
Protected, High-Side Drive Ouput (HSD)  
APPLICATIONS  
Power-On Reset for Standby Regulator  
(VSTBY)  
•
•
Qualified for Automotive Applications  
Power Supply for Microcontrollers and DSPs  
•
•
Serial Communication, I2C Interface  
Low Voltage Warning Detection With  
Programmable Input Threshold (LVWIN,  
VBATW)  
DESCRIPTION  
The TPS43331 is a multi-rail output voltage regulator, with two synchronous switch mode controllers and two  
linear regulators. In addition, there is a reverse protected high side switch and voltage supervisor for monitoring  
the standby regulator and input voltage. The regulator outputs and high side switch are controlled either by  
discrete inputs for certain outputs and serial interface using the I2C configuration for outputs not controlled by  
discrete inputs.  
The standby linear regulator (VSTBY) is high voltage tolerant and can be connected directly to the vehicle  
battery, the quiescent current is typically 65 µA to maintain a regulated output with light loads.  
SIMPLIFIED SCHEMATIC  
EFFICIENCY vs LOAD CURRENT (VOUT = 5 V)  
100  
PGDLY  
CSLEW  
VCP  
CBS1  
VGT1  
VBUCK 1  
PH1  
90  
80  
70  
60  
VGB1  
VBAT*  
VBATP  
LVWIN  
CBS2  
VGT2  
PH2  
Vsupply  
VBUCK 2  
TPS43331  
VINSB  
VBAT  
VGB2  
VSTBY  
VSTBY  
VLREG  
HSD  
50  
EN  
I2CID  
7Vin  
VLR  
HSD  
SDA  
40  
12Vin  
SCL  
SYNCH  
18Vin  
30  
RST*  
AGnd  
24Vin  
fSW = 185 kHz  
20  
0
0.5  
1
1.5  
2
2.5  
Load Current (A)  
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.  
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 © 2009, Texas Instruments Incorporated  
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TPS43331-Q1 替代型号

型号 品牌 替代类型 描述 数据表
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