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TPS5211PWPR PDF预览

TPS5211PWPR

更新时间： 2024-11-25 23:37:19
品牌 Logo 应用领域
其他 - ETC 模拟IC开关光电二极管
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32页 560K
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Analog IC

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TPS5211PWPR 数据手册

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TPS5211  
HIGH FREQUENCY PROGRAMMABLE HYSTERETIC  
REGULATOR CONTROLLER  
SLVS243 – SEPTEMBER 1999  
PWP PACKAGE  
(TOP VIEW)  
700 KHz Operation  
1.25 MHz Operation With External Driver  
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
1.5% Reference Over Full Operating  
Temperature Range  
IOUT  
DROOP  
OCP  
VHYST  
VREFB  
VSENSE  
ANAGND  
SLOWST  
BIAS  
LODRV  
LOHIB  
DRVGND  
LOWDR  
DRV  
PWRGD  
VID0  
VID1  
VID2  
VID3  
2
3
Synchronous Rectifier Driver for Greater  
Than 90% Efficiency  
4
5
Programmable Reference Voltage Range of  
1.3 V to 3.5 V  
6
VID4  
7
INHIBIT  
IOUTLO  
LOSENSE  
HISENSE  
BOOTLO  
HIGHDR  
BOOT  
8
User–Selectable Hysteretic Type Control  
9
Droop Compensation for Improved Load  
Transient Regulation  
10  
11  
12  
13  
14  
Adjustable Overcurrent Protection  
Programmable Softstart  
V
CC  
Overvoltage Protection  
Active Deadtime Control  
Power Good Output  
Internal Bootstrap Schottky Diode  
Low Supply Current . . . 3-mA Typ  
Reduced System Component Count and  
Size  
description  
The TPS5211 is a hysteretic regulator controller which provides an accurate, programmable supply voltage to  
microprocessors. An internal 5-bit DAC is used to program the reference voltage to within a range of 1.3 V to  
3.5 V. The output voltage can be set to equal the reference voltage or some multiple of the reference voltage.  
A hysteretic controller with user-selectable hysteresis and programmable droop compensation is used to  
dramatically reduce overshoot and undershoot caused by load transients. Propagation delay from the  
comparator inputs to the output drivers is less than 250 ns. Overcurrent shutdown and crossover protection for  
the output drivers combine to eliminate destructive faults in the output FETs. The softstart current source is  
proportional to the reference voltage, thereby eliminating variation of the softstart timing when changes are  
made to the output voltage. PWRGD monitors the output voltage and pulls the open-collector output low when  
the output drops 7% below the nominal output voltage. An overvoltage circuit disables the output drivers if the  
output voltage rises 15% above the nominal value. The inhibit pin can be used to control power sequencing.  
Inhibit and undervoltage lockout assures the 12-V supply voltage and system supply voltage (5 V or 3.3 V) is  
within proper operating limits before the controller starts. Single-supply (12 V) operation is easily accomplished  
using a low-current divider for the required 5-V signals. The output driver circuits include 2-A drivers with internal  
8-V gate-voltage regulators. The high-side driver can be configured either as a ground-referenced driver or as  
a floating bootstrap driver. The TPS5211 is available in a 28-pin TSSOP PowerPAD package. It operates over  
a junction temperature range of 0°C to 125°C.  
AVAILABLE OPTIONS  
PACKAGE  
T
J
TSSOP  
(PWP)  
0°C to 125°C  
TPS5211PWPR  
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.  
Copyright 1999, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
Powered by ICminer.com Electronic-Library Service CopyRight 2003  
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