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TPS5625PWPR PDF预览

TPS5625PWPR

更新时间: 2024-11-23 22:49:39
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
26页 388K
描述
SYNCHRONOUS-BUCK HYSTERETIC REGULATOR CONTROLLER

TPS5625PWPR 数据手册

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TPS5615, TPS5618, TPS5625, TPS5633  
SYNCHRONOUS-BUCK HYSTERETIC REGULATOR CONTROLLER  
SLVS177B – SEPTEMBER 1998 – REVISED JULY 2000  
PWP PACKAGE  
(TOP VIEW)  
±1% Reference Over Full Operating  
Temperature Range  
Synchronous Rectifier Driver for >90%  
Efficiency  
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
IOUT  
AGND2  
OCP  
VHYST  
VREFB  
VSENSE  
ANAGND  
SLOWST  
BIAS  
LODRV  
LOHIB  
DRVGND  
LOWDR  
DRV  
PWRGD  
NC  
NC  
NC  
NC  
2
3
Fixed Output Voltage Options of 1.5 V,  
1.8 V, 2.5 V, and 3.3 V  
4
5
User-Selectable Hysteretic-Type Control  
Low Supply Current . . . 3 mA Typ  
6
NC  
7
INHIBIT  
IOUTLO  
LOSENSE  
HISENSE  
BOOTLO  
HIGHDR  
BOOT  
8
11.4-V to 13-V Input Voltage Range, V  
Power Good Output  
CC  
9
10  
11  
12  
13  
14  
Programmable Soft-Start  
Overvoltage/Overcurrent Protection  
Active Deadtime Control  
V
CC  
description  
NC – No internal connection  
The TPS5615 family of synchronous-buck regulator controllers provides an accurate supply voltage to DSPs.  
The output voltage is internally set by a resistive divider with an accuracy of 1% over the full operating  
temperature range. A hysteretic controller with user-selectable hysteresis 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. PWRGD monitors the output voltage and pulls the  
open-collectoroutputlowwhentheoutputdropsbelow93%ofthenominaloutputvoltage. Anovervoltagecircuit  
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 that the 12-V supply voltage and system  
supply voltage (5 V or 3.3 V) are within proper operating limits before the controller starts. The output driver  
circuits include 2-A drivers with internal 8-V gate-voltage regulators that can easily provide sufficient power for  
today’s high-powered DSPs. The high-side driver can be configured either as a ground-referenced driver or as  
afloatingbootstrapdriver. TheTPS5615familyisavailableina28-pinTSSOPPowerPad package. Itoperates  
over a junction temperature range of 0°C to 125°C.  
AVAILABLE OPTIONS  
PACKAGE  
T
J
OUTPUT VOLTAGE  
TSSOP  
(PWP)  
1.5 V  
1.8 V  
2.5 V  
3.3 V  
TPS5615PWP  
TPS5618PWP  
TPS5625PWP  
TPS5633PWP  
0°C to 125°C  
The PWP package is availble taped and reeled. Add R suffix to  
device type (e.g., TPS5615PWPR).  
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.  
PowerPAD is a trademark of Texas Instruments Incorporated.  
Copyright 2000, 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  

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