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TPS51217DSCT

更新时间： 2024-11-23 05:52:07
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
27页 986K
描述
HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY

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TPS51217DSCT 数据手册

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TPS51217  
www.ti.com ...................................................................................................................................................................................................... SLUS947–JUNE 2009  
HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN  
CONTROLLER FOR NOTEBOOK POWER SUPPLY  
1
FEATURES  
APPLICATIONS  
•
•
•
Notebook Computers  
I/O Supplies  
System Power Supplies  
2
•
Wide Input Voltage Range: 3 V to 28 V  
Output Voltage Range: 0.6 V to 2.6 V  
Wide Output Load Range: 0 to 20A+  
Built-in 0.5% 0.6 V Reference  
•
•
•
•
DESCRIPTION  
D-CAP™ Mode with 100-ns Load Step  
Response  
The TPS51217 is a small-sized single buck controller  
with adaptive on-time D-CAP™ mode. The device is  
suitable for low output voltage, high current, PC  
system power rail and similar point-of-load (POL)  
power supply in digital consumer products. A small  
package with minimal pin-count saves space on the  
PCB, while a dedicated EN pin and pre-set frequency  
minimize design effort required for new designs. The  
skip-mode at light load condition, strong gate drivers  
and low-side FET RDS(on) current sensing supports  
low-loss and high efficiency, over a broad load range.  
The TRAN pin provides freedom of masking  
overvoltage protection, undervoltage protection and  
power-good signal during the transition period of  
dynamic output voltage change for modern GPU  
power supply applications. The conversion input  
voltage which is the high-side FET drain voltage  
ranges from 3 V to 28 V and the output voltage  
ranges from 0.6 V to 2.6 V. The device requires an  
external 5-V supply. The TPS51217 is available in a  
10-pin SON package specified from –40°C to 85°C.  
•
Adaptive On Time Control Architecture with  
Fixed 340kHz Operation  
•
•
•
•
•
•
•
•
•
•
Dynamic Output Voltage Change Capability  
4700 ppm/°C RDS(on) Current Sensing  
Internal 0.9-ms Voltage Servo Softstart  
Pre-Charged Start-up Capability  
Built-in Output Discharge  
Power Good Output  
Integrated Boost Switch  
Built-in OVP/UVP/OCP  
Thermal Shutdown (Non-latch)  
SON-10 (DSC) Package  
TYPICAL APPLICATION CIRCUIT  
V5IN  
V
IN  
TPS1217  
PGOOD  
10  
1
2
3
4
5
VBST  
DRVH  
SW  
9
8
7
6
TRIP  
EN  
EN  
V
V
OUT  
VFB  
V5IN  
DRVL  
VID1  
TRAN  
GND  
VID0  
_GND  
OUT  
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
D-CAP 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 © 2009, Texas Instruments Incorporated  
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TPS51217DSCT 替代型号

型号 品牌 替代类型 描述 数据表
TPS51217DSCR TI

完全替代

 HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY

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