- 您现在的位置：买卖IC网 > PDF目录98066 > PTV08T250WAH (TEXAS INSTRUMENTS INC) 1-OUTPUT DC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | PTV08T250WAH |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 16/30页 |
| 文件大小： | 795K |
| 代理商： | PTV08T250WAH |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页当前第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页
Output On/Off Inhibit
PTV08T250W
6,7
13,14
20,21
4
5
11
VI
CI
16
Inhibit/
UVLO
GND
1= Inhibit
Q1
BSS138
V
(2V/div)
INH
I (2 A/div)
I
t-Time=2ms/div
V
(1V/div)
O
www.ti.com .......................................................................................................................................... SLTS260E – OCTOBER 2005 – REVISED NOVEMBER 2008
For applications requiring output voltage on/off control, the PTV08T250W incorporates an output Inhibit control
pin. The inhibit feature can be used wherever there is a requirement for the output voltage from the regulator to
be turned off.
The power modules function normally when the Inhibit pin is left open-circuit, providing a regulated output
whenever a valid source voltage is connected to VI with respect to GND.
Figure 21 shows the typical application of the inhibit function. Note the discrete transistor (Q1). The Inhibit input
has its own internal pull-up to a potential of 5 V. The input is not compatible with TTL logic devices and should
not be tied to VI. An open-collector (or open-drain) discrete transistor is recommended for control.
Figure 21. On/Off Inhibit Control Circuit
Turning Q1 on applies a low voltage to the Inhibit control pin and disables the output of the module. If Q1 is then
turned off, the module executes a soft-start power-up sequence. A regulated output voltage is produced within 25
ms. Figure 22 shows the typical rise in both the output voltage and input current, following the turn-off of Q1. The
turn off of Q1 corresponds to the rise in the waveform, Q1 VDS. The waveforms were measured with a 20-A
constant current load.
Figure 22. Power-Up Response from Inhibit Control
Copyright 2005–2008, Texas Instruments Incorporated
23
Product Folder Link(s): PTV08T250W
相关PDF资料 |
PDF描述 |
|---|---|
| PTV08T250WAD | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTV12010WAD | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTV12010WAH | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PVX003A0X43-SRZ | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PVX006A0X43-SRZ | DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PTV09 | 制造商:BOURNS 制造商全称:Bourns Electronic Solutions 功能描述:9 mm Potentiometer |
| PTV09A-2015F-A102 | 制造商:BOURNS 制造商全称:Bourns Electronic Solutions 功能描述:9 mm Potentiometer |
| PTV09A-2015F-A202 | 制造商:BOURNS 制造商全称:Bourns Electronic Solutions 功能描述:9 mm Potentiometer |
| PTV09A-2015F-A502 | 制造商:BOURNS 制造商全称:Bourns Electronic Solutions 功能描述:9 mm Potentiometer |
| PTV09A-2015F-B102 | 制造商:BOURNS 制造商全称:Bourns Electronic Solutions 功能描述:9 mm Potentiometer |
发布紧急采购，3分钟左右您将得到回复。