參數(shù)資料
型號： PTH04T260WAS
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源模塊
英文描述： 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝： PLASTIC, DIP-10
文件頁數(shù)： 17/36頁
文件大?。?/td> 1162K
代理商： PTH04T260WAS
Output On/Off Inhibit
GND
2
3
+
GND
Inhibit/
UVLO
1 = Inhibit
Q1
BSS138
10
VI
CI
UDG06045
PTH04T260/261W
T Time 10 ms/div
VO
(1 V/div)
II
(1 A/div)
VINH
(2 V/div)
Overcurrent Protection
SLTS273E – SEPTEMBER 2006 – REVISED JULY 2009.................................................................................................................................................. www.ti.com
For applications requiring output voltage on/off control, the PTH04T260/261W 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. An external pull-up should never be connected to the inhibit pin. The input is not
compatible with TTL logic devices. An open-collector (or open-drain) discrete transistor is recommended for
control.
Figure 21. On/Off Inhibit Control Circuit
Figure 22. Power-Up Response from Inhibit Control
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 40
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, VINH. The waveforms were measured with a 3-A constant
current load.
For protection against load faults, all modules incorporate output overcurrent protection. Applying a load that
exceeds the regulator's overcurrent threshold causes the regulated output to shut down. Following shutdown, a
module periodically attempts to recover by initiating a soft-start power-up. This is described as a hiccup mode of
operation, whereby the module continues in a cycle of successive shutdown and power up until the load fault is
removed. During this period, the average current flowing into the fault is significantly reduced. Once the fault is
removed, the module automatically recovers and returns to normal operation.
24
Copyright 2006–2009, Texas Instruments Incorporated
Product Folder Link(s): PTH04T260W PTH04T261W
相關PDF資料
PDF描述
PTH04T261WAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH04T261WAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH05050YAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH05050YAZ 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH03050YAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
相關代理商/技術參數(shù)
參數(shù)描述
PTH04T260WAST 功能描述:DC/DC轉換器 3A 2.2V-5.5Vin Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸:
PTH04T260WAZ 功能描述:DC/DC轉換器 3A 2.2V-5.5Vin Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸:
PTH04T260WAZT 功能描述:DC/DC轉換器 3A 2.2V-5.5Vin Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸:
PTH04T260WP 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans⑩
PTH04T261W 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans⑩
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*