參數(shù)資料
型號: PTH08T240WAD
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: ROHS COMPLIANT PACKAGE-11
文件頁數(shù): 17/39頁
文件大?。?/td> 1366K
代理商: PTH08T240WAD
On/Off Inhibit
11
Inhibit/
UVLO
GND
2
GND
3,4
VI
1 = Inhibit
Q1
BSS 138
PTH08T240W/241W
CI
t Time 4ms/div
VO (2V/div)
II (2 A/div)
V
(2V/div)
INH
SLTS264J – NOVEMBER 2005 – REVISED JUNE 2009 ................................................................................................................................................... www.ti.com
For applications requiring output voltage on/off control, the PTH08T240/241W incorporates an 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 23 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 resistor should never be used with 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 23. 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 15
ms. Figure 24 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 10-A constant
current load.
Figure 24. Power-Up Response from Inhibit Control
24
Copyright 2005–2009, Texas Instruments Incorporated
Product Folder Link(s): PTH08T240W PTH08T241W
相關(guān)PDF資料
PDF描述
PTH08T241WAZ 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
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PTH08T240WAZ 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T240WAH 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T240WAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTH08T240WAH 功能描述:DC/DC轉(zhuǎn)換器 10A 4.5-14V-Input Wide-Out Adj Pwr Mdl 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH08T240WAS 功能描述:DC/DC轉(zhuǎn)換器 10A 4.5-14V-Input Wide-Out Adj Pwr Mdl 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH08T240WAST 功能描述:DC/DC轉(zhuǎn)換器 10A 4.5-14V-Input Wide-Out Adj Pwr Mdl 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH08T240WAZ 功能描述:DC/DC轉(zhuǎn)換器 10A 4.5-14V-Input Wide-Out Adj Pwr Mdl 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH08T240WAZ 制造商:Texas Instruments 功能描述:DC/DC Converter