參數(shù)資料
型號: PTH04T240FAD
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: DIP-11
文件頁數(shù): 14/35頁
文件大?。?/td> 3835K
代理商: PTH04T240FAD
On/Off Inhibit
V
I
Inhibit/
UVLO Prog
1=Inhibit
PTH04T240F
3
2
C
I
11
4
+
GND
UDG-08163
V
I
GND
V
O (500 mV/div)
V
I (2 V/div)
I
I (1 A/div)
T - Time - 4 ms/div
www.ti.com ............................................................................................................................................... SLTS293A – DECEMBER 2008 – REVISED MARCH 2009
For applications requiring output voltage on/off control, the PTH04T240F 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 19 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.
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 20 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 19. On/Off Inhibit Control Circuit
Figure 20. Power-Up Response from Inhibit Control
Copyright 2008–2009, Texas Instruments Incorporated
21
Product Folder Link(s): PTH04T240F
相關(guān)PDF資料
PDF描述
PTH04T240FAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH04T240FAS 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH04T240FAZ 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH04T240FAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTH04T240FAS 功能描述:DC/DC轉(zhuǎn)換器 10A,2.2V-5.5V Inp Pwr Mod 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:
PTH04T240FAST 功能描述:DC/DC轉(zhuǎn)換器 10A,2.2V-5.5V Inp Pwr Mod 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:
PTH04T240FAZ 功能描述:DC/DC轉(zhuǎn)換器 10A,2.2V-5.5V Inp Pwr Mod 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:
PTH04T240FAZT 功能描述:DC/DC轉(zhuǎn)換器 10A,2.2V-5.5V Inp Pwr Mod 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:
PTH04T240W 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TURBOTRANS⑩