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參數(shù)資料
| 型號： | PTN04050AAZT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 310 kHz SWITCHING FREQ-MAX, PDMA5 |
| 封裝： | ROHS COMPLIANT, DIP MODULE-5 |
| 文件頁數(shù)： | 4/19頁 |
| 文件大?。?/td> | 699K |
| 代理商： | PTN04050AAZT |
www.ti.com
Output On/Off Inhibit
+
INH
GND
CO
R
0.05W,1%
SET
CI
PTN04050A
GND
Adj
VO
VI
2
5
4
1
3
VI
INH
t-Time=40ms/div
V
(5V/Div)
O
I (1 A/Div)
I
V
(2V/Div)
INH
INHRelease
SLTS250 – SEPTEMBER 2005
For applications requiring output voltage on/off control, the PTN04050A power module incorporates an output
on/off Inhibit control (pin 3). The inhibit feature can be used wherever there is a requirement for the output
voltage from the regulator to be turned off.
The power module functions 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 17 shows the typical application of the inhibit function. Note the discrete transistor (Q1). The Inhibit
control has its own internal pullup to VI. An open-collector or open-drain (non-TTL) device is required to control
this input.
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. Figure 18 shows the typical rise in the output
voltage, 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 500-mA resistive load.
Note: The PTN04050A Inhibit control circuitry must not be shared with another module. Never connect a resistor
between the Inhibit pin and any voltage reference or GND.
Figure 17. Inhibit Circuit
Figure 18. Inhibit Waveform
12
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PTN04050C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:12 - W, 3.3 / 5 - V INPUT, WIDE OUTPUT ADJUSTABLE BOOST CONVERTER |
| PTN04050C_11 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:12-W, 3.3/5-V INPUT, WIDE OUTPUT ADJUSTABLE BOOST CONVERTER |
| PTN04050CAD | 功能描述:DC/DC轉(zhuǎn)換器 12W 3.3/5V In Wide Adj Out Boost Cnvtr 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: |
| PTN04050CAH | 功能描述:DC/DC轉(zhuǎn)換器 12W 3.3/5V In Wide Adj Out Boost Cnvtr 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: |
| PTN04050CAH | 制造商:Texas Instruments 功能描述:DC-DC CONV NON ISO POL 1 O/P 12W 5V 制造商:Texas Instruments 功能描述:DC-DC CONV, NON ISO POL, 1 O/P, 12W, 5V |
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