參數(shù)資料
型號(hào)： PTH04000WAH
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-6
文件頁(yè)數(shù)： 19/21頁(yè)
文件大?。?/td> 726K
代理商： PTH04000WAH
www.ti.com
APPLICATION INFORMATION
Adjusting the Output Voltage of the PTH04000W Wide-Output Adjust Power Modules
R
SET =10k
x
W
0.891 V
V -0.9V
O
-3.24kW
VI
+
GND
1
5
6
3
4
2
Track
VI
VO
GND
Inhibit
V Adj
O
C
47 F
(Required)
I
PTH04000W
C
47 F
(Optional)
O
R
0.05W
1%
SET
SLTS247B – JUNE 2005 – REVISED OCTOBER 2007
The VO Adjust control (pin 5) sets the output voltage of the PTH04000W product. The adjustment range is from
0.9 V to 3.6 V. The adjustment method requires the addition of a single external resistor, RSET, that must be
connected directly between the VO Adjust and GND pin 1. Table 1 gives the standard external resistor for a
number of common bus voltages, along with the actual voltage the resistance produces.
For other output voltages, the value of the required resistor can either be calculated using the following formula,
or simply selected from the range of values given in Table 2. Figure 9 shows the placement of the required
resistor.
Table 1. Standard Values of Rset for Common Output
Voltages
VO
RSET
VO
(Required)
(Standard Value)
(Actual)
3.3 V (1)
475
3.298 V
2.5 V (1)
2.32 k
2.502 V
2 V
4.87 k
1.999 V
1.8 V
6.65 k
1.801 V
1.5 V
11.5 k
1.504 V
1.2 V
26.1 k
1.204 V
1 V
84.5 k
1.001 V
0.9 V
Open
0.9 V
(1)
The minimum input voltage is 3 V or (VO + 1.1) V, whichever is
greater.
(1)
A 0.05-W rated resistor may be used. The tolerance should be 1%, with a temperature stability of 100 ppm/
°C (or
better). Place the resistor as close to the regulator as possible. Connect the resistor directly between pins 5 and 1
using dedicated PCB traces.
(2)
Never connect capacitors from VO Adjust to either GND or VO. Any capacitance added to the VO Adjust pin affects the
stability of the regulator.
Figure 9. VO Adjust Resistor Placement
Copyright 2005–2007, Texas Instruments Incorporated
7
Product Folder Link(s): PTH04000W
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTH04000WAH 制造商:Texas Instruments 功能描述:IC MODULE PIP .9-3.6V 3A HORZ T/H 制造商:Texas Instruments 功能描述:IC, MODULE PIP .9-3.6V 3A HORZ T/H 制造商:Texas Instruments 功能描述:IC, MODULE PIP .9-3.6V 3A HORZ T/H; Primary Input Voltage:5.5V; No. of Outputs:1; Output Voltage:3.6V; Output Current:3A; Voltage Regulator Case Style:Thru Hole Module; No. of Pins:6; Operating Temperature Min:-40C; Operating ;RoHS Compliant: Yes
PTH04000WAS 功能描述:DC/DC轉(zhuǎn)換器 3A 3.3/5V Input Adj Switching Regulator 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:
PTH04000WAS1 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A, 3.3/5-V INPUT, ADJUSTABLE SWITCHING REGULATOR
PTH04000WAST 功能描述:DC/DC轉(zhuǎn)換器 3A 3.3/5V Input Adj Switching Regulator 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:
PTH04000WAZ 功能描述:DC/DC轉(zhuǎn)換器 3A 3.3/5V Input Adj Switching Regulator 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:
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