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參數(shù)資料
| 型號： | PTH08000WAZT |
| 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, DIP-6 |
| 文件頁數(shù)： | 18/20頁 |
| 文件大?。?/td> | 661K |
| 代理商： | PTH08000WAZT |
www.ti.com
APPLICATION INFORMATION
Adjusting the Output Voltage of the PTH08000W Wide-Output Adjust Power Modules
R
=10k
x
SET
W
0.891 V
V -0.9V
O
-1.82kW
VI
GND
VO
RSET
0.05W
1%
PTH08000W
1
5
6
2
3
4
V Adj
O
GND
Inhibit
VI
VO
C
100 F
(Required)
I
m
C
100 F
(Optional)
O
m
Track
SLTS248B – JUNE 2005 – REVISED FEBRUARY 2008
The VO Adjust control (pin 5) sets the output voltage of the PTH08000W product. The adjustment range is from
0.9 V to 5.5 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 (V)
RSET (k)
VO (V)
(Required)
(Standard Value)
(Actual)
5 (1)
0.348
5.010
3.3
1.87
3.315
2.5
3.74
2.503
2
6.19
2.012
1.8
8.06
1.802
1.5
13.0
1.501
1.2
27.4
1.205
1
86.6
1.001
0.9
Open
0.9
(1)
The minimum input voltage is 4.5 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 2005–2008, Texas Instruments Incorporated
7
Product Folder Link(s) :PTH08000W
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| PTH08080W | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.25-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR |
| PTH08080WAD | 功能描述:DC/DC轉(zhuǎn)換器 2.25A Wide Input/ Out Adj Mini 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: |
| PTH08080WAH | 功能描述:DC/DC轉(zhuǎn)換器 2.25A Wide Input/ Out Adj Mini 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: |
| PTH08080WAS | 功能描述:DC/DC轉(zhuǎn)換器 2.25A Wide Input/ Out Adj Mini 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: |
| PTH08080WAST | 功能描述:DC/DC轉(zhuǎn)換器 2.25A Wide Input/ Out Adj Mini 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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