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参数资料
| 型号： | PTH03000WAH |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, PACKAGE-5 |
| 文件页数： | 11/13页 |
| 文件大小： | 375K |
| 代理商： | PTH03000WAH |
Application Notes
For technical support and further information visit http://power.ti.com
PTH03000W
Adjusting the Output Voltage of the PTH03000W
Wide-Output Adjust Power Modules
The Vo Adjust control (pin 4) sets the output voltage of
the PTH03000Wproduct. The adjustment range is
from 0.9 V to 2.5 V. The adjustment method requires
the addition of a single external resistor, Rset, that must
be connected directly between the Vo Adjust and GND
pins 1. Table 2-1 gives the preferred value of the external
resistor for a number of standard voltages, along with the
actual output voltage that this resistance value provides.
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 2-2.
Figure 2-1 shows the placement of the required resistor.
Rset
= 10 k
0.891 V
– 4.99 k
Vout – 0.9 V
Figure 2-1; V
o
Adjust Resistor Placement
Notes:
1. Use a 0.1 W resistor. 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 4 and 1
using dedicated PCB traces.
2. Never connect capacitors from Vo Adjust to either GND or
Vout. Any capacitance added to the Vo Adjust pin will affect
the stability of the regulator.
0.900
Open
0.92535
1 k
0.950
173 k
0.975114 k
1.000
84.1 k
1.02566.3 k
1.050
54.4 k
1.07545
.9 k
1.100
39.6 k
1.12534.6 k
1.150
30.7 k
1.17527.4 k
1.200
24.7 k
1.22522.4 k
1.250
20.5 k
1.27518.8 k
1.300
17.3 k
1.32516.0 k
1.350
14.8 k
1.37513.8 k
1.400
12.8 k
1.42512.0 k
1.450
11.2 k
1.47510.5
k
Vout (Standard)
Rset (Pref’d Value)
Vout (Actual)
2.5 V
576
2.501V
2 V
3.09 k
2.003 V
1.8 V
4.87 k
1.804 V
1.5 V
9.76 k
1.504 V
1.2 V
24.3 k
1.204 V
1 V
82.5 k
1.002 V
0.9 V
Open
0.9 V
Table 2-1; Preferred Values of R
set
for Standard Output Voltages
Table 2-2; Output Voltage Set-Point Resistor Values
Va Req’dRset
1.50
9.86 k
1.55
8.72 k
1.60
7.74 k
1.656.89 k
1.70
6.15 k
1.755
.49 k
1.80
4.91 k
1.854.39 k
1.90
3.92 k
1.953.5
0 k
2.00
3.11 k
2.052.76 k
2.10
2.44 k
2.152.14 k
2.20
1.86 k
2.251.61 k
2.30
1.37 k
2.351.15
k
2.40
950
2.4575
8
2.50
579
PTH03000W
V
IN
1
4
5
2
3
C
IN
100F
(Required)
+
C
OUT
100F
(Optional)
+
Inhibit
GND
V
OUT
R
SET
0.1 W, 1 %
V
O Adj
GND
Inhibit
V
IN
V
O
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| PTH03000WAS | 功能描述:DC/DC转换器 6A 3.3V-In Wide-Out Adj Plug-in Pwr Mdl RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
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| PTH03000WAZ | 功能描述:DC/DC转换器 6A 3.3V-In Wide-Out Adj Plug-in Pwr Mdl RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PTH03000WAZT | 功能描述:DC/DC转换器 6A 3.3V-In Wide-Out Adj Plug-in Pwr Mdl RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
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