參數(shù)資料
型號(hào)： PTH08T230WAD
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 PACKAGE-10
文件頁(yè)數(shù)： 4/39頁(yè)
文件大?。?/td> 1281K
代理商： PTH08T230WAD
R
SET
=10k
x
W
0.69
V
-0.69
O
-1.43k W
PTH08T230W
GND
VoAdj
7
5
+Sense
Sense
V
O
V
O
R
1%
SET
0.05W
3
6
4
SLTS265K – NOVEMBER 2005 – REVISED JUNE 2010
www.ti.com
APPLICATION INFORMATION
ADJUSTING THE OUTPUT VOLTAGE
The VO Adjust control (pin 7) sets the output voltage of the PTH08T230/231W. The adjustment range is 0.69 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 the –Sense pins. Table 1 gives the standard 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 required resistor value can either be calculated using the following formula, or
simply selected from the values given in Table 2. Figure 11 shows the placement of the required resistor.
(1)
Table 1. Preferred Values of RSET for Standard Output Voltages
VO (Standard) (V)
RSET (Standard Value) (k)
VO (Actual) (V)
5.0 (1)
0.169
5.01
3.3
1.2
3.30
2.5
2.37
2.51
1.8
4.7
1.81
1.5
6.98
1.51
1.2 (2)
12.1
1.20
1.0 (2)
20.5
1.01
0.7 (2)
681
0.70
(1)
For VO > 3.6 V, the minimum input voltage is (VO + 1) V.
(2)
For output voltages
≤ 1.2V, at nominal operating frequency, the output ripple may increase (typically
2×) when operating at input voltages greater than (VO × 11). When using the SmartSync feature,
review the SmartSync application section for further guidance.
(1)
RSET: Use a 0.05 W resistor with a tolerance of 1% and temperature stability of 100 ppm/°C (or better). Connect the
resistor directly between pins 7 and 6, as close to the regulator as possible, using dedicated PCB traces.
(2)
Never connect capacitors from VO Adjust to either GND, VO, or +Sense. Any capacitance added to the VO Adjust pin
affects the stability of the regulator.
Figure 11. VO Adjust Resistor Placement
12
Copyright 2005–2010, Texas Instruments Incorporated
Product Folder Link(s): PTH08T230W PTH08T231W
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTH08T230WAS 功能描述:DC/DC轉(zhuǎn)換器 6A 2.2-5.5V Input Non Isolated POL 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:
PTH08T230WAST 功能描述:DC/DC轉(zhuǎn)換器 6A 2.2-5.5V Input Non Isolated POL 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:
PTH08T230WAZ 功能描述:DC/DC轉(zhuǎn)換器 6A 2.2-5.5V Input Non Isolated POL 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:
PTH08T230WAZT 功能描述:DC/DC轉(zhuǎn)換器 6A 2.2-5.5V Input Non Isolated POL 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:
PTH08T231W 制造商:TI 制造商全稱:Texas Instruments 功能描述:6-A, 4.5-V to 14-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans⑩
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