參數(shù)資料
型號(hào): PTH04T241WAZT
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, PLASTIC, DIP-11
文件頁數(shù): 4/38頁
文件大?。?/td> 964K
代理商: PTH04T241WAZT
APPLICATION INFORMATION
ADJUSTING THE OUTPUT VOLTAGE
R
SET + 10 kW
0.69
V
O * 0.69
* 1.43 kW
(1)
UDG06043
RSET
1%
0.05 W
VO
+Sense
Sense
VoAdj
GND
PTH04T240W/241W
3,4
5
6
7
8
+Sense
Sense
GND
VO
SLTS276D – OCTOBER 2006 – REVISED JULY 2009 ...................................................................................................................................................... www.ti.com
The Vo Adjust control (pin 8) sets the output voltage of the PTH04T240/241W. The adjustment range is 0.69 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 – 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 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 Standard Output Voltages
VO (Standard) (V)
RSET (Standard Value) (k)
VO (Actual) (V)
3.3 (1)
1.21
3.304
2.5 (1)
2.37
2.506
1.8 (1)
4.75
1.807
1.5 (1)
6.98
1.510
1.2
12.1
1.200
1
20.5
1.004
0.7
681
0.700
(1)
The minimum input voltage is 2.2 V or (VO + 0.5) V, whichever is greater.
(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 VOAdjust (pin 8) and -Sense (pin 7), as close to the regulator as possible, using dedicated
PCB traces.
(2)
Never connect capacitors from VO Adjust (pin 8) to either +Sense (pin 6), GND, or VO (pin 5). Any capacitance added
to the VO Adjust pin affects the stability of the regulator.
Figure 9. VO Adjust Resistor Placement
12
Copyright 2006–2009, Texas Instruments Incorporated
Product Folder Link(s): PTH04T240W PTH04T241W
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PTH04T260WAS 功能描述:DC/DC轉(zhuǎn)換器 3A 2.2V-5.5Vin Adj Pwr Module 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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PTH04T260WAZ 功能描述:DC/DC轉(zhuǎn)換器 3A 2.2V-5.5Vin Adj Pwr Module 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: