參數(shù)資料
型號： PTH08T221WAST
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： PLASTIC, DIP-11
文件頁數(shù)： 3/38頁
文件大小： 1290K
代理商： PTH08T221WAST
APPLICATION INFORMATION
ADJUSTING THE OUTPUT VOLTAGE
R
=10k
x
SET
W
0.69
V
-0.69
O
-1.43kW
(1)
5
3
4
6
7
GND
8
GND
+Sense
VO
Sense
V Adj
O
PTH08T220W/221W
RSET
1%
0.05W
+Sense
VO
Sense
CO
www.ti.com................................................................................................................................................... SLTS252K – NOVEMBER 2005 – REVISED JUNE 2009
The Vo Adjust control (pin 8) sets the output voltage of the PTH08T220/221W. The adjustment range of the
PTH08T220/221W 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 – 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 12 shows the placement of the required
resistor.
Table 1. Standard Values of RSET for Standard Output Voltages
VO (Standard)
RSET (Standard Value)
VO (Actual)
5.0 V (1)
169
5.005 V
3.3 V
1.21 k
3.304 V
2.5 V
2.37 k
2.506 V
1.8 V
4.75 k
1.807 V
1.5 V
6.98 k
1.510 V
1.2 V (2)
12.1 k
1.200 V
1.0 V (2)
20.5 k
1.004 V
0.7 V (2)
681 k
0.700 V
(1)
For VO > 3.6 V, the minimum input voltage is (VO + 2) 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 8 and 7, as close to the regulator as possible, using dedicated PCB traces.
(2)
Never connect capacitors from VO Adjust to either + Sense, GND, or VO. Any capacitance added to the VO Adjust pin
affects the stability of the regulator.
Figure 12. VO Adjust Resistor Placement
Copyright 2005–2009, Texas Instruments Incorporated
11
Product Folder Link(s): PTH08T220W PTH08T221W
相關(guān)PDF資料
PDF描述
PTH08T221WAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T220WAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T220WAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T220WAS 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T231WAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTH08T221WAZ 功能描述:DC/DC轉(zhuǎn)換器 16A 4.5V to 14V Inp Ceramic Cap Version 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:
PTH08T221WAZT 功能描述:DC/DC轉(zhuǎn)換器 16A 4.5V to 14V Inp Ceramic Cap Version 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:
PTH08T230W 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 TurboTrans
PTH08T230W_07 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
PTH08T230WAD 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:
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*