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參數(shù)資料
| 型號(hào)： | PTV12020WAD |
| 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, SIP-12 |
| 文件頁數(shù)： | 21/22頁 |
| 文件大?。?/td> | 414K |
| 代理商： | PTV12020WAD |
www.ti.com
APPLICATION INFORMATION
ADJUSTING THE OUTPUT VOLTAGE
PTV12020
10, 11
7
3, 4
+
GND
GN D
1, 2
GND
VO Sense
VO
VO Adj
VO Sense
VO
CO
330 mF
(Optional)
8
RSET
1%, 0.05W
SLTS231C – NOVEMBER 2004 – REVISED FEBRUARY 2007
The VO Adjust control (pin 8) sets the output voltage of the PTV12020 product. The adjustment range is from
1.2 V to 5.5 V for the W-suffix modules and 0.8 V to 1.8 V for L-suffix modules. 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 or 2). 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 Equation 1 or simply selected from the range of values given in
Table 3.Figure 11 shows the placement of the required resistor.
Table 1. Standard Values of RSET for Common Output Voltages
PTV12020W
PTV12020L
VO (V)
RSET (k)
VO (V)
RSET (k)
VO (V)
(Required)
(Standard Value)
(Actual)
(Standard Value)
(Actual)
5
0.280
5.009
N/A
3.3
2.0
3.294
N/A
2.5
4.32
2.503
N/A
2
8.06
2.010
N/A
1.8
11.5
1.801
0.130
1.800
1.5
24.3
1.506
3.57
1.499
1.2
Open
1.200
12.1
1.201
1.1
N/A
18.7
1.101
1.0
N/A
32.4
0.999
0.9
N/A
71.5
0.901
0.8
N/A
Open
0.800
(1)
A 0.05-W rated resistor may be used. The tolerance should be 1%, with temperature stability of 100 ppm/°C (or
better). Place the resistor as close to the regulator as possible. Connect the resistor directly between pin 8 and pins
1 or 2, using dedicated PCB traces.
(2)
Never connect capacitors from VoAdj to either GND or Vo. Any capacitance added to the VoAdj pin affects the
stability of the regulator.
Figure 11. VO Adjust Resistor Placement
8
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| PTV12020WAH | 功能描述:DC/DC轉(zhuǎn)換器 1.2-5.5V 16A 12V-In WideAdj SIP 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: |
| PTV12020WAH | 制造商:Texas Instruments 功能描述:REG SW 1.2-5.5V 16A VRT TH 12SIP |
| PTV12B-E3/84A | 功能描述:穩(wěn)壓二極管 12 Volt 1.5 Watt RoHS:否 制造商:Vishay Semiconductors 齊納電壓:12 V 電壓容差:5 % 電壓溫度系數(shù):0.075 % / K 齊納電流: 功率耗散:3 W 最大反向漏泄電流:3 uA 最大齊納阻抗:7 Ohms 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AC 封裝:Reel |
| PTV12B-E3/85A | 功能描述:穩(wěn)壓二極管 12 Volt 1.5 Watt RoHS:否 制造商:Vishay Semiconductors 齊納電壓:12 V 電壓容差:5 % 電壓溫度系數(shù):0.075 % / K 齊納電流: 功率耗散:3 W 最大反向漏泄電流:3 uA 最大齊納阻抗:7 Ohms 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AC 封裝:Reel |
| PTV12B-M3/84A | 功能描述:穩(wěn)壓二極管 1.5watt 12volt RoHS:否 制造商:Vishay Semiconductors 齊納電壓:12 V 電壓容差:5 % 電壓溫度系數(shù):0.075 % / K 齊納電流: 功率耗散:3 W 最大反向漏泄電流:3 uA 最大齊納阻抗:7 Ohms 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AC 封裝:Reel |
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