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參數(shù)資料
| 型號： | PTN04050AAZ |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 310 kHz SWITCHING FREQ-MAX, PDMA5 |
| 封裝： | ROHS COMPLIANT, DIP MODULE-5 |
| 文件頁數(shù)： | 17/19頁 |
| 文件大?。?/td> | 699K |
| 代理商： | PTN04050AAZ |
www.ti.com
APPLICATION INFORMATION
Adjusting the Output Voltage of the PTN04050A Wide-Output Adjust Power Modules
General
R
=-4.34k
x
SET
W
V
+1.734V
O
V
+16.6V
O
(1)
GND
V
O
V
I
R
0.05W,1%
SET
PTN04050A
4
5
2
Adj
GND
VO
VI
GND
Inhibit
1
3
+
C1
CO
SLTS250 – SEPTEMBER 2005
A resistor must be connected directly between the VO Adjust control (pin 4) and GND (pin 1) to set the output
voltage of the module. The adjustment range is from –15 V to –3.3 V. If pin 4 is left open, the output voltage
defaults to –1.79 V, which is beyond the recommended operating range.
Table 1 gives the standard resistor value for a number of common voltages, along with the actual output voltage
that the value produces. For other output voltages, the resistor value can either be calculated using Equation 1,
or by selecting from the range of values given in Table 2. Figure 15 shows the placement of the required
resistor.
Table 1. Standard Values of Rset for Common Output
Voltages
VO
RSET
VO
(Required)
(Standard Value)
(Actual)
–15 V (1)
523
–15.00 V
–12 V (2)
1.91 k
–12.02 V
–5 V(2)
15.4 k
–5.00 V
–3.3 V(2)
36.5 k
–3.31 V
(1)
For VO = –12.6 V to –15 V the maximum output current is limited to
0.3 A.
(2)
For VO = –3.3 V to – 12.6 V the maximum output current is 1 A or
the maximum output power is 6 W, whichever is less.
(1)
A 0.05-W rated resistor may be used. The tolerance should be 1%, with a temperature stability of 100 ppm/°C (or
better). Place the resistor as close as possible to the regulator. Connect the resistor directly between pins 4 and 1
using dedicated PCB traces.
(2)
Never connect capacitors from VO Adjust to either GND or VO. Any capacitance added to the VO Adjust pin affects
the stability of the regulator.
Figure 15. VO Adjust Resistor Placement
7
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| PTN04050AAZT | 功能描述:DC/DC轉(zhuǎn)換器 6-W 3.3/5-V Input Wide Adjust Output 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: |
| PTN04050C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:12 - W, 3.3 / 5 - V INPUT, WIDE OUTPUT ADJUSTABLE BOOST CONVERTER |
| PTN04050C_11 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:12-W, 3.3/5-V INPUT, WIDE OUTPUT ADJUSTABLE BOOST CONVERTER |
| PTN04050CAD | 功能描述:DC/DC轉(zhuǎn)換器 12W 3.3/5V In Wide Adj Out Boost Cnvtr 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: |
| PTN04050CAH | 功能描述:DC/DC轉(zhuǎn)換器 12W 3.3/5V In Wide Adj Out Boost Cnvtr 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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