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參數(shù)資料
| 型號： | 94SA108X0016HBP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 60-A, 3.3/5-V INPUT, NONISOLATED WIDE-OUTPUT ADJUST POWER MODULE |
| 中文描述： | 60甲，3.3/5-V輸入，非隔離寬輸出調(diào)節(jié)電源模塊 |
| 文件頁數(shù)： | 3/24頁 |
| 文件大?。?/td> | 947K |
| 代理商： | 94SA108X0016HBP |
www.ti.com
ADJUSTING THE OUTPUT VOLTAGE OF THE PTH04040W WIDE-OUTPUT ADJUST POWER
Rset + 10 kW
0.8 V
Vout * 0.8 V
* 2.49 kW
(1)
RSET
1%
0.05 W
PTH04040W
12
15
9
10 13
16
11
14
18
VO
CO
+Sense
Sense
GND
Track
Adjust
17
GND
PTH04040W
SLTS238A – SEPTEMBER 2005 – REVISED FEBRUARY 2006
MODULE
The VO Adjust control (pin 17) sets the output voltage of the PTH04040W to a value higher than 0.8 V. The
adjustment range is from 0.8 V to 2.5 V. For an output voltage other than 0.8 V a single external resistor, RSET 1,
must be connected directly between the VO Adjust (pin 17) and the output GND (pin 16)
(2). Table 2 gives the
preferred 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 is calculated using the following formula, or by
selecting from the range of values given in Table 3. Figure 9 shows the placement of the required resistor.
Table 2. Preferred Values of Rset for Standard Output Voltages
VOUT (Standard) (1)
RSET (Preferred Value)
VOUT (Actual)
2.5 V
2.21
2.502 V
2 V
4.12
2.010 V
1.8 V
5.49
1.803 V
1.5 V
8.87
1.504 V
1.2 V
17.4
1.202 V
1 V
36.5
1.005 V
0.8 V
Open
0.8 V
(1)
The nominal input voltage must be at least 2
× V
O. Output voltage regulation is guaranteed with an input voltage within ±10% from
nominal 3.3 V or 5 V. For example, for VI = 5 V and VO = 2.5 V, the input can vary between 4.5 V and 5.5 V.
Figure 9. VO Adjust Resistor Placement
11
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