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SPM1006 Datasheet(PDF) 10 Page - Sumida Corporation

Part No. SPM1006
Description  4-28V Input 8A Output Power Supply in Inductor (PSI2) Module
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Maker  SUMIDA [Sumida Corporation]
Homepage  http://www.sumida.com
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SPM1006 Datasheet(HTML) 10 Page - Sumida Corporation

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SPM1006
Version 1.5
March 16, 2016
Page 10 of 22
APPLICATION INFORMATION
Output Voltage Programming
The output voltage is programmed using a resistor RPROG from VADJ to PGND, as shown in Fig. 13. By default, the output
voltage is 0.6V without a resistor connected.
Note that the input voltage must be at least 1.5V higher than the output voltage
Fig. 13 Output Voltage Programming Circuit
A single standard 1% resistor can be used to program for any of the common voltages shown in Table 1.
Table 1 - Output Voltage Programming Resistor
0.8V
1.0V
1.2V
1.5V
1.8V
2.5V
3.3V
5.0V
33.2kΩ
16.5kΩ
11kΩ
7.32kΩ
5.49kΩ
3.48kΩ
2.43kΩ
1.5kΩ
The programming resistor can be calculated for any output voltage using equation (1).
1
6
.
0
/
11
V
V
k
R
OUT
PROG
(1)
Note that the VADJ pin is noise sensitive and the connections to this pin should be kept as short as possible.
To further adjust the output voltage, another resistor RTRIM may be connected between VSENSE and VADJ, as shown
Fig. 14. The resulting output voltage is a function of equation (2).
)
)
11
11
*
(
1
(
*
6
.
0
PROG
TRIM
TRIM
OUT
R
k
R
k
R
V
V
(2)
VADJ
VSENSE
R1
RPROG
VOUT
COUT
0.6V
SPM1006
VOUT
AGND
PGND


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