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DCT04S0A0S03NFA Datasheet(PDF) 11 Page - Delta Electronics, Inc.

Part # DCT04S0A0S03NFA
Description  Non-Isolated Point of Load DC/DC Power Modules: 4.5~14Vin, 0.69V-5V/20Aout
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Manufacturer  DELTA [Delta Electronics, Inc.]
Direct Link  http://www.deltaww.com
Logo DELTA - Delta Electronics, Inc.

DCT04S0A0S03NFA Datasheet(HTML) 11 Page - Delta Electronics, Inc.

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DS_DCL12S0A0S20NFA_11152012
E-mail: DCDC@delta.com.tw
http://www.deltaww.com/dcdc
P11
FEATURES DESCRIPTIONS (CON.)
Output Voltage Programming
The output voltage of the DCL can be programmed to any
voltage between 0.69Vdc and 5.5Vdc by connecting one resistor
(shown as Rtrim in Figure 33) between the TRIM and GND pins
of the module. Without this external resistor, the output voltage of
the module is 0.69 Vdc. To calculate the value of the resistor
Rtrim for a particular output voltage Vo, please use the following
equation:


K
Vo
Rtrim
69
.
0
9
.
6
Rtrim is the external resistor in kΩ
Vo is the desired output voltage.
For example, to program the output voltage of the DCL module to
5.0Vdc, Rtrim is calculated as follows:


K
K
Rtrim
601
.
1
69
.
0
0
.
5
9
.
6
Figure 33: Circuit configulation for programming output voltage
using an external resister.
Table 1 provides Rtrim values required for some common
output voltages. By using a ±0.5% tolerance trim resistor with a
TC of
±100ppm, a set point tolerance of ±1.5% can be achieved as
specified in the electrical specification.
Certain restrictions apply on the output voltage set point
depending on the input voltage. These are shown in the Output
Voltage vs. Input Voltage Set Point Area plot in Fig. 34.
The Upper Limit curve shows that for output voltages of 0.9V
and lower, the input voltage must be lower than the maximum
of 14V.
The Lower Limit curve shows that for output voltages of 3.3V
and higher, the input voltage needs to be larger than the
minimum of 4.5V
Figure 34: Output voltage vs input voltage setpoint area plot
showing limits were the output can be set for different.input
voltage.


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