108979675 Lineage Power, 108979675 Datasheet - Page 13

• Manufacturer Part Number: 108979675
• Description: Module DC-DC 1-OUT 0.75V to 3.63V 5A 5-Pin SIP
• Manufacturer: Lineage Power
• Type: Non-Inverting|Inverting|Step Up|Step Downr

Specifications of 108979675

• Package: 5SIP
• Output Current: 5 A
• Output Voltage: 0.75 to 3.63 V
• Input Voltage: 3 to 5.5 V
• Number Of Outputs: 1
• Switching Regulator: Yes

Data Sheet
July 2, 2010
Feature Descriptions
Output Voltage Programming
The output voltage of the Austin MicroLynx
programmed to any voltage from 0.75Vdc to 3.63Vdc by
connecting a resistor (shown as Rtrim in Figure 29)
between Trim and GND pins of the module. Without an
external resistor between Trim and GND pins, the output
of the module will be 0.7525Vdc. To calculate the value
of the trim resistor, Rtrim for a desired output voltage, use
the following equation:
Rtrim is the external resistor in Ω
Vo is the desired output voltage
For example, to program the output voltage of the Austin
MicroLynx
follows:
Figure 29. Circuit configuration to program output
voltage using an external resistor
Austin MicroLynx
a voltage between TRIM and GND pins (Figure 30). The
following equation can be used to determine the value of
Vtrim needed to obtain a desired output voltage Vo:
For example, to program the output voltage of a
MicroLynx
follows:
LINEAGE
V
ON/OFF
IN
Vtrim
TM
(+)
Vtrim
TM
POWER
GND
Rtrim
module to 1.8V, Rtrim is calculated as
module to 3.3 Vdc, Vtrim is calculated as
Rtrim
=
=
TM
0 (
(
V
TRIM
0
=
Rtrim
can also be programmed by applying
O
7 .
Vtrim
7 .
=
(+)



Vo
−



−
1
. 0
. 0
8 .
21070
−
1698
1698
21070
=
=
−
. 0
. 0
. 9
. 0
7525
7525
024
2670
(continued)
×
×
{
{
3
Vo
k
−
3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current
3 .
−
V
Ω
5110
5110
−
−
R
. 0
. 0
trim
7525
7525






TM
Ω
can be
}
}
)
)
Austin MicroLynx
LOAD
Figure 30. Circuit Configuration for programming
Output voltage using external voltage source
Table 1 provides Rtrim values for most common
output voltages. Table 2 provides values of
external voltage source, Vtrim for various output
voltage.
Using 1% tolerance trim resistor, set point tolerance of
±2% is achieved as specified in the electrical
specification. The POL Programming Tool, available at
www.lineagepower.com
helps determine the required external trim resistor
needed for a specific output voltage.
V
ON/OFF
IN
Table 1
Table 2
TM
(+)
SIP Non-isolated Power Modules:
GND
V
V
0.7525
0.7525
O, set
O, set
1.2
1.5
1.8
2.5
3.3
1.2
1.5
1.8
2.5
3.3
V
TRIM
O
(V)
(V)
(+)
under the Design Tools section,
+
Rtrim (KΩ)
-
Vtrim (V)
41.973
23.077
15.004
0.6240
0.5731
0.5221
0.4033
0.2670
6.947
3.160
Open
Open
V
t
rim
13
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