SW001A2B91-SR Lineage Power, SW001A2B91-SR Datasheet - Page 15

• Manufacturer Part Number: SW001A2B91-SR
• Description: DC/DC Converters & Regulators SMT 1.2A, IN 48V OUT 12V, NEGATIVE
• Manufacturer: Lineage Power
• Type: Step Downr

Specifications of SW001A2B91-SR

• Output Current: 1.2A
• Input Voltage: 48V
• Output Voltage: 12V
• Screening Level: Industrial
• Product Length (mm): 24.4mm
• Product Depth (mm): 27.9mm
• Mounting Style: Surface Mount
• Pin Count: 6
• Number Of Outputs: 1
• Package / Case: SMT
• Lead Free Status / RoHS Status: Not Compliant

Data Sheet
October 5, 2009
Feature Descriptions
Trim Up – Increase Output Voltage
By connecting an external resistor between the TRIM pin
and Vout- pin (Radj-up), the output voltage set point
increases (see figure 48). The following equation
determines the external resistor value to obtain an
output voltage change from Vo, nom to the desired Vo,
adj:
Note: Values for G, H, L and K are defined for each
module version in the following table 1.
Figure 48. Circuit Configuration to Increase Output
Voltage.
Table 1. Trim Constants SW series
The combination of the output voltage adjustment and
the output voltage initial tolerance must not exceed the
allowable trim range of 90% to 110% of the nominal
output voltage as measured between the Vout+ and
Vout- pins.
The SW/SC power modules have a fixed current-limit set
point. Therefore, as the output voltage is adjusted down,
the available output power is reduced.
LINEAGE
R
Sx001A0C
Sx001A2B
Sx003A0A
Sx003A5F
adj
Module
−
Vin+
ON/OFF
Vin-
up
=
POWER
⎡
⎢
⎣
(
V
o
10,000
10,000
,
5110
5110
adj
G
G
Vout+
TRIM
Vout-
−
×
L
L
−
18-36Vdc & 36-75Vdc Input; 3.3-15Vdc Output; 1-3.5A Output Current
K
5110
5110
2050
2050
H
)
(continued)
−
H
R
⎤
⎥
⎦
adj-up
Ω
12.5
9.5
2.5
0.8
K
R
2.5
2.5
2.5
2.5
LOAD
L
SW/SC001/003 Series DC-DC Power Module:
Trim Examples
For SW003A0A, nominal 5.0V module. To trim module
down to 4.90V:
R
R
adj
adj
−
−
down
down
=
=
120
⎡
⎢
⎣
4 (
9 .
,
590
5 (
−
0 .
. 2
Ω
−
) 5
. 4
×
) 9
5110
−
2050
⎤
⎥
⎦
Ω
15