SRAH-12F250R Bel Fuse Inc, SRAH-12F250R Datasheet - Page 4

• Manufacturer Part Number: SRAH-12F250R
• Description: CONV DC/DC 12A 3.6-5.5V 2.5VO SM
• Manufacturer: Bel Fuse Inc
• Series: xRAH-12Fxx0r
• Type: Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr

Specifications of SRAH-12F250R

• Output: 2.5V
• Number Of Outputs: 1
• Power (watts): 30W
• Mounting Type: Surface Mount
• Voltage - Input: 3.6 ~ 5.5V
• Package / Case: 7-DIP SMD Module
• 1st Output: 2.5 VDC @ 12A
• Size / Dimension: 0.78" L x 0.70" W x 0.32" H (19.8mm x 17.8mm x 8.1mm)
• Power (watts) - Rated: 30W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 89%
• Approvals: cUL, UL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -

Output Trim Equations
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between
the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of
the resistors should be used for any given application.
NON-ISOLATED DC/DC CONVERTERS
3.0 Vdc - 5.5 Vdc Input
R
R
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
TrimUp
TrimDown
Vnom
3.3
2.5
1.8
1.5
1.2
1.0
=
=
V
adj
V
nom
C
−
161.391
111.674
V
68.576
50.000
31.240
18.850
A
−
nom
A
V
1.0 Vdc - 3.3 Vdc/12 A Output
adj
−
−
D
B
161.900
208.900
287.900
287.900
208.900
161.900
B
Module
Module
43.330
43.330
43.330
43.330
43.330
43.330
C
GND
GND
Vout
Trim
Vout
Trim
100.000
147.000
226.000
226.000
147.000
100.000
Rtrimdown
Rtrimup
D