SRAH-03C1A0R Bel Fuse Inc, SRAH-03C1A0R Datasheet - Page 5

• Manufacturer Part Number: SRAH-03C1A0R
• Description: CONV DC/DC 3A 3.3V .9-2.5VOUT SM
• Manufacturer: Bel Fuse Inc
• Series: xRAH-03Cr
• Type: Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr

Specifications of SRAH-03C1A0R

• Output: 0.9 ~ 2.5V
• Number Of Outputs: 1
• Power (watts): 8W
• Mounting Type: Surface Mount
• Voltage - Input: 3.3V
• Package / Case: 7-DIP SMD Module
• 1st Output: 0.9 ~ 2.5 VDC @ 3A
• Size / Dimension: 0.78" L x 0.70" W x 0.32" H (19.8mm x 17.8mm x 8.1mm)
• Power (watts) - Rated: 7.5W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 93%
• 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
3.3 Vdc Input
0.9 - 2.5
Vnom
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
2.5
1.8
1.5
1.2
0.9
R
R
trimdown
trimup
=
=
7.9117
4.6538
3.2633
1.8699
N/A
N/A
V
A
V
adj
nom
0.9 Vdc - 2.5 Vdc/3 A Output
−
C
A
−
V
V
nom
16.14
20.84
16.14
11.45
N/A
N/A
adj
B
−
−
D
B
3.712
3.712
3.712
3.712
3.712
3.712
C
1.54
11.5
16.2
11.5
6.81
33.2
D
Module
Module
Vo=2.505 V when Rtrim is open
Vo=1.803 V when Rtrim is open
Vo=1.503 V when Rtrim is open
Vo=1.203 V when Rtrim is open
Vo=0.903 V when Rtrim is open
Vo=0.9 V when Rtrim is open
GND
GND
Vout
Trim
Vout
Trim
Notes
Rtrimdown
Rtrimup