SRAH-02A5000 Bel Fuse Inc, SRAH-02A5000 Datasheet - Page 16

• Manufacturer Part Number: SRAH-02A5000
• Description: CONV DC/DC 2A 12V 5V SMD
• Manufacturer: Bel Fuse Inc
• Series: SRAH-02Ar
• Type: Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr

Specifications of SRAH-02A5000

• Output: 5V
• Number Of Outputs: 1
• Power (watts): 10W
• Mounting Type: Surface Mount
• Voltage - Input: 12V
• Package / Case: 7-DIP SMD Module
• 1st Output: 5 VDC @ 2A
• Size / Dimension: 0.78" L x 0.70" W x 0.32" H (19.8mm x 17.8mm x 8.1mm)
• Power (watts) - Rated: 10W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 89%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• Other names: SRAH-02A500

Output Voltage Set-Point Adjustment
xRAH-02A1Ax Trim Resistor Calculation
Rtrim up =
Note: Output voltage Vo=0.90 3V when trim pin is not connected.
page 16
BP05xRAH-02A
©2005 Bel Fuse Inc.
POWER PRODUCTS
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
(
Specifications subject to change without notice. 03.05
Vo, adj – Vo
3.712
GND
T
GND
V
T
rim
V
O
rim
O
)
Kohm
R
R
set
s
R
NON-ISOLATED DC/DC CONVERTERS
t
12V Input / 0.9V – 5.0V Output / 2A
R
R
down
up
Rdown =
V
t
Note: Output voltage Vo=0.90 3V when trim pin is not connected.
Note: Output voltage Vo=0.90 3V when trim pin is not connected.
Rtrimup V adj_up
Rup =
Margin down value after output volatge is set with Rset
Rt (Kohm) =
Margin up value after output voltage is set with Rset
(
(
0.903 Rset + 3.712 - Rset • Vm down
4.64 Rset • Vm down - 3.712 Rset
(
50
)
0
Rset • Vm up - 0.903 Rset - 3.712
50
45
40
35
30
25
20
15
10
Rset =
5
0
0.9 1.17 1.45 1.72 1.99 2.26 2.54 2.81 3.08 3.36 3.63
0.9
Vout is desired output voltage.
(
Vm down > 90% Vout
(
3.712 - Rs(Vout - 0.903)
Vout - 0.903
3.712 Rset
Rs (4.64Vt - 3.712)
Adjuste d output voltag e Vo,adj(V )
3.712
V adj_up
)
Kohm
)
)
)
Kohm
Kohm
Kohm
3.63