sp7600 Exar Corporation, sp7600 Datasheet - Page 10

• Manufacturer Part Number: sp7600
• Description: 2amp, 29v Buck Converter For Led Driver Applications
• Manufacturer: Exar Corporation

4. Schottky current rating If can be calculated from (5):
Voltage rating should be 30V. B340A rated at 30V/3A or equivalent can be used for its ample current
rating and low forward voltage.
5. Calculate Rs from (2):
Use the standard resistor value for Rs of 470ohms.
If
Rs
12/17/07 rev: A
EXAR RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET. CALL FOR UPDATES: 1-510-668-7000
≥
=
. 0
⎛
⎜
⎝
35
1
−
V
3
12
−
3 .
V
V
(
1
5 .
⎞
⎟
⎠
×
×
1
. 1
5 .
05
A
33
Figure 4 - Circuit schematic for design example
×
=
uA
. 2
1
3 .
25
A
A
×
. 0
095
Ohm
)
SP7600
=
10
424
Ohm
©Copyright 2007 Exar Corporation
SP7600