amc7135 ADD Microtech Inc., amc7135 Datasheet - Page 4

• Manufacturer Part Number: amc7135
• Description: 350ma Advanced Current Regulator
• Manufacturer: ADD Microtech Inc.

Output Capacitor C
AMC7135 is located in the same PCB, and the length of the routing path L1<10cm & L2<3cm, the output capacitor C
can be neglected.
output capacitor C
L2 is much longer than 3cm.
Copyright © 2007 ADDtek Corp.
GND
V
IN
The output capacitor C
If LED and AMC7135 is located in separate PCBs, or the length of the routing path L1>10cm or L2>3cm, the
C
1uF
PCB
IN
O
AMC7135
should be added. Typically, capacitance of 0.1uF ~ 1uF is recommended and 1uF is needed when
Length = L1
VDD
O
GND
and PCB layout:
O
may be removed under certain condition. Please refer to the following figure. If LED and
OUT
GND
V
APPLICATION INFORMATION
IN
C
0.1uF
1uF
1uF
O
C
|
IN
Length
= L2
PCB
AMC7135
4
Length = L1
VDD
GND
GND
V
OUT
IN
C
1uF
PCB
Length = L2
IN
PCB
AMC7135
Length = L1
VDD
GND
DD031_D -- OCTOBER 2007
AMC7135
OUT
C
0.1uF
Length
= L2
1uF
O
|
O