LM3519MKEV National Semiconductor, LM3519MKEV Datasheet - Page 13

• Manufacturer Part Number: LM3519MKEV
• Description: BOARD EVALUATION LM3519MK
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM3519MKEV

• Current - Output / Channel: 20mA
• Outputs And Type: 1, Non-Isolated
• Features: Dimmable
• Voltage - Input: 2.7 ~ 5.5V
• Utilized Ic / Part: LM3519
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Voltage - Output: -

Application Information
(Continued)
LAYOUT GUIDELINES
The input capacitor, C
, must be placed close to the
I
vs V
IN
OUT
IN
LM3519. Placing C
close to the device will reduce the
IN
metal trace resistance effect on input voltage ripple. Metal
trace connections for the C
capacitor can increase the
OUT
effective series resistance, which affects output voltage
ripple and efficiency. Trace connections to the inductor
should be short and wide to reduce power dissipation, in-
crease overall efficiency and reduce EMI radiation. The di-
ode, like the inductor, should have trace connections that are
short and wide to reduce power dissipation and increase
overall efficiency. For more details regarding layout guide-
lines for switching regulators, refer to Applications Note AN-
1149.
20160239
13
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