LC101N datasheet(10/15 Pages) SANKEN

10 / 15 page

LC101N

LC101N-DSE Rev.1.0

SANKEN ELECTRIC CO.,LTD

Nov.19, 2015

http://www.sanken-ele.co.jp/en/

12.2 Pattern Layout

12.2.1 PCB Trace Layout and Component

Placement

● Setup resistance, R1, should be as close to the FB pin

and the LO pin as possible as shown in Figure 12-1.

● The layout between the FB pin and the LED string

should be avoided to parallel with switching trace.

Noise is superimposed to the FB pin by induction, the

LC101N might be malfunction.

LED

LC101N

R1 should be as close to the

FB pin and the LO pin.

LED1

Figure 12-1 Important locations of the pattern layout

12.2.2 Pattern Layout Example

Figure 12-2 shows the pattern layout example, and

Table 12-1 shows this PCB information.

Table 12-1 PCB information of pattern layout example

Items

Information

PCB type

double-sided

Size(Outline)

40 mm × 40 mm

Substrate thickness

t = 1.6 mm

Copper foil thickness

35 μm

(A) Top View

(B) Bottom View

Figure 12-2 Pattern layout example

LED

LC101N

Power supply

(+)

*Ground of power supply is LO pin

1pin→

LED

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