Texas Instruments LM3444 A19 Edison Retrofit LED Driver (no dim) Evaluation Board LM3444-EDSNEV/NOPB LM3444-EDSNEV/NOPB 데이터 시트
제품 코드
LM3444-EDSNEV/NOPB
1
4
3
2
10
7
8
9
I
SNS
NC
GATE
NC
COFF
V
CC
NC
NC
5
6
FILTER
GND
Pin-Out
4
Pin-Out
Figure 1. 10-Pin VSSOP
Table 1. Pin Description 10 Pin VSSOP
Pin #
Name
Description
1
NC
No internal connection.
2
NC
No internal connection.
3
NC
No internal connection.
4
COFF
OFF time setting pin. A user set current and capacitor connected from the output to this pin sets the
constant OFF time of the switching controller.
constant OFF time of the switching controller.
5
FILTER
Filter input. A capacitor tied to this pin filters the error amplifier. Could also be used as an analog dimming
input.
input.
6
GND
Circuit ground connection.
7
ISNS
LED current sense pin. Connect a resistor from main switching MOSFET source, ISNS to GND to set the
maximum LED current.
maximum LED current.
8
GATE
Power MOSFET driver pin. This output provides the gate drive for the power switching MOSFET of the
buck controller.
buck controller.
9
V
CC
Input voltage pin. This pin provides the power for the internal control circuitry and gate driver.
10
NC
No internal connection.
3
SNVA455C – August 2010 – Revised May 2013
AN-2083 LM3444 A19 Edison Retrofit Evaluation Board
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