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LM3444MA/NOPB.B датащи(PDF) 3 Page - Texas Instruments

номер детали LM3444MA/NOPB.B
подробное описание детали  LM3444 AC-DC Offline LED Driver
PDF  38 Pages
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производитель  TI2 [Texas Instruments]
домашняя страница  https://www.ti.com
Logo TI2 - Texas Instruments

LM3444MA/NOPB.B датащи(HTML) 3 Page - Texas Instruments

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background image
1
4
3
2
10
7
8
9
ISNS
NC
GATE
NC
COFF
VCC
NC
NC
5
6
FILTER
GND
3
2
1
6
7
8
VCC
NC
NC
GND
COFF
FILTER
4
5
ISNS
GATE
LM3444
www.ti.com
SNVS682D – NOVEMBER 2010 – REVISED DECEMBER 2015
5 Pin Configuration and Functions
DGS Package
D Package
10-Pin VSSOP
8-Lead SOIC
Top View
Top View
Pin Functions
PIN
I/O
DESCRIPTION
NAME
VSSOP
SOIC
OFF time setting pin. A user set current and capacitor connected from the
COFF
4
8
I
output to this pin sets the constant OFF time of the switching controller.
Filter input. A low pass filter tied to this pin can filter a PWM dimming signal to
supply a DC voltage to control the LED current. Can also be used as an analog
FILTER
5
2
I
dimming input. If not used for dimming connect a 0.1-µF capacitor from this pin
to ground.
Power MOSFET driver pin. This output provides the gate drive for the power
GATE
8
5
O
switching MOSFET of the buck controller.
GND
6
3
—
Circuit ground connection
LED current sense pin. Connect a resistor from main switching MOSFET
ISNS
7
4
I
source, ISNS to GND to set the maximum LED current.
NC
1, 2, 3, 10
1, 7
—
No internal connection. Leave this pin open.
Input voltage pin. This pin provides the power for the internal control circuitry
VCC
9
6
O
and gate driver.
Copyright © 2010–2015, Texas Instruments Incorporated
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Product Folder Links: LM3444



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