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LM3444MAX 数据表(PDF) 2 Page - Texas Instruments

部件名 LM3444MAX
功能描述  AC-DC Offline LED Driver
Download  30 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM3444MAX 数据表(HTML) 2 Page - Texas Instruments

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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
SNVS682C – NOVEMBER 2010 – REVISED MAY 2013
www.ti.com
Connection Diagrams
Figure 1. 10-Pin VSSOP (Top View)
Figure 2. 8-Lead SOIC (Top View)
See DGS Package
See D Package
PIN DESCRIPTIONS
VSSOP
SOIC
Name
Description
1
1
NC
No internal connection. Leave this pin open.
2
NC
No internal connection. Leave this pin open.
3
NC
No internal connection. Leave this pin open.
4
8
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.
5
2
FILTER
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 dimming input. If not used for dimming connect a
0.1µF capacitor from this pin to ground.
6
3
GND
Circuit ground connection.
7
4
ISNS
LED current sense pin. Connect a resistor from main switching MOSFET source, ISNS to GND to set the
maximum LED current.
8
5
GATE
Power MOSFET driver pin. This output provides the gate drive for the power switching MOSFET of the
buck controller.
9
6
VCC
Input voltage pin. This pin provides the power for the internal control circuitry and gate driver.
10
7
NC
No internal connection. Leave this pin open.
2
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Product Folder Links: LM3444


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