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LM3444MAX 数据表(PDF) 2 Page - Texas Instruments |
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LM3444MAX 数据表(HTML) 2 Page - Texas Instruments |
2 / 30 page 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 Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated Product Folder Links: LM3444 |
类似零件编号 - LM3444MAX |
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类似说明 - LM3444MAX |
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