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LM3643 数据表(PDF) 3 Page - Texas Instruments |
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LM3643 数据表(HTML) 3 Page - Texas Instruments |
3 / 39 page Top View A1 A2 B1 B2 B3 Top View A3 C2 C1 C3 D2 D3 D1 Pin A1 LM3643, LM3643A www.ti.com SNVS967A – AUGUST 2014 – REVISED NOVEMBER 2014 7 Pin Configuration and Functions DSBGA 12 Pins Pin Functions PIN DESCRIPTION NUMBER NAME A1 GND Ground Input voltage connection. Connect IN to the input supply and bypass to GND with a 10-µF or larger A2 IN ceramic capacitor. A3 SDA Serial data input/output in the I2C Mode on LM3643. B1 SW Drain Connection for Internal NMOS and Synchronous PMOS Switches. Active high hardware flash enable. Drive STROBE high to turn on Flash pulse. Internal pulldown B2 STROBE resistor of 300 k Ω between STROBE and GND. B3 SCL Serial clock input for LM3643. C1 OUT Step-up DC/DC Converter Output. Connect a 10-µF ceramic capacitor between this terminal and GND. Active high enable pin. High = Standby, Low = Shutdown/Reset. Internal pulldown resistor of 300 k Ω C2 HWEN between HWEN and GND. C3 TORCH/TEMP Torch terminal input or threshold detector for NTC temperature sensing and current scale back. D1 LED2 High-side current source output for flash LED. Configurable dual polarity power amplifier synchronization input. Internal pulldown resistor of 300 k Ω D2 TX between TX and GND. D3 LED1 High-side current source output for flash LED. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM3643 LM3643A |
类似零件编号 - LM3643 |
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类似说明 - LM3643 |
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