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LM3281YFQR Datasheet(PDF) 3 Page - Texas Instruments |
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LM3281YFQR Datasheet(HTML) 3 Page - Texas Instruments |
3 / 26 page GND C2 C1 EN MODE B1 B2 SW A1 FB A2 LM3281 VIN EN MODE GND SW VIN FB A B C 1 2 LM3281 www.ti.com SNVSA38 – NOVEMBER 2014 5 Pin Configuration and Functions DSBGA (YFQ) 6 Pins Top Figure 1. Pin Out Pin Functions PIN TYPE DESCRIPTION NO. NAME Connect to the output at the output filter capacitor COUT by lowest inductance path with a A1 FB Power trace rated for 2 A. Connect to input filter capacitor CIN by lowest inductance path, then connect to supply A2 VIN Power voltage with a trace rated for 2 A. Selects automatic ECO/PWM mode or forced PWM mode. When MODE is HIGH the B1 MODE Logic LM3281 automatically transitions between PWM and ECO operation. When MODE is LOW the LM3281 operates in PWM mode only. Do not leave MODE pin floating. B2 SW Power Connect to inductor LSW with a trace rated for 2 A. Set this digital input logic high for normal operation. For shutdown, set to logic low. Do not C1 EN Logic leave EN pin floating. Connect to input filter capacitor CIN by lowest inductance path, then to system ground by a C2 GND Ground very low inductance path. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM3281 |
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