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LM26420 数据表(PDF) 5 Page - Texas Instruments |
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LM26420 数据表(HTML) 5 Page - Texas Instruments |
5 / 47 page 5 LM26420, LM26420-Q0, LM26420-Q1 www.ti.com SNVS579K – FEBRUARY 2009 – REVISED APRIL 2016 Product Folder Links: LM26420 LM26420-Q0 LM26420-Q1 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Pin Functions 20-Pin HTSSOP PIN TYPE DESCRIPTION NUMBER NAME 1 VINC A Input supply for control circuitry. 2 EN1 A Enable control input. Logic high enable operation for Buck 1. Do not allow this pin to float or be greater than VIN + 0.3 V. 3, 4 VIND1 A Power Input supply for Buck 1. 5 SW1 P Output switch for Buck 1. Connect to the inductor. 6,7 PGND1 G Power ground pin for Buck 1. 8 FB1 A Feedback pin for Buck 1. Connect to external resistor divider to set output voltage. 9 PG1 G Power Good Indicator for Buck 1. Pin is connected through a resistor to an external supply (open drain output). 10, 11, DAP Die Attach Pad — Connect to system ground for low thermal impedance, but it cannot be used as a primary GND connection. 12 PG2 G Power Good Indicator for Buck 2. Pin is connected through a resistor to an external supply (open drain output). 13 FB2 A Feedback pin for Buck 2. Connect to external resistor divider to set output voltage. 14, 15 PGND2 G Power ground pin for Buck 2. 16 SW2 P Output switch for Buck 2. Connect to the inductor. 17, 18 VIND2 A Power Input supply for Buck 2. 19 EN2 A Enable control input. Logic high enable operation for Buck 2. Do not allow this pin to float or be greater than VIN + 0.3 V. 20 AGND G Signal ground pin. Place the bottom resistor of the feedback network as close as possible to pin. |
类似零件编号 - LM26420_16 |
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类似说明 - LM26420_16 |
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