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LM3243 Scheda tecnica(PDF) 3 Page - Texas Instruments |
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LM3243 Scheda tecnica(HTML) 3 Page - Texas Instruments |
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3 / 32 page  4 3 2 1 A B C D ACB ACB BGND FB PVIN PVIN BP MODE SW SW EN VCON PGND PGND SGND VDD 4 3 2 1 A B C D ACB ACB BGND FB PVIN PVIN BP MODE SW SW EN VCON PGND PGND SGND VDD Top View Bottom View LM3243 www.ti.com SNVS782C – OCTOBER 2010 – REVISED AUGUST 2015 5 Pin Configuration and Functions TMD Package 16-Pin DSBGA Pin Functions PIN TYPE DESCRIPTION NO. NAME A1 PGND Ground Power ground to the internal NFET switch. B1 C1 SGND Ground Signal analog and control ground (low current). D1 VDD Power Analog supply input. A2 Switching node connection to the internal PFET switch and NFET synchronous rectifier. Connect SW Analog to an inductor with a saturation current rating that exceeds the ILIM,PFET,Steady State current limit B2 specification of the LM3243. Enable input. Set this digital input HIGH for normal operation. For shutdown, set low. Pin has an C2 EN Digital/Input 800-k Ω internal pulldown resistor. D2 VCON Analog Voltage control analog input. VOUT = 2.5 × VCON. A3 PVIN Power Power supply voltage input to the internal PFET switch and ACB. B3 Bypass mode input. Set the pin HIGH for forced Bypass mode operation. Set the pin LOW for C3 BP Digital automatic analog bypass mode (recommended). PWM/PFM mode selection input. Setting the pin HIGH allows for PFM or PWM, depending on D3 MODE Digital/Input the load current. Setting the pin LOW forces the part to be in PWM only. A4 ACB Output Analog Current Bypass (ACB). Connect to the output at the output filter capacitor. B4 C4 BGND Ground ACB ground (high current). D4 FB Analog Feedback analog input. Connect to the output at the output filter capacitor. Copyright © 2010–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM3243 |
Codice articolo simile - LM3243_16 |
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Descrizione simile - LM3243_16 |
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