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TPS54526 Fiches technique(PDF) 5 Page - Texas Instruments |
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TPS54526 Fiches technique(HTML) 5 Page - Texas Instruments |
5 / 28 page POWER PAD SW1 VBST SS VO VFB GND PGND1 14 7 5 6 2 3 4 1 VIN2 EN PG VREG5 13 12 11 9 8 PGND2 10 SW2 VIN1 VBST SW3 SW1 SW2 VFB VREG5 GND SS POWER PAD 16 7 5 6 2 3 4 1 15 12 11 9 8 10 14 13 TPS54526 www.ti.com SLVSB84 – MAY 2012 DEVICE INFORMATION RSA PACKAGE (TOP VIEW) PWP PACKAGE (TOP VIEW) PIN FUNCTIONS PIN DESCRIPTION NAME NUMBER PWP 14 RSA 16 VO 1 16 Connect to output of converter. This pin is used for output discharge function. VFB 2 1 Converter feedback input. Connect to output voltage with feedback resistor divider. 5.5 V power supply output. A capacitor (typical 1 µF) should be connected to GND. VREG5 is not VREG5 3 2 active when EN is low. SS 4 3 Soft-start control. An external capacitor should be connected to GND. GND 5 4 Signal ground pin. PG 6 5 Open drain power good output. EN 7 6 Enable control input. EN is active high and must be pulled up to enable the device. PGND1, Ground returns for low-side MOSFET. Also serve as inputs of current comparators. Connect 8, 9 7, 8 PGND2 PGND and GND strongly together near the IC. SW1, SW2, Switch node connection between high-side NFET and low-side NFET. Also serve as inputs to 10, 11 9, 10, 11 SW3(1) current comparators. Supply input for high-side NFET gate driver (boost terminal). Connect capacitor from this pin to VBST 12 12 respective SW1, SW2 terminals. An internal PN diode is connected between VREG5 to VBST pin. VIN1, VIN2, Power input and connected to high side NFET drain. Supply input for 5-V internal linear regulator 13, 14 13, 14, 15 VIN3(1) for the control circuitry. Thermal pad of the package. Must be soldered to achieve appropriate dissipation. Should be PowerPAD™ Back side Back side connected to PGND. (1) SW3, VIN3 applies to 16 pin package only. Copyright © 2012, Texas Instruments Incorporated 5 Product Folder Link(s) :TPS54526 |
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