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TPS54394 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS54394 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 28 page SW1 VIN1 VBST 1 EN1 VFB2 VFB1 GND VREG5 PGND1 6 VIN2 VBST2 EN2 SW 2 PG1 5 1 3 PG2 9 10 11 PGND 2 2 4 7 13 12 14 8 15 16 TPS54394 HTSSOP16 (PowerPAD) PowerPAD VFB1 VFB2 VIN1 VBST2 VBST1 14 7 5 6 2 3 4 1 VIN2 13 12 11 9 8 10 GND 16 15 VREG5 TPS54394 www.ti.com SLVSBE6B – JUNE 2012 – REVISED AUGUST 2013 DEVICE INFORMATION HTSSOP PACKAGE RSA PACKAGE (TOP VIEW) (TOP VIEW) PIN FUNCTIONS(1) PIN I/O DESCRIPTION NAME PWP RSA VIN1 1 3 I Power inputs and connects to both high side NFET drains. Supply Input for 5.5 V linear regulator. VIN2 16 2 I VBST1 2 4 I Supply input for high-side NFET gate drive circuit. Connect 0.1 µF ceramic capacitor between VBSTx and SWx pins. An internal diode is connected between VREG5 and VBST2 15 1 I VBSTx SW1 3 5 I/O Switch node connections for both the high-side NFETs and low–side NFETs. Input of current comparator. SW2 14 16 I/O PGND1 4 6 I/O Ground returns for low-side MOSFETs. Input of current comparator. PGND2 13 15 I/O EN1 5 7 I Enable. Pull High to enable according converter. EN2 12 14 I PG1 6 8 O Open drain power good output. Low means the output voltage of the corresponding output is out of regulation. PG2 11 13 O VFB1 7 9 I D-CAP2 feedback inputs. Connect to output voltage with resistor divider. VFB2 10 12 I GND 8 10 I/O Signal GND. Connect sensitive SSx and VFBx returns to GND at a single point. Output of 5.5 V linear regulator. Bypass to GND with a high-quality ceramic capacitor of VREG5 9 11 O at least 1 µF. VREG5 is active when ENx is high. Exposed Thermal Back Back Thermal pad of the package. Must be soldered to achieve appropriate dissipation. Must I/O Pad side side be connected to GND. (1) x means either 1 or 2, that is, VFBx means VFB1 or VFB2. Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links :TPS54394 |
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