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TPS254900A-Q1 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS254900A-Q1 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 39 page  Thermal Pad 1 IMON 2 IN 3 IN 4 DM_OUT 5 DP_OUT 6 CS 11 GND 12 BIAS 13 DP_IN 14 DM_IN 15 OUT 16 OUT Not to scale 3 TPS254900A-Q1 www.ti.com SLUSCU5A – NOVEMBER 2017 – REVISED JANUARY 2018 Product Folder Links: TPS254900A-Q1 Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated (1) I = Input, O = Output, I/O = Input and output, PWR = Power 5 Pin Configuration and Functions RVC Package 20-Pin WQFN Top View Pin Functions PIN TYPE(1) DESCRIPTION NAME NO. BIAS 12 PWR Used for IEC protection. Typically, connect a 2.2-µF capacitor and a transient-voltage suppressor (TVS) to ground and 5.1 kΩ to OUT. CS 6 O Linear cable compensation current. Connect to divider resistor of front-end dc-dc converter. CTL1 8 I Logic-level control input for controlling the charging mode and the signal switches; see the Device Truth Table (TT). CTL2 9 I Logic-level control input for controlling the charging mode and the signal switches; see the Device Truth Table (TT). DM_IN 14 I/O D– data line to downstream connector DM_OUT 4 I/O D– data line to upstream USB host controller DP_IN 13 I/O D+ data line to downstream connector DP_OUT 5 I/O D+ data line to upstream USB host controller EN 7 I Logic-level control input for turning the power and signal switches on or off. When EN is low, the device is disabled, and the signal and power switches are OFF. FAULT 18 O Active-low, open-drain output, asserted during overtemperature, overcurrent, and overvoltage conditions. GND 11 — Ground connection; should be connected externally to the thermal pad. ILIM_HI 20 I External resistor used to set the high current-limit threshold. ILIM_LO 19 I External resistor used to set the low current-limit threshold and the load-detection current threshold. IMON 1 O This pin sources a scaled-down ratio of current through the internal FET. A resistor from this pin to GND converts current to proportional voltage; used as an analog current monitor. IN 2,3 PWR Input supply voltage; connect a 0.1-µF or greater ceramic capacitor from IN to GND as close to the IC as possible. OUT 15,16 PWR Power-switch output |
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