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TPS254900AIRVCTQ1 Datasheet(PDF) 3 Page - Texas Instruments

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Part No. TPS254900AIRVCTQ1
Description  Automotive USB Host Charger With Short-to-VBATT Protection
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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TPS254900AIRVCTQ1 Datasheet(HTML) 3 Page - Texas Instruments

 
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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
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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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