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TPS2514ADBVT Datasheet(PDF) 11 Page - Texas Instruments

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No. de pieza TPS2514ADBVT
Descripción Electrónicos  USB Dedicated Charging Port Controller
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

TPS2514ADBVT Datasheet(HTML) 11 Page - Texas Instruments

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D-
D+
GND
VBUS
5 V
1.2 V
2.7V
2.0V
S1
S2
S3
S4
DP1
DM1
GND
TPS2513, TPS2514
Divider 2
S1, S2: ON
S3, S4: OFF
Short Mode
S4 ON
S1, S2, S3: OFF
1.2V on DP1 and DM1
S3, S4: ON
S1, S2: OFF
D-
D+
GND
VBUS
200
Ÿ (max)
5.0 V
1.2 V
TPS2513, TPS2513A
TPS2514, TPS2514A
www.ti.com
SLVSBY8B – MAY 2013 – REVISED SEPTEMBER 2013
Applying 1.2 V to the D+ Line and 1.2 V to the D– Line
As shown in Figure 12, some tablet USB chargers require 1.2 V on the shorted data lines of the USB connector.
The maximum resistance between the D+ line and the D- line is 200
Ω.
Figure 12. DCP Applying 1.2 V to the D+ Line and 1.2 V to the D– Line
The devices are USB dedicated charging port (DCP) controllers. Applications include vehicle power charger, wall
adapters with USB DCP and other USB chargers. The device DCP controllers have the auto-detect feature that
monitors the D+ and D– line voltages of the USB connector, providing the correct electrical signatures on the DP
and DM pins for the correct detections of compliant portable devices to fast charge. These portable devices
include smart phones, 5-V tablets and personal media players.
DCP Auto-Detect
The devices integrate an auto-detect feature to support divider mode, short mode and 1.2 V / 1.2 V modes. If a
divider device is attached, 2.7 V is applied to the DP pin and 2 V is applied to the DM pin. If a BC1.2-compliant
device is attached, the TPS2513 and TPS2514 automatically switches into short mode. If a device compliant with
the 1.2 V / 1.2 V charging scheme is attached, 1.2 V is applied on both the DP pin and the DM pin. The
functional diagram of DCP auto-detect feature (DM1 and DP1) is shown in Figure 13. DCP auto-detect feature
(DM2 and DP2 of TPS2513) has the same functional configuration. For TPS2513A and TPS2514A, the devices
also have DCP auto-detect feature and the auto-detect have the same functional configuration expect for the
default mode is Divider 3 (D+/D- = 2.7V / 2.7V).
Figure 13. TPS2513 and TPS2514 DCP Auto-Detect Functional Diagram
Undervoltage Lockout (UVLO)
The undervoltage lockout (UVLO) circuit disables DP1, DM1, DP2 and DM2 output voltage until the input voltage
reaches the UVLO turn-on threshold. Built-in hysteresis prevents unwanted oscillations due to input voltage drop
from large current surges.
Copyright © 2013, Texas Instruments Incorporated
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Product Folder Links: TPS2513 TPS2513A TPS2514 TPS2514A


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