TPS2546RTET.A中文资料德州仪器数据手册PDF规格书

1 Features

1• D+/D– CDP/DCP Modes per USB Battery

Charging Specification 1.2

• D+/D– Shorted Mode per Chinese

Telecommunication Industry Standard YD/T

1591-2009

• Supports Non-BC1.2 Charging Modes by

Automatic Selection:

– D+/D– Divider Modes 2 V/2.7 V and 2.7 V/2 V

– D+/D– 1.2-V Mode

• Supports Sleep-Mode Charging and

Mouse/Keyboard Wakeup

• Automatic SDP/CDP Switching for Devices That

Do Not Connect to CDP Ports

• Load Detection for Power Supply Control in S4/S5

Charging and Port Power Management in All

Charge Modes

• Compatible With USB 2.0 and 3.0 Power Switch

Requirements

• Integrated 73-mΩ (Typical) High-Side MOSFET

• Adjustable Current-Limit up to 3 A (Typical)

• Operating Range: 4.5 V to 5.5 V

• Max Device Current:

– 2 μA When Device Disabled

– 270 μA When Device Enabled

• Drop-In and BOM Compatible With TPS2543

• Available in 16-Pin WQFN (3.00 mm × 3.00 mm)

Package

• 8-kV ESD Rating on DM/DP Pins

• UL Listed File No. E169910 and CB certified

2 Applications

• USB Ports (Host and Hubs)

• Notebook and Desktop PCs

• Universal Wall-Charging Adapters

3 Description

The TPS2546 is a USB charging port controller and

power switch with an integrated USB 2.0 high-speed

data line (D+/D–) switch. TPS2546 provides the

electrical signatures on D+/D– to support charging

schemes listed under Feature Description. TI tests

charging of popular mobile phones, tablets, and

media devices with the TPS2546 to ensure

compatibility with both BC1.2 compliant, and non-

BC1.2 compliant devices.

In addition to charging popular devices, the TPS2546

also supports two distinct power management

features, namely, power wake and port power

management (PPM) through the STATUS pin. Power

wake allows for power supply control in S4/S5

charging and PPM the ability to manage port power in

a multi-port application. Additionally, system wake up

(from S3) with a mouse/keyboard (both low speed

and full speed) is fully supported in the TPS2546.

The TPS2546 73-mΩ power-distribution switch is

intended for applications where heavy capacitive

loads and short-circuits are likely to be encountered.

Two programmable current thresholds provide

flexibility for setting current limits and load detect

thresholds.