TPS2553DRVR Switches: Pinout, Equivalent and Datasheet

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The TPS2553DRVR is current-limited, power-distribution switch using N-channel MOSFETs for applications where short circuits or heavy capacitive loads will be encountered and provide up to 1.5 A of continuous load current. The device allows the user to program the current-limit threshold between 75 mA and 1.7 A (typ) via an external resistor. Current-limit accuracy as tight as ±6% can be achieved at the higher current-limit settings. The power-switch rise and fall times are controlled to minimize current surges during turn on/off. In the following articles, we will have a more detailed understanding of TPS2553DRVR model.

• Up to 1.5 A Maximum Load Current

• ±6% Current-Limit Accuracy at 1.7 A (typ)

• Meets USB Current-Limiting Requirements

• Backwards Compatible with TPS2550/51

• Adjustable Current Limit, 75 mA–1300 mA (typ)

• Constant-Current (TPS2552/53) and Latch-off (TPS2552-1/53-1) Versions

• Fast Overcurrent Response - 2-μs (typ)

• 85-mΩ High-Side MOSFET (DBV Package)

• Reverse Input-Output Voltage Protection

• Operating Range: 2.5 V to 6.5 V

• Built-in Soft-Start

• 15 kV ESD Protection per IEC 61000-4-2 (with External Capacitance)

• UL Listed–File No. E169910 and NEMKO IEC60950-1-am1 ed2.0

Texas Instruments TPS2553DRVR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments TPS2553DRVR.

About TPS2553DRVR, Additional device shutdown features include overtemperature protection and reverse-voltage protection. The device incorporates an internal charge pump and gate drive circuitry necessary to drive the N-channel MOSFET. The charge pump supplies power to the driver circuit and provides the necessary voltage to pull the gate of the MOSFET above the source. The charge pump operates from input voltages as low as 2.5 V and requires little supply current. The driver controls the gate voltage of the power switch. The driver incorporates circuitry that controls the rise and fall times of the output voltage to limit large current and voltage surges and provides built-in soft-start functionality. 

The TPS2553DRVR responds to overcurrent conditions by limiting their output current to the IOS levels. When an overcurrent condition is detected, the device maintains a constant output current and reduces the output voltage accordingly. Two possible overload conditions can occur. The first condition is when a short circuit or partial short circuit is present when the device is powered-up or enabled. The second condition is when a short circuit, partial short circuit, or transient overload occurs while the device is enabled and powered on. The TPS2553DRVR thermal cycles if an overload condition is present long enough to activate thermal limiting in any of the above cases. The device turns off when the junction temperature exceeds 135 ℃ (typ) while in current limit. The device remains off until the junction temperature cools 10 ℃ (typ) and then restarts. The reverse-voltage protection feature turns off the N-channel MOSFET whenever the output voltage exceeds the input voltage by 135 mV (typ) for 4-ms (typ). A reverse current of (VOUT – VIN)/rDS(on)) will be present when this occurs. This prevents damage to devices on the input side of the TPS2552/53 and TPS2552-1/TPS2253-1 by preventing significant current from sinking into the input capacitance. The TPS2552/53 devices allow the N-channel MOSFET to turn on once the output voltage goes below the input voltage for the same 4-ms deglitch time. The TPS2552-1/53-1 devices keep the device turned off even if the reverse-voltage condition is removed and do not allow the N-channel MOSFET to turn on until power is cycled or the device enable is toggled.

There are two device families that handle overcurrent situations differently. The TPS2552/53 family enters constant-current mode while the TPS2552-1/53-1 family latches off when the load exceeds the current-limit threshold. TPS2553 devices limit the output current to a safe level by using a constant-current mode when the output load exceeds the current-limit threshold. An internal reverse-voltage comparator disables the power switch when the output voltage is driven higher than the input to protect devices on the input side of the switch.

FUNCTIONAL BLOCK DIAGRAM

• USB Ports/Hubs

• Digital TV

• Set-Top Boxes

• VOIP Phones

• Two-Level Current-Limit Circuit

• Auto-Retry Functionality

• Typical Application as USB Power Switch

• Universal Serial Bus (USB) Power-Distribution Requirements

Package Outline WSON - 0.8 mm max height

Package 6-Pin WSON Top View

GENERIC PACKAGE VIEW

Exposed Thermal Pad Dimensions

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