TPS22965NQWDSGRQ1 On-Resistance Load Switch: Circuit, Pinout, and Datasheet

The TPS22965NQWDSGRQ1 is a single-channel load switch with a controlled turn-on that is compact and ultralow RON. An N-channel MOSFET  is included in the device, which can function between 0.8 and 5.5 V and sustain a maximum continuous current of 4A. The rising time of VOUT can be adjusted to reduce the inrush current. When the switch is switched off, the TPS22965NQWDSGRQ1 device has a 225-ohm on-chip load resistor for rapid output discharge.

The TPS22965NQWDSGRQ1 device comes in a 2-mm * 2-mm 8-pin WSON package (DSG0008A) with an integrated thermal pad for high power dissipation. The TPS22965NQWDSGRQ1 device is designed to operate in a temperature range of –40°C to 105°C in free air.

The following figure is TPS22965NQWDSGRQ1 Pinout.

Pinout

The followings are TPS22965NQWDSGRQ1 Symbol, Footprint and 3D Model.

Symbol

Footprint

3D Model

• Qualified for Automotive Applications

– AEC-Q100 Qualified

– Device Temperature Grade 2: –40°C to +105°C

– Device HBM ESD Classification Level 3A

– Device CDM ESD Classification Level C6

• Functional safety capable

– Documentation available to aid functional safety system design

• Integrated Single Channel Load Switch

• Input Voltage Range: 0.8 V to 5.5 V • Ultra-Low On Resistance (RON) – RON = 16 mΩ at  VIN  = 5 V (VBIAS = 5 V)

– RON = 16 mΩ at VIN = 3.6 V (VBIAS = 5 V)

– RON = 16 mΩ at VIN = 1.8 V (VBIAS = 5 V)

• 4-A Maximum Continuous Switch Current

• Low Quiescent Current (50 µA)

• Low Control Input Threshold Enables Use of 1.2-, 1.8-, 2.5- and 3.3-V Logic

• Configurable  Rise Time 

• Quick Output Discharge (QOD)

• WSON 8-pin Package with Thermal Pad

The TPS22965NQWDSGRQ1 Functional Block Diagram is shown as follows.

Functional Block Diagram

The TPS22965NQWDSGRQ1 Test Circuit is shown as follows.

Test Circuit

This application demonstrates how the TPS22965NQWDSGRQ1 can be used to power downstream modules.

Schematic for Powering a Downstream Module

The following shows the TPS22965NQWDSGRQ1 Simplified Schematic.

Simplified Schematic

All traces must be as brief as possible for optimal performance. In order to reduce the impacts of parasitic trace inductances on normal operation, the input and output capacitors must be located close to the device. The use of large traces for VIN, VOUT, and GND reduces parasitic electrical effects while also lowering case-to-ambient thermal impedance. To avoid parasitic capacitance, the CT trace must be as short as feasible.

Layout

• Automotive Electronics

• Infotainment

• ADAS (Advanced Driver Assistance Systems)

The TPS22965NQWDSGRQ1 Package is shown as follows.

Package

Texas Instruments Incorporated (TI) is an American technology corporation based in Dallas, Texas, that creates and manufactures semiconductors and integrated circuits for electronic designers and manufacturers around the world. Based on sales volume, it is one of the top ten semiconductor businesses in the world. Analog chips and embedded processors, which account for more than 80% of the company's revenue, are the company's main focus. TI also makes calculators, microcontrollers, and multi-core processors, as well as TI digital light processing technologies and education technology.