TPS22918TDBVRQ1 On-Resistance Load Switch: Schematic, Pinout, and Datasheet

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Published: 02 April 2022 | Last Updated: 02 April 2022

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TPS22918TDBVRQ1

TPS22918TDBVRQ1

Texas Instruments

N-Channel 0.95mm PMIC Automotive, AEC-Q100 Series TPS22918 6 Pin SOT-23-6

Purchase Guide

N-Channel 0.95mm PMIC Automotive, AEC-Q100 Series TPS22918 6 Pin SOT-23-6

The TPS22918-Q1 is a 6-pin SOT-23 load switch with a 5.5-V, 2-A rating. This article mainly introduces Schematic, Pinout, Datasheet and other detailed information about Texas Instruments TPS22918TDBVRQ1.

This video will show you a specialized kind of Analog Switch called the Load Switch and the many special power-control features it can provide.

Episode 10: Load Switches Ahead

TPS22918TDBVRQ1 Description

The TPS22918TDBVRQ1 is a 6-pin SOT-23 load switch with a 5.5-V, 2-A rating. The device uses a low resistance N-channel MOSFET to reduce voltage drop for low voltage and high current rails, lowering the drop out voltage through the device.

The device includes a slew rate that may be adjusted to help decrease or eliminate power supply droop caused by excessive inrush currents. The device also has a QOD pin, which can be used to set the VOUT discharge rate once the switch is turned off. The device features very low leakage currents during shutdown, which reduces unwanted leakages for downstream modules during standby. External components are eliminated due to the integrated control logic, driver, charge pump, and output discharge  FET, resulting in a smaller solution and lower bill of materials (BOM) count.

The device's adjustable rise time minimizes inrush current induced by large bulk load capacitances, lowering or eliminating power supply droop. The TPS22918TDBVRQ1  has a customizable rapid output discharge (QOD) pin that adjusts the device's fall time, allowing for design flexibility in terms of power down and sequencing.

The TPS22918TDBVRQ1 is packaged in a tiny, leaded SOT-23 package (DBV) that allows solder joints to be visually inspected. The gadget is designed to operate in a temperature range of –40°C to +105°C in free air.


TPS22918TDBVRQ1 Pinout

The following figure is TPS22918TDBVRQ1 Pinout.

pinout.jpg

Pinout

Pin NumberPin NameDescription
1VINSwitch input. Place ceramic bypass capacitor(s) between this pin and GND.
2GNDDevice ground
3ONActive high switch control input. Do not leave floating
4CTSwitch slew rate control. Can be left floating.
5QODQuick Output Discharge pin. This functionality can be enabled in one of three ways
• Placing an external resistor between VOUT and QOD
• Tying QOD directly to VOUT and using the internal resistor value (RPD)
• Disabling QOD by leaving pin disconnected
6VOUTSwitch output


TPS22918TDBVRQ1 CAD Model

The followings are TPS22918TDBVRQ1 Symbol, Footprint and 3D Model.

symbol.png

Symbol

footprint.png

Footprint

3d model.jpg

3D Model


TPS22918TDBVRQ1 Features

• AEC-Q100 Qualified

• Integrated single-channel load switch

• Qualified for automotive applications:

– Device Temperature Grade 2: –40°C to +105°C ambient operating temperature range

• Functional safety capable

– Documentation available to aid functional safety system design

• Input voltage range: 1 V to 5.5 V

• Low On-Resistance (RON) – RON = 52 mΩ (typical) at  VIN  = 5 V – RON = 53 mΩ (typical) at VIN = 3.3 V

• 2-A Maximum continuous switch current

• Low quiescent current

– 8.3 µA (typical) at VIN = 3.3 V • Low-control input-threshold enables use of 1 V or higher GPIO

• Configurable Quick-Output Discharge (QOD)

• Configurable rise time with CT pin

• Small SOT23-6 package (DBV)

– 2.9 mm × 2.8 mm, 0.95-mm Pitch, 1.45-mm height (with leads)

• ESD Performance tested per AEC Q100

– ±2-kV HBM and ±750-V CDM


Specifications

Texas Instruments TPS22918TDBVRQ1 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments TPS22918TDBVRQ1.
  • Type
    Parameter
  • Lifecycle Status

    Lifecycle Status refers to the current stage of an electronic component in its product life cycle, indicating whether it is active, obsolete, or transitioning between these states. An active status means the component is in production and available for purchase. An obsolete status indicates that the component is no longer being manufactured or supported, and manufacturers typically provide a limited time frame for support. Understanding the lifecycle status is crucial for design engineers to ensure continuity and reliability in their projects.

    ACTIVE (Last Updated: 5 days ago)
  • Factory Lead Time
    6 Weeks
  • Mounting Type

    The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.

    Surface Mount
  • Package / Case

    refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.

    SOT-23-6
  • Surface Mount

    having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.

    YES
  • Number of Pins
    6
  • Operating Temperature

    The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.

    -40°C~105°C TA
  • Packaging

    Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.

    Tape & Reel (TR)
  • Series

    In electronic components, the "Series" refers to a group of products that share similar characteristics, designs, or functionalities, often produced by the same manufacturer. These components within a series typically have common specifications but may vary in terms of voltage, power, or packaging to meet different application needs. The series name helps identify and differentiate between various product lines within a manufacturer's catalog.

    Automotive, AEC-Q100
  • JESD-609 Code

    The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.

    e3
  • Pbfree Code

    The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.

    yes
  • Part Status

    Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.

    Active
  • Moisture Sensitivity Level (MSL)

    Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures

    3 (168 Hours)
  • Number of Terminations
    6
  • ECCN Code

    An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.

    EAR99
  • Terminal Finish

    Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.

    Matte Tin (Sn)
  • Terminal Position

    In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.

    DUAL
  • Terminal Form

    Occurring at or forming the end of a series, succession, or the like; closing; concluding.

    GULL WING
  • Number of Functions
    1
  • Terminal Pitch

    The center distance from one pole to the next.

    0.95mm
  • Base Part Number

    The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.

    TPS22918
  • Number of Outputs
    1
  • Output Type

    The "Output Type" parameter in electronic components refers to the type of signal or data that is produced by the component as an output. This parameter specifies the nature of the output signal, such as analog or digital, and can also include details about the voltage levels, current levels, frequency, and other characteristics of the output signal. Understanding the output type of a component is crucial for ensuring compatibility with other components in a circuit or system, as well as for determining how the output signal can be utilized or processed further. In summary, the output type parameter provides essential information about the nature of the signal that is generated by the electronic component as its output.

    N-Channel
  • Interface

    In electronic components, the term "Interface" refers to the point at which two different systems, devices, or components connect and interact with each other. It can involve physical connections such as ports, connectors, or cables, as well as communication protocols and standards that facilitate the exchange of data or signals between the connected entities. The interface serves as a bridge that enables seamless communication and interoperability between different parts of a system or between different systems altogether. Designing a reliable and efficient interface is crucial in ensuring proper functionality and performance of electronic components and systems.

    On/Off
  • Output Configuration

    Output Configuration in electronic components refers to the arrangement or setup of the output pins or terminals of a device. It defines how the output signals are structured and how they interact with external circuits or devices. The output configuration can determine the functionality and compatibility of the component in a circuit design. Common types of output configurations include single-ended, differential, open-drain, and push-pull configurations, each serving different purposes and applications in electronic systems. Understanding the output configuration of a component is crucial for proper integration and operation within a circuit.

    High Side
  • Voltage - Supply (Vcc/Vdd)

    Voltage - Supply (Vcc/Vdd) is a key parameter in electronic components that specifies the voltage level required for the proper operation of the device. It represents the power supply voltage that needs to be provided to the component for it to function correctly. This parameter is crucial as supplying the component with the correct voltage ensures that it operates within its specified limits and performance characteristics. It is typically expressed in volts (V) and is an essential consideration when designing and using electronic circuits to prevent damage and ensure reliable operation.

    Not Required
  • Input Type

    Input type in electronic components refers to the classification of the signal or data that a component can accept for processing or conversion. It indicates whether the input is analog, digital, or a specific format such as TTL or CMOS. Understanding input type is crucial for ensuring compatibility between different electronic devices and circuits, as it determines how signals are interpreted and interacted with.

    Non-Inverting
  • Switch Type

    Based on their characteristics, there are basically three types of switches: Linear switches, tactile switches and clicky switches.

    General Purpose
  • Ratio - Input:Output

    The parameter "Ratio - Input:Output" in electronic components refers to the relationship between the input and output quantities of a device or system. It is a measure of how the input signal or energy is transformed or converted into the output signal or energy. This ratio is often expressed as a numerical value or percentage, indicating the efficiency or effectiveness of the component in converting the input to the desired output. A higher ratio typically signifies better performance or higher efficiency, while a lower ratio may indicate losses or inefficiencies in the conversion process. Understanding and optimizing the input-output ratio is crucial in designing and evaluating electronic components for various applications.

    1:1
  • Voltage - Load

    Voltage - Load refers to the voltage across a load component in an electronic circuit when it is connected and operational. It represents the electrical potential difference that drives current through the load, which can be a resistor, motor, or other devices that consume electrical power. The voltage - load relationship is crucial for determining how much power the load will utilize and how it will affect the overall circuit performance. Properly managing voltage - load is essential for ensuring devices operate efficiently and safely within their specified limits.

    1V~5.5V
  • Rds On (Typ)

    The parameter "Rds On (Typ)" in electronic components refers to the typical on-state resistance of a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) when it is fully conducting. This parameter indicates the resistance encountered by the current flowing through the MOSFET when it is in the on-state, which affects the power dissipation and efficiency of the component. A lower Rds On value indicates better conduction and lower power loss in the MOSFET. Designers often consider this parameter when selecting components for applications where minimizing power loss and maximizing efficiency are critical factors.

    52m Ω
  • Built-in Protections

    Built-in protections in electronic components refer to the safety features and mechanisms that are integrated into the component to prevent damage or malfunction in various situations. These protections are designed to safeguard the component from overvoltage, overcurrent, overheating, short circuits, and other potential hazards that could occur during operation. By having built-in protections, electronic components can operate more reliably and safely, extending their lifespan and reducing the risk of failure. These protections are essential for ensuring the overall performance and longevity of electronic devices and systems.

    TRANSIENT
  • Output Current Flow Direction

    Output Current Flow Direction refers to the orientation of current flowing out of a component or circuit. It indicates whether the current is being sourced from the component or sent to another component in the circuit. This parameter is crucial for understanding how electronic components interact within a circuit and ensures correct connectivity and functionality in circuit design. The direction can affect the operation and performance of the overall system.

    SINK
  • Features

    In the context of electronic components, the term "Features" typically refers to the specific characteristics or functionalities that a particular component offers. These features can vary depending on the type of component and its intended use. For example, a microcontroller may have features such as built-in memory, analog-to-digital converters, and communication interfaces like UART or SPI.When evaluating electronic components, understanding their features is crucial in determining whether they meet the requirements of a particular project or application. Engineers and designers often look at features such as operating voltage, speed, power consumption, and communication protocols to ensure compatibility and optimal performance.In summary, the "Features" parameter in electronic components describes the unique attributes and capabilities that differentiate one component from another, helping users make informed decisions when selecting components for their electronic designs.

    Load Discharge, Slew Rate Controlled
  • Height
    1.45mm
  • Length
    2.9mm
  • Width
    1.6mm
  • Thickness

    Thickness in electronic components refers to the measurement of how thick a particular material or layer is within the component structure. It can pertain to various aspects, such as the thickness of a substrate, a dielectric layer, or conductive traces. This parameter is crucial as it impacts the electrical, mechanical, and thermal properties of the component, influencing its performance and reliability in electronic circuits.

    1.2mm
  • RoHS Status

    RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.

    ROHS3 Compliant
  • Lead Free

    Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.

    Lead Free
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TPS22918TDBVRQ1 Functional Block Diagram

The following figure is TPS22918TDBVRQ1 Functional Block Diagram.

Functional Block Diagram.png

Functional Block Diagram

TPS22918TDBVRQ1 Test Circuit

The following shows TPS22918TDBVRQ1 Test Circuit.

Test Circuit.png

Test Circuit

(1) The control signal's rise and fall times are 100 nanoseconds.

(2) Turnoff and fall times are influenced by the load's time constant. When the switch is deactivated on the TPS22918TDBVRQ1, the internal pull-down resistance RPD is enabled. (RQOD || RL) CL is the time constant, where RQOD equals RPD + REXT.


TPS22918TDBVRQ1 Typical Application

This typical application demonstrates how the TPS22918TDBVRQ1 can be used to power downstream modules.

Typical Application Schematic.png

Typical Application Schematic


TPS22918TDBVRQ1 Layout

• To accommodate high current,  VIN  and VOUT traces must be as short and wide as feasible.

• Ceramic bypass capacitors with low ESR must be used to connect the VIN pin to ground. 1F ceramic with X5R or X7R dielectric is a standard recommended bypass capacitance. This capacitor should be as close as feasible to the device pins.

• Ceramic bypass capacitors with low ESR must be used to connect the VOUT pin to ground. The suggested bypass capacitance is one-tenth of the VIN bypass capacitor with dielectric ratings of X5R or X7R.

This capacitor should be as close as feasible to the device pins.

layout.png

Layout


TPS22918TDBVRQ1 Applications

• Automotive electronics

• Infotainment

• Cluster

• ADAS (Advanced Driver Assistance Systems)


TPS22918TDBVRQ1 Package

The following figure is TPS22918TDBVRQ1 Package.

package.png

Package


TPS22918TDBVRQ1 Manufacturer

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.


Trend Analysis

Frequently Asked Questions

What is the On-Resistance Load Switch?

The on-resistance of the load switch is a characteristic of the pass FET and will be used in calculating the power dissipated by the load switch. The pass FET can be either an N-channel or P-channel FET, which will determine the architecture of the load switch.

What is the TPS22918TDBVRQ1?

6-pin SOT-23 load switch.

What does the TPS22918TDBVRQ1 use to reduce voltage drop?

Low resistance N-channel MOSFET.

What is the TPS22918TDBVRQ1s slew rate?

Slew rate.

What can be used to set the VOUT discharge rate once the switch is turned off?

QOD pin.

What does the TPS22918TDBVRQ1 feature during shutdown?

Low leakage currents.

What causes inrush current to be induced by the TPS22918TDBVRQ1?

Large bulk load capacitances.

What type of pin does the TPS22918TDBVRQ1 have?

Customizable rapid output discharge.

What is the TPS22918TDBVRQ1 packaged in?

Solder joints.

What is the temperature range of the TPS22918TDBVRQ1?

–40°C to +105°C.
TPS22918TDBVRQ1

Texas Instruments

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