TPS54340DDA
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Texas Instruments TPS54340DDA

Manufacturer No:
TPS54340DDA
Manufacturer:
Texas Instruments
Package:
Bulk
Description:
IC REG BUCK ADJ 3.5A 8SOPWR
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The TPS54340DDA from Texas Instruments is a high-performance, 42 V input, 3.5 A step-down DC/DC converter. This device is integrated with a high-side MOSFET and features Texas Instruments' Eco-mode™, which enhances efficiency at light loads. The TPS54340DDA is designed to survive load dump pulses up to 45 V per ISO 7637, making it suitable for robust automotive and industrial applications. It offers a wide range of features including current mode control, low ripple pulse skip mode, and adjustable undervoltage lockout (UVLO) voltage. The device is packaged in an 8-terminal thermally enhanced HSOP PowerPAD™ package, ensuring efficient heat dissipation and compact design.

Key Specifications

Parameter Value Unit
Input Voltage Range 4.5 to 42 V
Maximum Absolute Input Voltage 45 V
Continuous Output Current 3.5 A
Minimum Peak Inductor Current Limit 4.5 A
High-Side MOSFET Resistance 92
Operating Quiescent Current 146 µA
Shutdown Current 1 µA
Switching Frequency Range 100 kHz to 2.5 MHz
Internal Voltage Reference 0.8 V (1%)
Operating Temperature Range –40°C to 150°C
Package Type 8-Terminal HSOP with PowerPAD™

Key Features

  • Current mode control for simple external compensation and flexible component selection
  • Eco-mode™ for high efficiency at light loads with pulse skipping
  • Low ripple pulse skip mode reducing no-load supply current to 146 µA
  • Shutdown supply current reduced to 1 µA when the enable pin is pulled low
  • Adjustable undervoltage lockout (UVLO) voltage and hysteresis
  • Internal soft-start to eliminate overshoot during startup
  • Accurate cycle-by-cycle current limit
  • Thermal, overvoltage, and frequency foldback protection
  • Synchronizes to external clock
  • Integrated BOOT recharge FET for low dropout at light loads

Applications

The TPS54340DDA is suitable for a variety of applications, including:

  • Automotive systems: The device's ability to survive load dump pulses up to 45 V per ISO 7637 makes it ideal for automotive applications.
  • Industrial power supplies: Its high efficiency and robust protection features make it a reliable choice for industrial power supply designs.
  • Telecommunications: The device's wide input voltage range and high current capability make it suitable for telecommunications equipment.
  • Consumer electronics: It can be used in various consumer electronics requiring efficient and reliable power conversion.

Q & A

  1. What is the input voltage range of the TPS54340DDA?

    The input voltage range is from 4.5 V to 42 V, with a maximum absolute input voltage of 45 V.

  2. What is the continuous output current of the TPS54340DDA?

    The continuous output current is 3.5 A, with a minimum peak inductor current limit of 4.5 A.

  3. What is the operating quiescent current of the TPS54340DDA?

    The operating quiescent current is 146 µA.

  4. What is the shutdown current of the TPS54340DDA?

    The shutdown current is 1 µA when the enable pin is pulled low.

  5. What is the switching frequency range of the TPS54340DDA?

    The switching frequency range is from 100 kHz to 2.5 MHz.

  6. Does the TPS54340DDA have thermal protection?

    Yes, the device features thermal shutdown, overvoltage protection, and frequency foldback protection.

  7. What package type is the TPS54340DDA available in?

    The device is available in an 8-terminal thermally enhanced HSOP PowerPAD™ package.

  8. What is the operating temperature range of the TPS54340DDA?

    The operating temperature range is from –40°C to 150°C.

  9. Does the TPS54340DDA support synchronization to an external clock?

    Yes, the device can synchronize to an external clock.

  10. What is the purpose of Eco-mode™ in the TPS54340DDA?

    Eco-mode™ enhances efficiency at light loads by using pulse skipping, reducing the no-load supply current.

Product Attributes

Function:Step-Down
Output Configuration:Positive
Topology:Buck
Output Type:Adjustable
Number of Outputs:1
Voltage - Input (Min):4.5V
Voltage - Input (Max):42V
Voltage - Output (Min/Fixed):0.8V
Voltage - Output (Max):41.1V
Current - Output:3.5A
Frequency - Switching:100kHz ~ 2.5MHz
Synchronous Rectifier:No
Operating Temperature:-40°C ~ 150°C (TJ)
Mounting Type:Surface Mount
Package / Case:8-PowerSOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SO PowerPad
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Similar Products

Part Number TPS54340DDA TPS54360DDA TPS54340DDAR TPS54340BDDA
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Not For New Designs Not For New Designs Not For New Designs Active
Function Step-Down Step-Down Step-Down Step-Down
Output Configuration Positive Positive Positive Positive
Topology Buck Buck, Split Rail Buck Buck
Output Type Adjustable Adjustable Adjustable Adjustable
Number of Outputs 1 1 1 1
Voltage - Input (Min) 4.5V 4.5V 4.5V 4.5V
Voltage - Input (Max) 42V 60V 42V 42V
Voltage - Output (Min/Fixed) 0.8V 0.8V 0.8V 0.8V
Voltage - Output (Max) 41.1V 58.8V 41.1V 41.1V
Current - Output 3.5A 3.5A 3.5A 3.5A
Frequency - Switching 100kHz ~ 2.5MHz 100kHz ~ 2.5MHz 100kHz ~ 2.5MHz 100kHz ~ 2.5MHz
Synchronous Rectifier No No No No
Operating Temperature -40°C ~ 150°C (TJ) -40°C ~ 150°C (TJ) -40°C ~ 150°C (TJ) -40°C ~ 150°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 8-PowerSOIC (0.154", 3.90mm Width) 8-PowerSOIC (0.154", 3.90mm Width) 8-PowerSOIC (0.154", 3.90mm Width) 8-PowerSOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SO PowerPad 8-SO PowerPad 8-SO PowerPad 8-SO PowerPad

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