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TPS55340RTER

5A boost/SEPIC DC-DC converter, 2.7-38V input, integrated MOSFET, 500kHz, VQFN-16

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Manufacturer Part：

TPS55340RTER

Package：

VQFN-16 (3.0 × 3.0 × 0.8 mm)

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Description

Product Overview

The TPS55340RTER is a 5A integrated boost converter from Texas Instruments with a wide input voltage range of 2.7V to 38V. It features an integrated 5A/40mΩ N-channel MOSFET and operates at a fixed 500 kHz switching frequency with optional external synchronization. Packaged in a 16-pin VQFN (RTE) package, it is ideal for boost, SEPIC, and flyback converter topologies.

Key Specifications

Function Boost/SEPIC/Flyback DC-DC Converter
Input Voltage 2.7V to 38V
Output Voltage Up to 38V
Switch Current 5A
Switch RDS(on) 40mΩ
Switching Frequency 500 kHz (fixed)
Package 16-pin VQFN (3.0 × 3.0 mm)
Operating Temperature -40°C to +150°C (TJ)

Features

  • Wide 2.7V to 38V input voltage range
  • Integrated 5A, 40mΩ N-channel MOSFET
  • 500 kHz fixed frequency with external synchronization
  • Programmable soft start and current limit
  • Supports boost, SEPIC, and flyback topologies
  • Thermal shutdown and overcurrent protection

Applications

  • LED backlight drivers
  • Industrial power supplies
  • Automotive battery-powered systems
  • SEPIC converters for battery-powered devices
  • USB Power Delivery boost stages

The TPS55340 is a monolithic non-synchronous boost converter with an integrated 5A, 40mΩ N-channel MOSFET switch. It supports a wide input voltage range from 2.7V to 38V, making it suitable for a variety of power conversion applications including boost, SEPIC, and flyback topologies. The device operates at a fixed 500 kHz switching frequency that can be synchronized to an external clock, and features programmable soft start, cycle-by-cycle current limit, and thermal shutdown protection. The compact VQFN package minimizes board space while delivering high power density.

The TPS55340 uses a current-mode PWM control architecture. An internal error amplifier compares the feedback voltage (FB pin) with an internal 1.204V reference and drives the PWM comparator. The inductor current is sensed and compared against the error amplifier output on a cycle-by-cycle basis to regulate the output voltage. The integrated N-channel MOSFET switches at 500 kHz, and the external Schottky diode provides the rectification path during the off-time. In SEPIC or flyback configurations, the same control loop operates but the energy transfer occurs through a coupling capacitor or flyback transformer respectively. The soft-start function ramps the reference voltage gradually to limit inrush current at startup.

Pin Name Type Function
1 EN Input Enable — logic high enables the device
2 VIN Power Input supply voltage
3 SW Output Switch node — connect to inductor and Schottky diode
4 SW Output Switch node — connect to inductor and Schottky diode
5 PGND Power Power ground
6 PGND Power Power ground
7 AGND Power Analog ground
8 FB Input Feedback — connect resistor divider from output
9 COMP Output Error amplifier output — connect compensation network
10 SS Output Soft start — connect external capacitor
11 FSYNC Input Frequency sync — apply external clock or tie to VCC
12 VCC Output Internal 5V LDO output — bypass with capacitor
13 ILIM Input Current limit programming resistor
14 PWRGD Output Power good open-drain output
15 PGND Power Power ground
16 SW Output Switch node
  • 12V/24V to 36V LED backlight driver in industrial displays
  • SEPIC converter for single-cell Li-ion to 12V rail
  • USB PD boost stage from 5V to 9V/15V/20V
  • Automotive battery pre-boost for infotainment systems
  • Industrial 24V to 48V power conversion
Manufacturer Part Number Package Notes
TI LMR14206 SOT-23-6 Lower current, 42V input boost
TI TPS61175 HTSSOP-14 3A boost, 3-24V input
Monolithic Power MP8759 QFN-16 5A boost converter
Richtek RT8560 WQFN-16 Similar boost converter
Infineon TLE8386 PG-DSO-14 Automotive grade boost
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Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

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All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

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Contact Information

Email: info@ic-vendor.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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2. Genuine Product Guarantee & Full-process Quality Inspection

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@ic-vendor.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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