Switching Voltage Regulators 3-17V 0.5A 2.5MHZ SD Converter A 595-TPS62172DSGT

TPS62172DSGR – 3.3V 500mA Step-Down DC-DC Converter – Texas Instruments

Optimize your power management with the TPS62172DSGR, a high-efficiency step-down DC-DC regulator from Texas Instruments. Designed for compact, energy-sensitive applications, this IC delivers a fixed 3.3V output with up to 500mA current, featuring ultra-low quiescent current and exceptional thermal performance. PCX ensures genuine Texas Instruments components with same-day shipping and dedicated technical support.

Key Features

• Topology: Synchronous Buck (Step-Down)
• Input Voltage Range: 3V to 17V DC
• Fixed Output: 3.3V ±2% accuracy
• Output Current: 500mA continuous
• High Efficiency: Up to 95% (DCS-Control™ technology)
• Switching Frequency: 2.25MHz (enables small external components)
• Ultra-Low IQ: 15µA typical (extends battery life)
• Operating Temperature: -40°C to +85°C

Technical Details

This monolithic IC integrates a synchronous rectifier MOSFET for reduced power loss and supports 100% duty cycle operation. The 8-WSON (2×2) package with exposed thermal pad ensures efficient heat dissipation in space-constrained designs. Its fixed-frequency PWM with DCS-Control™ provides fast transient response and low output ripple. Surface-mount ready for automated assembly.

Typical Applications

• Battery-powered IoT sensors and wearables
• Industrial handheld instrumentation
• Embedded computing modules
• 5G/Wi-Fi module power rails
• Portable medical devices

About Texas Instruments

Texas Instruments (TI) is a global semiconductor leader with over 90 years of innovation in analog and embedded processing. Renowned for rigorous quality standards (AEC-Q100 qualified options available), TI’s power management ICs set industry benchmarks for efficiency and reliability across automotive, industrial, and consumer markets.

TI’s DCS-Control™ architecture, used in this regulator, exemplifies their commitment to solving complex power challenges. Their vertically integrated manufacturing ensures consistent performance and traceability, making TI components preferred solutions for mission-critical designs worldwide.

About Step-Down DC-DC Switching Regulators

Buck converters efficiently reduce higher input voltages to lower, stable outputs with minimal energy loss. Unlike linear regulators, switching topologies like the TPS62172DSGR maintain high efficiency across wide load ranges, crucial for heat management and battery runtime in modern electronics.

These ICs form the core of power delivery networks in compact devices. Their ability to handle fluctuating input sources (e.g., batteries or unregulated adapters) while delivering precise voltages makes them indispensable for portable electronics, embedded systems, and noise-sensitive applications where size and efficiency are paramount.

Packaging Options

Available in Tape & Reel (TR), Cut Tape (CT), and Digi-Reel® formats for flexible prototyping and production scaling. Compatible with standard pick-and-place equipment.

FAQs

Question: What is the typical efficiency of this regulator at 100mA load?
Answer: Approximately 90% efficiency at 3.6V input to 3.3V output (see PCX-hosted datasheet for full curves).

Question: Does it require external compensation components?
Answer: No – the TPS62172DSGR is internally compensated for simplified design.

Question: Can it operate from a single Li-Ion battery?
Answer: Yes – the 3V-17V input range supports 1-cell Li-Ion (2.8V–4.2V) and 3-cell NiMH configurations.

Question: Is this IC suitable for automotive applications?
Answer: This variant is industrial-grade (-40°C to +85°C). For automotive, inquire about AEC-Q100 qualified versions.

Question: What’s the advantage of 2.25MHz switching frequency?
Answer: Higher frequencies allow smaller inductors/capacitors, reducing PCB area by up to 50% versus lower-frequency alternatives.

Question: How does DCS-Control™ improve performance?
Answer: TI’s proprietary architecture combines fast transient response of hysteretic control with voltage-mode accuracy, minimizing output deviation during load steps.

Note: Product images are representational. Refer to datasheet for exact dimensions.

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