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Datasheet
TPS62A01ADRLR - 1A Synchronous Buck Switching Regulator IC, 2.5V–5.5V Input, SOT-563 Package
The TPS62A01ADRLR from Texas Instruments is a high-efficiency, ultra-compact 1A synchronous step-down DC/DC buck converter designed for space-constrained applications requiring low quiescent current and reliable power regulation. Operating from a 2.5V to 5.5V input range, it supports an adjustable output voltage from 0.6V to VIN, making it ideal for powering digital ICs, microcontrollers, sensors, and other low-voltage circuits. The device integrates low R DS(ON) switches (180mΩ/120mΩ) to ensure low conduction losses and high conversion efficiency.
The TPS62A01A variant operates in forced PWM mode across the entire load range, maintaining tight voltage regulation and low ripple. It features a 2.4 MHz fixed switching frequency for reduced solution size and minimal EMI. At light loads, the converter automatically transitions into Power Save Mode (PSM) to maximize efficiency. Additional built-in functions include soft-start, short-circuit protection (HICCUP), thermal shutdown, 100% duty cycle operation, and active output discharge. Housed in a compact SOT-563 package, this regulator is optimized for portable, battery-powered, and industrial electronics applications.
Key Features:
- Wide Input Voltage Range: 2.5V to 5.5V, suitable for single Li-ion cells or 5V bus systems.
- Adjustable Output Voltage: 0.6V to VIN via external resistor divider for design flexibility.
- High Efficiency Design: Low R DS(ON) switches (180mohm/120mohm for 1A DRL) minimize conduction losses.
- Low Quiescent Current: <23 uA ensures excellent light-load performance and energy savings.
- Accurate Regulation: 1% feedback accuracy from 0 C to 125 C for precision voltage output.
- High-Frequency Operation: Fixed 2.4 MHz switching frequency enables compact inductor and capacitor selection.
- PWM or PSM Operation: Power save mode or forced PWM for optimal efficiency across all load conditions.
- Comprehensive Protection: Includes short-circuit (HICCUP), overcurrent, and thermal shutdown safeguards.
- Soft Start-Up and Output Discharge: Limits inrush current and ensures safe power-down behavior.
- Compact SOT-563 Package: Ideal for portable and space-sensitive applications with high power density.
