TI TPS61021ADSGR

TPS61021A provides a power supply solution for portable or smart devices powered by alkaline, NiMH, lithium-manganese, or lithium-ion batteries. The TPS61021A can deliver 3.3V output voltage at 1.5A when the battery discharges to as low as 1.8V. The TPS61021A supports input voltages down to 0.5V, extending battery runtime.

The TPS61021A operates at a 2MHz switching frequency under heavy load conditions and can enter power-save mode at light loads, maintaining high efficiency across the full load current range. The device draws only 17μA quiescent current from VOUT under light load conditions. During shutdown, the load is completely disconnected from the input. In addition, the TPS61021A features 4.35V output overvoltage protection, output short-circuit protection, and thermal shutdown protection.

The TPS61021A requires minimal external components, enabling a very compact solution size. The device supports the use of low-value inductors or output capacitors at a 2MHz switching frequency.

The TPS61021A is available in a 2.0mm x 2.0mm WSON package.

• Input voltage range: 0.5V to 4.4V
• Minimum input voltage at startup: 0.9V
• Configurable output voltage range: 1.8V to 4.0V
• Up to 91% efficiency (VIN = 2.4V, VOUT = 3.3V, IOUT = 1.5A)
• 2.0MHz switching frequency
• IOUT > 1.5A, VOUT = 3.3V (when ΔVIN > 1.8V)
• 17μA typical quiescent current
• ±2.5% reference voltage accuracy over -40°C to 125°C temperature range
• PFM operation mode at light load
• True input-output disconnect during shutdown
• Output overvoltage protection
• Output short-circuit protection
• Thermal shutdown protection
• 2mm×2mm WSON package

• Battery-powered IoT devices
• Game controllers
• Thermostats
• Portable medical devices
• Supercapacitor backup systems