Texas Instruments TPS61023

Beschreibung

TPS61023 device is a synchronous boost converter with 0.5-V ultra-low input voltage. The device provides a power supply solution for portable equipment and smart devices powered by various batteries and super capacitors. The TPS61023 has typical 3.7-A valley switch current limit over full temperature range. With a wide input voltage range of 0.5 V to 5.5 V, the TPS61023 supports super capacitor backup power applications, which may deeply discharge the super capacitor. The TPS61023 operates at 1-MHz switching frequency when the input voltage is above 1.5 V. The switching frequency decreases gradually to 0.5 MHz when the input voltage is below 1.5 V down to 1 V. The TPS61023 enters power-save mode at light load condition to maintain high efficiency over the entire load current range. The TPS61023 consumes a 20- µA quiescent current from VOUT in light load condition. During shutdown, the TPS61023 is completely disconnected from the input power and only consumes a 0.1-µA current to achieve long battery life. The TPS61023 has 5.7-V output overvoltage protection, output short circuit protection, and thermal shutdown protection. The TPS61023 offers a very small solution size with 1.2-mm × 1.6-mm SOT563 (DRL) package and minimum amount of external components.

Eigenschaften

• Input voltage range: 0.5 V to 5.5 V
• 1.8-V Minimum input voltage for start-up
• Output voltage setting range: 2.2 V to 5.5 V
• Two 47-mΩ (LS) / 68-mΩ (HS) MOSFETs
• 3.7-A Valley switching current limit
• 94% Efficiency at VIN = 3.6 V, VOUT = 5 V and IOUT= 1.5 A
• 1-MHz Switching frequency when VIN > 1.5 V and 0.5-MHz switching frequency when VIN < 1 V
• Typical 0.1-µA shutdown current from VIN and SW
• ±2.5% Reference voltage accuracy over –40°C to +125°C
• Auto PFM operation mode at light load
• Pass-through mode when VIN > VOUT
• True disconnection between input and output during shutdown
• Output overvoltage and thermal shutdown protections
• Output short-circuit protection
• 1.2-mm × 1.6-mm SOT563 (DRL) 6-pin package

Typische Anwendungen

• Electronic shelf label, Video doorbell, Remote controller

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers