Texas Instruments TPS61022

Beschreibung

The TPS61022 provides a power supply solution for portable equipment and IoT devices powered by various batteries and super capacitors. The TPS61022 has minimum 6.5-A valley switch current limit over full temperature range. With a wide input voltage range of 0.5 V to 5.5 V, the TPS61022 supports supercapacitor backup power applications, which may deeply discharge the supercapacitor. The TPS61022 operates at 1-MHz switching frequency when the input voltage is above 1.5 V. the switching frequency decreases gradually to 0.6 MHz when the input voltage is below 1.5 V down to 1 V. A MODE pin sets the TPS61022 operating either in power-save mode or forced PWM mode in light load condition. The TPS61022 only consumes a 26-μA quiescent current from VOUT in light load condition. During shutdown, the load is completely disconnected from the input power. The TPS61022 has 5.7-V output overvoltage protection, output short-circuit protection, and thermal shutdown protection.

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 12-mΩ (LS) / 18-mΩ (HS) MOSFETs
• 8-A Valley switching current limit
• 94.7% Efficiency at VIN = 3.6 V, VOUT = 5 V and IOUT = 3 A
• 1-MHz Switching frequency when VIN > 1.5 V and 0.6-MHz switching frequency when VIN < 1 V
• ±2.5% Reference voltage accuracy over –40°C to +125°C
• Pin-selectable auto PFM operation mode or forced PWM 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
• 2-mm × 2-mm VQFN 7-pin package

Typische Anwendungen

• SuperCap backup, GPRS power supply
• USB port

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers