Texas Instruments' TLV61070A is a synchronous boost converter designed to provide a power supply solution for portable equipment and smart devices that rely on batteries and supercapacitors. This boost converter stands out due to its ultra-low 0.5 V input voltage capability.
The TLV61070A is particularly suitable for applications that require a backup power source, such as those utilizing supercapacitors, which may experience deep discharges. With a typical valley switch current limit of 2.5 A over the full temperature range, this boost converter ensures reliable and efficient power supply.
Operating at a switching frequency of 1 MHz when the input voltage exceeds 1.5 V, the TLV61070A gradually decreases its switching frequency to 0.55 MHz within the input voltage range of 1 V to 1.5 V. This flexibility allows for optimal performance in various operating conditions.
To maximize efficiency, the converter enters power-save mode during light load conditions. It consumes only 20 µA of quiescent current from the output voltage (VOUT) while maintaining high efficiency over the load current range. Furthermore, during shutdown, the TLV61070A completely disconnects from the input power, resulting in a minimal current consumption of 0.1 µA and contributing to long battery life.
The TLV61070A incorporates several protection features, including 5.7 V output overvoltage protection (OVP), output short-circuit protection, and thermal shutdown protection. These safeguards ensure the safe operation of the boost converter and protect it from potential damage.
With its compact 2.9 mm x 1.6 mm SOT23-6 (DBV) package and minimal external component requirements, the TLV61070A offers an efficient and space-saving solution for power supply needs in portable devices.
In summary, Texas Instruments' TLV61070A boost converter is specifically designed to provide an ultra-low input voltage solution for portable devices and smart equipment. With features such as a 0.5 V input voltage, high valley switch current limit, flexible switching frequency, power-saving mode, protection features, and a compact package, this boost converter meets the power supply requirements of various battery-powered applications while ensuring efficiency and reliability.
Input voltage range: 0.5 V to 5.5 V
Input voltage for startups: 1.3 V (min.)
Output voltage setting range: 2.2 V to 5.5 V
Two MOSFETs: 69 mΩ (LS) and 89 mΩ (HS)
Valley switching current limit: 2.5 A
Efficiency: 92.3% at VIN = 3.6 V, VOUT = 5 V, and IOUT = 1.0 A
Switching frequency: 1 MHz when VIN >1.5 V and 0.55 MHz when VIN <1 V
Shutdown current: 0.1 µA (typ.) from VIN and SW
Reference voltage accuracy: ±2.5% over the temperature range of -40°C to +125°C
Auto-PFM operation mode at light loads
Pass-through mode when VIN > VOUT
True disconnection between the input and output during shutdown
OVP, output short-circuit, and thermal shutdown protections
Package: 2.9 mm x 1.6 mm 6-pin SOT23-6 (DDC)
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