Texas Instruments TPS6128xD Synchronous Booster Converter provides a power supply solution for products powered by either by a Li-Ion, Nickel-Rich, Silicon Anode, Li-Ion or LiFePO4 battery. The voltage range is optimized for single-cell portable applications like in smart-phones or tablet PCs. When the device is used as a high-power pre-regulator, the TPS6128xD extends the battery run-time and overcomes input current and voltage limitations of the powered system. While in shutdown, the TPS6128xD operates in a true pass-through mode with only 3µA quiescent consumption for longest battery shelf life. During operation, when the battery is at a good state-of-charge, a low-ohmic, high-efficient integrated pass-through path connects the battery to the powered system. If the battery gets to a lower state of charge and its voltage becomes lower than the desired minimum system voltage, the device seamlessly transits into boost mode to uses the full battery capacity.
Feature
- 95% Efficiency at 2.3 MHz Operation
- 3-μA Quiescent Current in Low IQ Pass-Through Mode
- Wide VIN Range From 2.3 V To 4.8 V
- IOUT ≥ 4A (Peak) at VOUT = 3.35 V, VIN ≥ 2.65 V
- Integrated Pass-Through Mode (35 mΩ)
- Programmable Valley Inductor Current Limit and Output Voltage
- True Pass-Through Mode During Shutdown
- Best-in-Class Line and Load Transient
- Low-Ripple Light-Load PFM Mode
- In-Situ Customization with On-Chip E2PROM (Write Protection)
- Two Interface Options:
- I2C Compatible I/F up to 3.4 Mbps (TPS61280D)
- Simple I/O Logic Control Interface
- Thermal Shutdown and Overload Protection
- Total Solution Size < 20 mm2, Sub 1-mm Profile
