Dallas—Using a new analog process, Texas Instruments' TPS62110, a 1.5-amp DC/DC step-down regulator IC, boasts an efficiency of 95 percent to extend battery life in industrial handhelds, portable test equipment, and consumer devices powered by two- to three-cell lithium-based batteries or a 12-volt power source. TI says the device achieves the smallest solution size with highest power efficiency over a wide input range.
The TPS62110 is based on TI's LBC7 analog process, which contributes to what the company says is the industry’s lowest specific on-resistance and opens the door for future devices to handle 30-V supply voltages. Working from a 3.1 to 17-volt input, the regulator, which includes integrated FETs, provides an output down to 1.2 volts. It uses the PFM mode at light loads to maintain the chip's high efficiency over a wide load current range. Power consumption in shutdown is less than 2 microamps.
The converter’s 1-MHz switching frequency allows the use of smaller external components. The TPS62110 can be synchronized to an external clock signal between 0.8 MHz and 1.4 MHz. For even lower-noise operation, the converter can operate in a PWM-only mode.
TI complements the release of the TPS62110 with its TPS63700 boost inverter. The 3-by-3 mm device, working from a 2.7- to 5.5-volt input, has an 800-mA switch current limit and can provide an output voltage down to -15 volts.
The TPS62110 datasheet can be found at focus.ti.com/lit/ds/symlink/tps62110.pdf. The TPS62110, in a 4-by-4 mm QFN package, is priced at $2.50 each in 1k quantities. The TPS63700 inverter is currently in sampling. Evaluation modules for both devices are available.
Texas Instruments, 1-800-477-8924, power.ti.com