Microchip Technology Inc. (Chandler, AZ) introduced a quad, CMOS low dropout regulator (LDO) with select mode technology, shutdown and independent reset functions, saving significant board-space and costs. The new TC1307 offers a fast response time from shutdown (10µsec), responding better to input and output transient conditions than similar solutions, according to the company.
Available in a space-saving 16-pin QSOP package, the new device offers a maximum operating current of only 80µA per channel. All four outputs of the TC1307 typically consume a total of 220µA supply current, hold the output voltage to a tolerance of 0.5 percent and require 200mV of headroom for regulation at the maximum output current of 150mA. In addition to the four, high-performance LDOs, the TC1307 also includes a voltage detector with a delayed RESET output that can be configured as a low battery detector or a microcontroller reset generator.
The LDOs have independent shutdown input, further reducing power consumption and extending battery life in portable applications. The tri-state select mode input pin allows the designer to select the output voltages from four different values (1.8V, 2.5V, 2.8V or 3.0V). Small size, low dropout voltage and minimal supply current make the TC1307 suitable for use in battery-operated systems, RF/GPS/cellular phones, PDAs, pagers, instrumentation, medical instruments and load-partitioning applications. The TC1307 can also be used for virtually any system requiring multiple discrete, linear regulators and system supervisors, such as cordless phones and consumer electronics. The device comes in a space-saving 16-pin QSOP package.
Pricing for the TC1307 is $1.84 each in 1,000-unit quantities. Samples and volume production are now available.
