LTRIM’s Micropower LDO IP Blocks Increase Battery Life
LTRIM Technologies now offers its LTR18xx family of Low Drop Out (LDO) voltage regulator IP blocks. The new LTR1801-2.4T25, LTR1802-2.5T25, and LTR1803-T25 IP blocks are designed to increase the operating time of battery-operated system-on-chips (SoCs) by offering many key features such as very low drop out voltage, very low quiescent current, and fast-response low-power shutdown modes.
All the IP blocks support a wide input voltage range (2.7V – 5.5V) with excellent power supply rejection ratio (PSRR) over extended temperature range. End-user applications enabled by these characteristics include wireless and handheld portable systems such as handheld meters, mobile phones, Bluetooth devices, digital cameras, pagers, PDAs, laptops, and global positioning satellite (GPS) systems.
"By maintaining accurate voltage regulation even as battery power diminishes, our LDO IP blocks help extend the operating time of a wide range of SoC-based portable devices," said LTRIM marketing director, Sean Long. "These new, silicon-proven blocks are great additions to our growing IP portfolio and illustrate our continued focus on bringing SoC designers a steadily increasing list of IP specifically aimed at meeting end-use market needs."
With an output voltage accuracy of one percent and very low current consumption (16µA quiescent and just 0.6µA standby), the LTR1801-2.4T25 is ideal for system control processor units that are always in standby mode monitoring the system and user-interface. If the battery is at the limit of its lifetime, the LTR1801-2.4T25 fault detector indicator warns the system control processor unit of the SoC, allowing the SoC to take the appropriate measures in this critical situation. This key feature greatly improves the reliability of the SoC.
The ultra low power of the LTR1802-2.5T25 is ideally suited to supply the integrated real-time clock (RTC) sub-system in a SoC. The LTR1802-2.5T25 doesn't require any external components, helping to reduce the PCB area and BOM costs. The LTR1803-T25 offers dynamically programmable output voltage for maximum flexibility, trading off performance versus power consumption as well as allowing design reuse for multiple voltages such as core and I/O.
All three regulator blocks support a wide input voltage range (2.7V – 5.5V) and feature low quiescent currents, fast turn-on and turn-off times, high PSRR, low power consumption, high output accuracy, tight load/line regulation, low noise output, and dropout voltage of 200mV.
