Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
EE Times-Asia > Power/Alternative Energy
Power/Alternative Energy??

Four-output PMIC packs 400kHz I?C

Posted: 20 Apr 2010 ?? ?Print Version ?Bookmark and Share

Keywords:power management IC? PMIC? interface? regulator?

Micrel Inc. has released a new four-output, programmable power management IC that integrates a single 500mA PWM/PFM synchronous buck (step-down) regulator with three low dropout regulators in a tiny 2.5mm x 2.5mm Thin MLF package.

The MIC2826 also features a standard 400kHz fast-mode I?C interface that provides Dynamic Voltage Scaling, programmable power sequencing and individual output control, making it a suitable integrated power system solution for advanced portable electronics. The IC is optimized for high efficiency power support in GPS subsystems, general purpose PMIC, mobile phones/PDAs, portable media players, mobile TV receivers and application processors.

The synchronous buck regulator features a patented HyperLight Load architecture that minimizes switching losses, offers fast transient response throughout the entire load range and provides low quiescent current operation for high efficiency at light loads. The proprietary architecture switches at 4MHz, which reduces the value and size of the output capacitors and inductor, thereby reducing overall system size and cost. Three high performance LDOs are integrated into the MIC2826 to provide additional system voltages for I/O, memory and other analog functions. Each LDO is capable of sourcing 150mA output current with high PSRR and low output noise.

In addition, a 2 percent output voltage accuracy, low dropout voltage (150mV @ 150mA), and low ground current of 116?A (all three LDOs operating) makes this device suited for mobile applications. All the outputs can be controlled via Enable pin or I?C using a simplified single command register to reduce latency for an ultra-fast response time. Other benefits include standard fast-mode I?C control interface, default start-up voltage states and sequencing, fault indication processor flag (IRQb), thermal shutdown, current-limit protection and a Power On After Fault function. The MIC2826 is available in a tiny 14-pin 2.5mm x 2.5mm Thin MLF with a junction operating range from -40C to +125C.

"This advanced PMIC provides a complete power solution for application processors and greatly extends battery life. All four outputs are fully controlled through I?C that allows for Dynamic Voltage Scaling of the HyperLight Load buck regulator. The step resolution of 25mV increments can precisely match the power output to the real-time needs of the processor," noted Andy Khayat, director, portable business unit, Micrel. "The other three LDO outputs can be post regulated for high efficiency support of the other system power rails such as digital I/O and analog interfaces. This device's advanced features and extreme performance meets the needs of the market's hottest new consumer devices. The PMIC has already attracted strong customer interest from market leaders that are seeking longer battery life for their power-hungry consumer devices."

The IC is available in volume and is priced at $1.13 for 1,000 quantities.

Article Comments - Four-output PMIC packs 400kHz I?...
*? You can enter [0] more charecters.
*Verify code:


Visit Asia Webinars to learn about the latest in technology and get practical design tips.

Back to Top