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MIC2827 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC2827 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 27 page MIC2827 Triple Output PMIC with HyperLight Load™ DC- DC, two LDOs, and I 2C Control HyperLight Load is a trademark of Micrel, Inc MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com July 2009 M9999-072709-A General Description The Micrel MIC2827 is a three output, programmable Power Management IC, optimized for high efficiency power support in Mobile Application Processors, Co- Processors, DSPs, GPS and Media Player chipsets. The device integrates a single 500mA PWM/PFM synchronous buck (step-down) regulator with two Low Dropout Regulators and a 400kHz I²C interface that provides programmable Dynamic Voltage Scaling (DVS), Power Sequencing, and individual output Enable/Disable controls allowing the user to optimally control all three outputs. The 4MHz synchronous buck regulator features a patented HyperLight Load™ (HLL) architecture which minimizes switching losses and provides low quiescent current operation for high efficiency at light loads. Additional benefits of this proprietary architecture are low output ripple voltage and fast transient response throughout the entire load range with the use of small output capacitors, reducing the overall system size. Two high performance LDOs are integrated into the MIC2827 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. A 2% output voltage accuracy, low dropout voltage (150mV @ 150mA), and low ground current of 83µA (both LDOs operating) makes this device ideally suited for mobile applications. The MIC2827 is available in a tiny 14-pin 2.5mm x 2.5mm Thin MLF ® with a junction operating range from -40°C to +125 °C. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Applications • Application processors • GPS subsystems • General purpose PMIC • Mobile phones / PDAs • Portable media players • Mobile television receivers Features • Fast-mode I2C control interface • Tiny 14-pin 2.5mm x 2.5mm MLF® package • Default start-up voltage states and sequencing • Fault indication processor flag - IRQb • -40°C to 125°C junction temperature range • Thermal shutdown and current-limit protection • Power On After Fault (POAF) function DC-DC Synchronous Buck • 2.7V to 5.5V input voltage range • 500mA continuous output current • HyperLight Load™ mode – 25µA quiescent current • 90% peak efficiency; 85% at 1mA • Ultra-fast transient response • Dynamic Voltage Scaling (DVS) range: 0.8V to 1.8V – 0.8V to 1.2V in 25mV steps – 1.2V to 1.8V in 50mV steps • ±3% over temperature • Low output voltage ripple: 20mVpp in HyperLight Load™ mode, 3mV in full PWM mode LDOs • 1.8V to VDVIN input voltage range • 150mA output current (each LDO) • Dynamic Voltage Scaling (each LDO) – DVS range: 0.8V to 3.3V in 50mV steps • ±3% over temperature • Low quiescent current – 50µA (each LDO) • Low dropout voltage – 50mV @ 50mA • Low output noise - 45µVRMS • Stable with ceramic output capacitors • 65dB PSRR at 1kHz |
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