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MIC5259-3.3BML Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC5259-3.3BML Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 9 page MIC5259 Micrel, Inc. May 2005 1 M9999-051305 General Description TheMIC5259isanefficientCMOSvoltageregulatoroptimized for low-noise applications. It offers 1.5% initial accuracy, low dropout voltage (300mV at 300mA) and low ground current (typically 105µA at light load). The MIC5259 provides a very- low-noise output, ideal for RF applications where a clean voltage source is required. The MIC5259 has a high PSRR even at low supply voltages, critical for battery operated electronics. A noise bypass pin is also available for further reduction of output noise. Designed specifically for handheld and battery-powered devices, the MIC5259 provides a TTL-logic-compatible enable pin. When disabled, power consumption drops to nearly zero. The MIC5259 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications; critical issue in handheld wireless devices. Key features include current limit, thermal shutdown, faster transient response, and an active clamp to speed up device turn-off. The MIC5259 is available in the 6-pin 2mm × 2mm MLF™ package and the ThinSOT™-23-5 package in a wide range of output voltages. Typical Application MIC5259 300mA High PSRR, Low Noise µCap CMOS LDO Features • Input voltage range: 2.7V to 6.0V • PSRR = 70dB @ 1kHz • Low output noise: 30µV(rms) • Stability with ceramic output capacitors • Low-dropout: 300mV @ 300mA • High-output accuracy: 1.5% initial accuracy 3.0% over temperature • Low quiescent current: 105µA • Tight load and line regulation • TTL-Logic-controlled enable input • “Zero” off-mode current • Thermal shutdown and current limit protection Applications • Cellular phones and pagers • Cellular accessories • Battery-powered equipment • Laptop, notebook, and palmtop computers • Consumer/personal electronics • Industrial portable electronics • PC peripherals Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com MicroLeadFrame and MLF are trademarks of Amkor Technology. ThinSOT is a trademark of Linear Technology Corporation. COUT= 1.0µF Ceramic 1 5 2 3 4 CBYP= 0.01µF Enable Shutdown EN VOUT MIC5259-x.xBD5 EN (pin 3) may be connected directly to IN (pin 1). VIN CIN = 1.0µF Ceramic MIC5259-x.xBML 1 EN 6 CBYP (optional) VIN VOUT COUT = 1.0µF 5 4 2 3 ENABLE SHUTDOWN CIN = 1.0µF 0.01µF Ultra-Low-Noise Regulator Application |
Similar Part No. - MIC5259-3.3BML |
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Similar Description - MIC5259-3.3BML |
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