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MIC5254 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC5254 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 11 page MIC5254 Dual 150mA µCap LDO with Error Flag Outputs Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( 408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com December 2007 M9999-121107 General Description The MIC5254 is an efficient, precise, dual CMOS voltage regulator. It offers better than 1% initial accuracy, extremely low dropout voltage (typically 135mV at 150mA) and low ground current (typically 90µA) over load. The MIC5254 features two independent LDOs with error flags that indicate an output fault condition such as overcurrent, thermal shut-down and dropout. Designed specifically for handheld and battery-powered devices, the MIC5254 provides a TTL-logic-compatible enable pin. When disabled, power consumption drops nearly to zero. The MIC5254 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices. Key features include current limit, thermal shutdown, faster transient response, and an active clamp to speed up device turnoff. The MIC5254 is available in the 10-pin MSOP package and is rated over a –40°C to +125°C junction temperature range. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. Features • Input voltage range: 2.7V to 6.0V • Dual, independent 150mA LDOs • Error flags indicate fault condition • Stable with ceramic output capacitor • Ultra-low dropout: 135mV @ 150mA • High output accuracy: 1.0% initial accuracy 2.0% over temperature • Low quiescent current: 90µA each LDO • Tight load and line regulation • Thermal shutdown and current limit protection • “Zero” off-mode current • TTL logic-controlled enable input • 10-pin MSOP package Applications • Cellular phones and pagers • Cellular accessories • Battery-powered equipment • Laptop, notebook, and palmtop computers • Consumer/personal electronics ___________________________________________________________________________________________________________ Typical Application MIC5254 VINA VINA ENA GNDA ENB OUTA FLGA OUTB FLGB GNDB VINA VINB VOUTA VOUTB 1µF 1µF 1µF Ceramic 1µF Ceramic FLGA FLGB 9 2 3 6 5 10 1 8 4 7 Dual Output LDO with Error Flag |
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