MIC5250
Micrel
MIC5250
Dual 150mA µCap CMOS LDO Regulator Preliminary Information
General Description
The MIC5250 is ...
MIC5250
Micrel
MIC5250
Dual 150mA µCap CMOS LDO
Regulator Preliminary Information
General Description
The MIC5250 is an efficient, precise dual CMOS voltage
regulator optimized for ultra-low-noise applications. The MIC5250 offers better than 1% initial accuracy, extremely low dropout voltage (typically 150mV at 150mA) and constant ground current over load (typically 100µA). The MIC5250 provides a very-low-noise output, ideal for RF applications where quiet voltage sources are required. A noise bypass pin is also available for further reduction of output noise. Designed specifically for hand-held and battery-powered devices, the MIC5250 provides TTL logic compatible enable pins. When disabled, power consumption drops nearly to zero. The MIC5250 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. Key features include current limit, thermal shutdown, pushpull outputs for faster transient response, and active clamps to speed up device turnoff. Available in the 10-lead MSOP (micro-shrink-outline package), the MIC5250 also offers a range of fixed output voltages.
Features
Ultralow dropout—100mV @ 100mA Ultralow noise—30µV(rms) Stability with ceramic, tantalum, or aluminum electrolytic capacitors Load independent, ultralow ground current 150mA output current Current limiting Thermal Shutdown Tight load and line regulation “Zero” off-mode current Fast transient...