
Micrel
General Description
The MIC5248 is an efficient, precise CMOS voltage regulator with power good output. The MIC5248 offers better than 3% initial accuracy, and constant ground current (typically 100µA) over load.
The MIC5248 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices.
FEATUREs
• Power Good indicator
• Load independent, ultra-low ground current: 100µA
• 150mA output current
• Current limiting
• Thermal shutdown
• Tight load and line regulation
• “Zero” off-mode current
• Stability with low-ESR capacitors
• Fast transient response
• TTL-logic-controlled enable input
APPLICATIONs
• Processor power-up sequencing
• Laptop, notebook, and palmtop computers
• PCMCIA VCC and VPP regulation/switching