MIC5219 3.3 YM5 LG33 SOT23-5 3.3V 500 mA Peak Output LDO Regulator

Features
• 500 mA Output Current Capability
- SOT23-5 Package - 500 mA Peak
- 2 mm x 2 mm x 0.9 mm VDFN Package -
500 mA Continuous
- 2 mm x 2 mm x 0.6 mm Thin DFN Package -
500 mA Continuous
- MSOP-8 Package - 500 mA Continuous
• Low 500 mV Maximum Dropout Voltage at Full
Load
• Extremely Tight Load and Line Regulation
• Tiny SOT-23-5 and Power MSOP-8 Package
• Ultra-Low Noise Output
• Low Temperature Coefficient
• Current and Thermal Limiting
• Reversed-Battery Protection
• CMOS/TTL-Compatible Enable/Shutdown Control
• Near-Zero Shutdown Current
Applications
• Laptop, Notebook, and Palmtop Computers
• Cellular Telephones and Battery-Powered
Equipment
• Consumer and Personal Electronics
• PC Card VCC and VPP Regulation and Switching
• SMPS Post-Regulator/DC-to-DC Modules
• High-Efficiency Linear Power Supplies

General Description
The MIC5219 is an efficient linear voltage regulator
with high peak output current capability, very low
dropout voltage, and better than 1% output voltage
accuracy. Dropout is typically 10 mV at light loads and
less than 500 mV at full load.
The MIC5219 is designed to provide a peak output
current for start-up conditions where higher inrush
current is demanded. It features a 500 mA peak output
rating. Continuous output current is limited only by
package and layout.
The MIC5219 can be enabled or shut down by a
CMOS- or TTL-compatible signal. When disabled,
power consumption drops nearly to zero. Dropout
ground current is minimized to help prolong battery life.
Other key features include reversed-battery protection,
current limiting, overtemperature shutdown, and low
noise performance with an ultra-low noise option.
The MIC5219 is available in adjustable or fixed output
voltages in the space-saving 6-pin (2 mm × 2 mm)
VDFN, 6-pin (2 mm × 2 mm) Thin DFN, SOT23-5, and
8-pin power MSOP packages. For higher power
requirements see the MIC5209 or MIC5237.