Microchip | MIC5203-3.3YM4-TR

The MIC5203-3.3YM4 TR is a μCap 80 mA linear voltage regulator with very low dropout voltage (typically 20 mV at light loads and 300 mV at 80 mA) and very low ground current (225 μA at 20 mA output), offering better than 3% initial accuracy with a logic-compatible enable input.

The μCap regulator design is optimized to work with low-value, low-cost ceramic capacitors. The outputs typically require only 0.47 μF of output capacitance for stability. Designed especially for hand-held, battery-powered devices, the MIC5203 can be controlled by a CMOS or TTL compatible logic signal. When disabled, power consumption drops nearly to zero. If on-off control is not required, the enable pin may be tied to the input for 3-terminal operation. The ground current of the MIC5203 increases only slightly in dropout, further prolonging battery life. Key MIC5203 features include current limiting, over temperature shutdown, and protection against reversed battery.

Features:

• Tiny 4-lead and 5-lead surface-mount packages
• Wide Selection of output voltages
• Guaranteed 80 mA output
• Low quiescent current
• Low dropout voltage
• Tight load and line regulation
• Low temperature coefficient
• Current and thermal limiting
• Reversed input polarity protection
• Zero off-mode current
• Logic-controlled shutdown
• Stability with low-ESR ceramic capacitors

Applications:

• Cellular telephones
• Laptop, notebook, and palmtop computers
• Battery-powered equipment
• Bar code scanners
• SMPS post-regulator/dc-to-dc modules
• High-efficiency linear power supplies