MIC2219 Datasheet | Micrel Semiconductor

Micrel, Inc. Dynamically Adjustable Dual µCap LDO General Description The MIC2219 is a dual µCap low dropout regulator. The first regulator is capable of sourcing 150m A, while the second regulator can source up to 300m A. Ideal for battery operated applications, the MIC2219 offers 1% accuracy, extremely low dropout voltage (80m V @ 100m A), and extremely low ground current, only 48µA total. Equipped with TTL logic patible enable pins, the MIC2219 can be put into a zero-off-mode current state, drawing no current when disabled. Separate enable pins allow individual control of each output voltage. The additional feature incorporated in the MIC2219 is bringing out the feedback nodes to two external pins, allowing for dynamic adjustment of the LDO output voltages. The MIC2219 is a µCap design, operating with very small ceramic output capacitors for stability, reducing required board space and ponent cost. The MIC2219 is available in fixed output voltages in the 10-pin 3mm × 3mm MLF™ leadless package. Features - Input voltage range: 2.25V to 5.5V - Stable with ceramic output capacitor - 2 LDO outputs Output 1 - 150m A output current Output 2 - 300m A output current - Feedback pins externally accessible - Low dropout voltage of 80m V @ 100m A - Ultra-low quiescent current of 48µA total (24µA/LDO) - High output accuracy: +1.0% initial accuracy +2.0% over temperature - Thermal shutdown protection - Current limit protection - Tiny 10-pin 3mm × 3mm MLF™ package Applications - Cellular phones - Wireless modems - PDAs - LEDs Typical Application MIC2219-xx...