Catalog
300mA uCap LDO w/ Programmable Power-On Reset Delay
Key Features
• * 300mA output current
• * High PSRR: 65dB at 120Hz
• * Stable with ceramic output capacitor
• * Power-on reset output with adjustable delay time
• * ±1.0% initial accuracy
• * ±3.0% over temperature
• * Low dropout voltage: 400mV at 300mA
• * Low quiescent current: 85mA
• * Zero off-mode current state
• * Thermal shutdown protection
• * Current limit protection
• * Tiny MSOP-8 package
Description
AI
The MIC5249 is an efficient, precise 300mA CMOS voltage regulator with power-on reset delay which can be implemented via an external capacitor. It offers 1% initial accuracy, extremely low dropout voltage (typically 400mV @ 300mA), and low ground current (typically 85mA) over load.
Designed specifically for noise-critical applications in handheld or battery-powered devices, the MIC5249 comes equipped with a noise reduction feature to filter the output noise via an external capacitor. Other features of the MIC5249 include a logic-compatible enable pin, current limit, thermal shutdown, ultra-fast transient response, and an active clamp to speed up device turnoff.
The MIC5249 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices.
