MAQ5280: 25mA, 120V, Low IQ, High PSRR LDO - Micrel - #1

Text version of the page

MAQ5280 25mA, 120V, Low IQ, High PSRR LDO Automotive Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com October 2008 M9999-102708-B General Description The MAQ5280 is a high performance low dropout regulator, offering a very low noise output with a very wide input voltage operating range, up to 120V DC input voltage. Ideal for high input voltage applications such as automotive and telecom, the MAQ5280 offers 2% initial accuracy, extremely high power supply rejection ratio (PSRR > 80dB) and low ground current (typically 31ìA). The MAQ5280 can also be put into a zero-off-mode current state, drawing a minuscule amount of current when disabled. The MAQ5280 has a very wide input voltage range, with a DC rating from –24V to 120V. This wide input range covers the automotive load dump range and the MAQ5280 is optimized for line transient response, making it ideal for harsh environment applications. The MAQ5280 has an operating junction temperature range of –40°C to +125°C and is available in an adjustable output voltage version in a lead-free (RoHS compliant) 8- pin EPAD SOIC packaging. This part is also AEC-Q100 Qualified for automotive applications. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Features • Wide Input Voltage Range: 4.5V to 120V DC • Very Low Quiescent Current: 31ìA typical • 25mA guaranteed output current • Adjustable Output from 1.215V to 5V • DC voltage protection down to -24V • Ability to withstand up to +120V DC at the input • Stable with ceramic output capacitors • Ultra High PSRR > 80dB for RF Applications • High output accuracy – ± 2% initial accuracy – ± 3% over temperature (–40°C to +125°C) • Thermal shutdown and current limit protection • Thermally efficient 8-pin EPAD SOIC package • AEC-Q100 qualified Applications • Automotive Systems • Industrial Applications • Remote Keyless Entry Power Supply • Telecom Applications • Off-line Power Supplies ___________________________________________________________________________________________________________ Typical Application Automotive Application