MAQ5281 120V , 25mA, Ultra-Low I , High-PSRR IN Q Linear Regulator Automotive General Description Features AEC-Q100 qualified The MAQ5281 high-performance linear regulator offers a very-wide input operating voltage range, up to 120V DC, Wide input voltage range: 6V to 120V DC and supplies an output current of up to 25mA. Ultra-low quiescent current: 6A (typ) Ideal for high input voltage applications such as 25mA guaranteed output current automotive, industrial and telecom, the MAQ5281 offers Adjustable output from 1.27V to 5.5V 3% initial accuracy, extremely high-power supply Withstands up to +120V DC at the input rejection ratio (>90db) and ultra-low quiescent current of 6A. The MAQ5281 is optimized for high-voltage line Stable with ceramic capacitors transients, making it ideal for harsh environment Ultra-high PSRR >90dB applications. Ultra-high line transient rejection (load dump) The MAQ5281 is offered in both fixed output voltage High output accuracy: (3.3V/5.0V) and adjustable output voltage (1.27V to 5.5V) 3% initial accuracy options. Thermal-shutdown and current-limit protection The MAQ5281 operates over a 40C to +125C Thermally-efficient, 8-pin ePad MSOP package temperature range and is available in lead-free, RoHS- compliant, 8-pin ePad MSOP package. This part is also AEC-Q100 qualified for automotive applications. Applications Data sheet and support documentation are found on the Automotive Micrel website: www.micrel.com. Remote keyless entry power supply Telecom applications Typical Applications Quiescent Supply Current vs. Input Voltage 12 11 10 9 8 7 6 5 4 3 2 V = 5V OUT 1 I = 0 OUT 0 0 20 40 60 80 100 120 INPUT VOLTAGE (V) Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MAQ5281 Ordering Information Part Number Output Voltage Top Mark Temperature Range Package Lead Finish MAQ5281YMME Adjustable 7Q1A 40C to +125C 8-Pin ePad MSOP Pb-Free MAQ5281-3.3YMME 3.3V 7Q1S 8-Pin ePad MSOP Pb-Free 40C to +125C MAQ5281-5.0YMME 5.0V 7Q15 40C to +125C 8-Pin ePad MSOP Pb-Free Pin Configuration 8-Pin ePAD MSOP 8-Pin ePAD MSOP MAQ5281-x.xYMME MAQ5281YMME (TOP VIEW) (TOP VIEW) Pin Description Pin Name Function MAQ5281YMME MAQ5281-x.xYMME 1 1 VIN Supply Voltage Input. Connect 1F capacitor from VIN to GND. 2, 3, 7 2, 3, 7 NC Not internally connected. Connect NC to GND or leave unconnected. Bypass Capacitor Connection. Connect 0.1F capacitor from CPSRR to 4 4 CPSRR GND. 5 5 GND Ground. 6 FB Feedback Connection. For external resistor divider to set V . OUT 6 SNS Sense input. Connect SNS to VOUT. 8 8 VOUT Regulator Output. Connect 10F capacitor from VOUT to GND. EP EP ePad Exposed Pad (ePad) for Thermal Relief. Connect EP to GND. Revision 2.0 October 2, 2014 2