MAQ5280 Datasheet, PDF (1/14 Pages) Micrel Semiconductor – 25mA, 120V, Low IQ, High PSRR LDO

MAQ5280
25mA, 120V, Low I_Q, High PSRR LDO
Automotive
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.
Features
• Wide Input Voltage Range: 4.5V to 120V DC
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 31µA).
The MAQ5280 can also be put into a zero-off-mode
current state, drawing a minuscule amount of current when
disabled.
• Very Low Quiescent Current: 31µA 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
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.
• 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
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Typical Application
Automotive Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
October 2008
M9999-102708-B