MAQ5280 Datasheet PDF - MICREL


Part Number MAQ5280
Description 25mA 120V - Low IQ High PSRR LDO
Page 14 Pages

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25mA, 120V, Low IQ, High PSRR LDO
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
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
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:
Wide Input Voltage Range: 4.5V to 120V DC
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
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
Automotive Systems
Industrial Applications
Remote Keyless Entry Power Supply
Telecom Applications
Off-line Power Supplies
Typical Application
Automotive Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
October 2008

MAQ5280 datasheet pdf
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MAQ5280 pdf
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