MAQ5280 Datasheet PDF - MICREL

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MAQ5280
MICREL

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


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MAQ5280
25mA, 120V, Low IQ, 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.
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.
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: 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
Applications
Automotive Systems
Industrial Applications
Remote Keyless Entry Power Supply
Telecom Applications
Off-line Power Supplies
___________________________________________________________________________________________________________
Typical Application
www.DataSheet4U.com
Automotive Application
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



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Micrel, Inc.
Ordering Information
Part Number
MAQ5280YME
Voltage
Adj.
Temperature Range
–40° to +125°C
Package
8-Pin EPAD SOIC
MAQ5280
Lead Finish
Pb-Free
Pin Configuration
CBYP 1
VOUT 2
ADJ 3
GND 4
8 VIN
7 NC
6 NC
5 EN
8-Pin EPAD SOIC (ME)
Pin Description
Pin Number
1
2
3
4
5
6, 7
8
EP
Pin Name
CBYP
VOUT
ADJ
GND
EN
NC
VIN
Pin Function
Connect 10µF capacitor. Increases PSRR when VIN 6.5V.
Regulator Output Pin. Connect 2.2µF for better stable operation.
Connect pin 3 to external resistor divider to set VOUT.
Ground.
Enable pin. Enable Low turns part OFF, Enable High turns part ON.
Not internally connected.
Supply Input pin. Supply (Input): -24V to 120V input voltage.
Exposed Pad – Connect to Ground plane trace.
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October 2008
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Micrel, Inc.
MAQ5280
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ..................................... –24V to +120V
Enable Voltage (VEN)...................................... –1V
Power Dissipation (PD) ........................... Internally
to +120V
Limited(3)
Max Reflow Temperature (per IPC/JEDEC 20°C) ..... 260°C
ESStoDraRgeatTinegm(4p)..e..r.a..t.u..r.e...(.T..S..)....................................................–..6..5..°.C....t.o...+..1..5. 20k°CV
Operating Ratings(2)
Supply Voltage (VIN)...................................... 4.5V to +120V
Enable Voltage (VEN)........................................ 0V to +120V
Junction Temperature (TJ) ........................ –40°C to +125°C
Junction Thermal Resistance
EPAD SOIC-8 (θJA)............................................41°C/W
Electrical Characteristics(5)
VIN = 12V; VEN = 2V; COUT = 2.2µF; CBYP = 10µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless
noted.
Parameter
Output Voltage Accuracy
ADJ Pin Voltage
Line Regulation(6)
Load Regulation(7)
Dropout Voltage
Ground Pin Current
Ground Pin Current in Shutdown
Ripple Rejection
Current Limit
IDD Reverse Battery
IOUT Reverse Current
ADJ Pin Current
Output Voltage Noise
Enable Input
Enable Input Voltage
Enable Input Current
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Condition
Variation from nominal VOUT
Variation from nominal VOUT, –40°C to +125°C
ΔVIN = 6.5V to 120V
IOUT = 100µA to 25mA
IOUT = 100µA; VIN = 4.5V; Adjust Pin = 0V
IOUT = 10mA; VIN = 4.5V; Adjust Pin = 0V
IOUT = 25mA; VIN = 4.5V; Adjust Pin = 0V
IOUT = 100µA
IOUT = 25mA
VEN 0.3V
VEN 0.3V, –40°C to +125°C
f = up to 1kHz
VOUT = 0V; VIN = 4.5V
VOUT = 0V; VIN = 14.4V
VIN = –24V; VEN = 0.3V
VIN = 0V; VOUT = 5V; VEN = 0.3V
Logic Low
Logic High
VEN 0.3V; VIN = 12V
VEN 2.0V; VIN = 12V
VIN = 4.5V; VEN = 120V
COUT = 2.2µF; IOUT = 25mA
Min Typ
–2
–3
1.219
–0.5 0.04
–0.5 0.2
0 430
0 800
0 1100
0 31
0 260
0 0.02
0
80
40 70
70
0.4 0.03
3
3.3
120
Max
+2
+3
0.5
0.5
700
1000
1500
50
400
1
5
100
50
10
Units
%
%
V
%
%
mV
mV
mV
µA
µA
µA
µA
dB
mA
mA
µA
µA
nA
µVRMS
2.0
0 0.02
0 0.12
0 0.15
0.1 1
0.3
1
1
10
V
V
µA
µA
µA
ms
October 2008
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Micrel, Inc.
MAQ5280
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kin series with 100pF.
5. Specification for packaged product only.
6. Line regulation is a percentage of VOUT.
7. Regulation is measured at constant junction temperature using low duty cycle pulse testing; changes in output voltage due to heating effects are
covered by the thermal regulation specification.
www.DataSheet4U.com
October 2008
4 M9999-102708-B



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