Micrel MAQ5300 Automotive qualified single output 300ma î¼cap ldo Datasheet

MAQ5300
Automotive Qualified Single Output 300mA
µCap LDO
General Description
Features
The MAQ5300 is an automotive-qualified, ultra-small,
ultra-low dropout CMOS regulator (ULDO) that is ideal for
today’s most demanding automotive applications including
infotainment, camera module, image sensors, and
anywhere PCB space is limited. It offers extremely low
dropout voltage, very low output noise and can operate
from a 2.3V to 5.5V input while delivering up to 300mA.
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The MAQ5300 offers 2% initial accuracy, low ground
current (typically 85µA total), thermal shutdown, and
current-limit protection. The MAQ5300 can also be put into
a zero-off-mode current state, drawing no current when
disabled.
The MAQ5300’s operating junction temperature range is
–40°C to +125°C and it is available in fixed output voltages
in a lead-free (RoHS-compliant) 6-pin 2mm × 2mm DFN
package.
Datasheets and support documentation are available on
Micrel’s website at: www.micrel.com.
Small 2mm × 2mm DFN package
Low dropout voltage: 100mV at 300mA
Output noise 120µVRMS
Input voltage range: 2.3V to 5.5V
300mA guaranteed output current
Stable with ceramic output capacitors
Low quiescent current: 85µA total
30µs turn-on time
High output accuracy
− ±2% initial accuracy
− ±3% over temperature
• Thermal shutdown and current-limit protection
Applications
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CMOS image sensors
Backup camera modules
GPS Receivers
Infotainment
Typical Application
MAQ5300 Dropout Voltage
CMOS Sensor Application
DROPOUT VOLTAGE (mV)
120
100
80
60
VOUT = 2.8V
40
20
0
0
50
100
150
200
250
300
OUTPUT CURRENT (mA)
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 10, 2015
Revision 2.3
Micrel, Inc.
MAQ5300
Ordering Information(1)
Marking
Code
Voltage
Temperature Range
Package
Lead Finish
MAQ5300-1.5YML
QMF
1.5V
–40°C to +125°C
6-Pin 2mm × 2mm DFN
Pb-Free
MAQ5300-1.8YML
QMG
1.8V
–40°C to +125°C
6-Pin 2mm × 2mm DFN
Pb-Free
MAQ5300-2.5YML
QMJ
2.5V
–40°C to +125°C
6-Pin 2mm × 2mm DFN
Pb-Free
MAQ5300-2.8YML
QMM
2.8V
–40°C to +125°C
6-Pin 2mm × 2mm DFN
Pb-Free
MAQ5300-2.85YML
QMN
2.85V
–40°C to +125°C
6-Pin 2mm × 2mm DFN
Pb-Free
MAQ5300-3.0YML
QMP
3.0V
–40°C to +125°C
6-Pin 2mm × 2mm DFN
Pb-Free
MAQ5300-3.3YML
QMS
3.3V
–40°C to +125°C
6-Pin 2mm × 2mm DFN
Pb-Free
Part Number
Note:
1. Other voltages are available. Contact Micrel for details.
Pin Configuration
6-Pin 2mm × 2mm DFN (ML)
(Top View)
Pin Description
Pin Number
Pin Name
1
EN
2
GND
Power Ground.
3
VIN
Supply Voltage (Input): Decouple with a minimum 1µF ceramic capacitor.
4
VOUT
5
NC
No Connection.
6
NC
No Connection.
EPAD
EPAD
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Pin Function
Enable (Input): Active High. High = on, low = off. Do not leave this pin floating.
Regulated Output Voltage (Output): Decouple with a minimum 1µF ceramic capacitor.
Exposed pad heat sink. Internally connected to ground. Connect to ground copper on
board to lower thermal resistance.
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Micrel, Inc.
MAQ5300
Absolute Maximum Ratings(2)
Operating Ratings(3)
Supply Voltage (VIN) ............................................. 0V to +6V
Enable Input (VEN). ....................................... 0V to VIN+0.3V
(4)
Power Dissipation ................................... Internally Limited
Lead Temperature (soldering, 10s) ............................ 260°C
Storage Temperature (TS) ............................–65°C to +150°
ESD Rating
(5)
HBM ...................................................................... 2kV
MM ......................................................................... 100V
Supply Voltage (VIN) ..................................... +2.3V to +5.5V
Enable Input (VEN) .................................................. 0V to VIN
Ambient Temperature (TA) ........................ –40°C to +125°C
Junction Temperature (TJ) ........................ –40°C to +125°C
Junction Thermal Resistance
6-pin 2mm × 2mm DFN (θJA) ............................. 90°C/W
Electrical Characteristics(6)
VIN = VOUT+1V; COUT = 1.0µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C≤ TJ ≤ +125°C, unless noted.
Parameter
Condition
Output Voltage Accuracy
Min.
Typ.
Max.
Units
Variation from nominal VOUT
–2
+2
%
Variation from nominal VOUT; –40°C to +125°C
–3
+3
%
VIN = VOUT +1V to 5.5V; IOUT = 100µA
0.02
0.6
%/V
IOUT = 100µA to 300mA
0.03
0.6
%
IOUT = 150mA
IOUT = 300mA
50
100
100
200
mV
mV
IOUT = 0 to 300mA, EN = High
85
120
µA
Ground Pin Current in Shutdown
VEN = 0V
0.1
1
µA
Ripple Rejection
f = up to 1kHz; COUT = 1.0µF
f = 1kHz to 20kHz; COUT = 1.0µF
65
42
Current Limit
VOUT = 0V
Output Voltage Noise
COUT =1µF, 10Hz to 100kHz
Line Regulation
Load Regulation
Dropout Voltage
(7)
(8)
Ground Pin Current
(9)
325
650
dB
dB
875
120
mA
µVRMS
Enable Input
Enable Input Voltage
Enable Input Current
Turn-on Time
0.2
Logic Low
1.1
Logic High
V
V
VIL < 0.2V
0.01
µA
VIH > 1.0V
0.01
µA
100
COUT = 1.0µF
30
µs
TJ Rising
155
°C
5
°C
Thermal Protection
Over-temperature Shutdown
Over-temperature Shutdown Hysteresis
Notes:
2. Exceeding the absolute maximum ratings may damage the device.
3. The device is not guaranteed to function outside its operating ratings.
4. The maximum allowable power dissipation for any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. Exceeding the maxmimum allowable
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
5. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
6. Specification for packaged product only.
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.
8. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential.
9. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin
current.
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MAQ5300
Typical Characteristics
Ground Pin Current vs.
Output Current
Ground Pin Current
vs. Temperature
100
100
95
80
60
40
VIN = VOUT+1
VOUT = 2.8V
COUT = 1µF
20
90
300mA
85
80
100µA
75
70
VIN = VOUT+1
VOUT = 2.8V
COUT = 1µF
65
0
50
100
150
200
250
-40
300
-20
0
40
60
80
DROPOUT VOLTAGE (mV)
-50
-40
-30
VIN = 3.8V
VOUT = 2.8V
COUT = 1µF
IOUT = 300mA Res. Load
100
1000
150mA
50
50mA
100µA
25
-20
0
Output Voltage vs.
Output Current
OUTPUT VOLTAGE (V)
2.80
2.79
VIN == V
Vin
Vout+1V
OUT+1V
Vout
= 2.8V
2.8V
V
OUT =
Cout=1uF
C
OUT = 1µF
20
40
60
80
150
200
250
OUTPUT CURRENT (mA)
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50
VIN = VOUT+1
VOUT = 2.8V
COUT = 1µF
25
100 120 140
50
0
300
3
3.2
2.5
100µA
2
1.5
300mA
1
1
2
3
4
SUPPLY VOLTAGE (V)
4
150
200
250
300
5
Output Voltage vs.
Temperature
3
2.8
2.6
VIN = VOUT +1V
VOUT = 2.8V
COUT = 1µF
IOUT = 100µA
2.4
2.2
VOUT = 2.8V
COUT = 1µF
0
100
OUTPUT CURRENT (mA)
3.4
0
100
75
3.5
0.5
2.77
50
100
Output Voltage vs.
Supply Voltage
2.81
0
125
TEMPERATURE (C)
2.82
5.5
0
-40
2.83
5
4.5
300mA
75
10000
4
Dropout Voltage
vs. Output Current
100
FREQUENCY (kHz)
2.78
3.5
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
10
VIN = VOUT+1
VOUT = 2.8V
COUT = 1µF
65
3
0
1
100µA
70
150
VOUT = 2.8V
COUT = 1 F
125
-60
0.1
75
100 120 140
DROPOUT VOLTAGE (mV)
-70
PSRR (dB)
20
150
-80
0
0.01
80
Dropout Voltage
vs. Temperature
Power Supply
Rejection Ratio
-10
300mA
85
TEMPERATURE (C)
OUTPUT CURRENT (mA)
-20
90
60
60
0
OUTPUT VOLTAGE (V)
GROUND CURRENT (µA)
95
100
GROUND CURRENT (µA)
GROUND CURRENT (µA)
120
Ground Pin Current vs.
Supply Voltage
2
6
-40
-20
0
20
40
60
80
100 120 140
TEMPERATURE (C)
Revision 2.3
Micrel, Inc.
MAQ5300
Typical Characteristics (Continued)
Current Limit
vs. Supply Voltage
Output Noise Spectral Density
700
10
VOUT = 0V
TA = 25ºC
1
NOISE µV/√Hz
CURRENT LIMIT (mA)
680
660
640
0.1
0.01
620
600
3
3.5
4
4.5
SUPPLY VOLTAGE (V)
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5
5.5
VIN = VOUT+1
VOUT = 2.8V
COUT = 1µF
LOAD = 50Ω
0.001
0.01
0.1
1
10
100
1000
FREQUENCY (Hz)
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MAQ5300
Functional Characteristics
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MAQ5300
Functional Diagram
Figure 1. MAQ5300 Block Diagram
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MAQ5300
similar low impedance trace. If a ground plane is used,
the capacitor ground terminal and GND pin should be
connected to the ground plane with a via. Refer to the
PCB recommended layout section for a typical layout.
Application Information
Enable/Shutdown
The MAQ5300 comes with an active-high enable pin that
allows the regulator to be disabled. Forcing the enable
pin low disables the regulator and sends it into a “zero”
off-mode-current state. In this state, current consumed by
the regulator goes nearly to zero. Forcing the enable pin
high enables the output voltage. The active-high enable
pin uses CMOS technology and the enable pin cannot be
left floating; a floating enable pin may cause an
indeterminate state on the output.
X7R dielectric-type ceramic capacitors are used because
of their temperature performance. X7R-type capacitors
have a stable dielectric and change capacitance by +/15% over their operating temperature range. As with the
input capacitor, X5R capacitors may not meet the
maximum ambient temperature specification and Z5U,
Y5V and other lower quality dielectric capacitors must not
be used to prevent stability and regulation problems.
Additional high-frequency capacitors, such as smallvalued NPO dielectric-type capacitors, help filter out highfrequency noise.
Input Capacitor
The MAQ5300 is a high-performance, high bandwidth
device that requires a well-bypassed input supply for
optimal performance. A minimum 1µF X7R ceramic
capacitor is required from the VIN pin to ground for
stability and decoupling. The capacitor must be placed
next to the VIN pin and the VIN pin to capacitor
connection routed with a wide (low inductance) PCB
trace. The ground terminal of the capacitor is connected
directly to the GND pin with a similar low impedance
trace. If a ground plane is used, the capacitor ground
terminal and GND pin should be connected to the ground
plane with a via. Refer to the PCB recommended layout
section for a typical layout. X7R dielectric-type ceramic
capacitors are used because of their –55°C to 125°C
temperature range. X7R-type capacitors have a stable
dielectric and change capacitance by ±15% over their
operating temperature range. X5R dielectrics have a
maximum temperature of only 85°C, while Z5U and Y5V
and other lower quality dielectric capacitors must not be
used as their capacitance range changes by as much as
50% to 60%. This change may cause problems with
stability and regulation. Additional high-frequency
capacitors, such as small-valued NPO dielectric-type
capacitors, help filter out high-frequency noise.
No-Load Stability
The MAQ5300 is stable when operating at no load.
Dropout Voltage
An LDO’s dropout voltage is the minimum operating
voltage difference between VIN and VOUT at a given output
current. Once the dropout voltage is reached, lowering
the input voltage will cause the output voltage to
decrease and the LDO will cease to operate properly.
The typical and worst case dropout voltages are listed in
the electrical characteristic table.
Thermal Considerations
The MAQ5300 is designed to provide 300mA of
continuous current. Maximum ambient operating
temperature can be calculated based on the output
current and the voltage drop across the part. For
example, given that the input voltage is 3.6V, the output
voltage is 2.8V and the output current equals 300mA.
The actual power dissipation of the regulator circuit can
be determined using the equation:
PD = (VIN – VOUT) IOUT + VIN IGND
Larger value, ceramic, tantalum and aluminum
electrolytic capacitors may be used at the input, in
parallel with the ceramic input capacitor described above.
Because this device is CMOS and the ground current is
typically <100µA over the load range, the power
dissipation contributed by the ground current is < 1% and
can be ignored for this calculation.
Output Capacitor
The MAQ5300 requires an X7R ceramic output capacitor
of 1µF or greater to maintain stability. The LDO is
optimized for use with low-ESR ceramic chip capacitors.
Higher ESR capacitors, such as aluminum electrolytic
and tantalum may cause high frequency oscillation. The
output capacitance can be increased, but performance
has been optimized for a 1µF ceramic output capacitor
and does not improve significantly with larger
capacitance.
PD = (3.6V – 2.8V) × 300mA
PD = 0.24W
To determine the maximum ambient operating
temperature of the package, use the junction-to-ambient
thermal resistance of the device and the following basic
equation:
The capacitor must be placed next to the VOUT pin and
the VOUT pin to capacitor connection routed with a wide
(low inductance) PCB trace. The ground terminal of the
capacitor is connected directly to the GND plane with a
July 10, 2015
PD(MAX) =
8


TJ(MAX) - TA
JA
Revision 2.3
Micrel, Inc.
MAQ5300
TJ(max) = 125°C, the maximum junction temperature of the
die, and θJA is the thermal resistance = 90°C/W.
Therefore, a 2.8V application with 300mA of output
current can accept an ambient operating temperature of
103°C.
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit. The junction-toambient thermal resistance is 90°C/W.
A via can be placed under the package to maximize
thermal performance. Refer to the PCB Layout
Recommendations section for a typical layout.
The maximum power dissipation must not be exceeded
for proper operation.
For a full discussion of heat sinking and thermal effects
on voltage regulators, refer to the “Regulator Thermals”
section of Micrel’s Designing with Low-Dropout Voltage
Regulators handbook. This information can be found on
Micrel's website at:
For example, when operating the MAQ5300-2.8YML at
an input voltage of 3.6V and 300mA load, the maximum
ambient operating temperature TA can be determined as
follows:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
0.24W = (125°C – TA)/(90°C/W)
TA=103°C
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Micrel, Inc.
MAQ5300
Typical Application Schematic
Bill of Materials
Item
R1
Part Number
CRCW0603100KFKEA
Manufacturer
Vishay Dale
(11)
C1, C2
06036C105MAT2A
AVX
U1
MAQ5300-3.3YML
Micrel
(12)
(10)
Description
Qty.
100kΩ, 1%, 0603 resistor
1
1uF, 6.3V, X7R, 0603, Ceramic Capacitor
2
Automotive Qualified Single Output 300mA μCap LDO,
3.3V Fixed Output
1
Notes:
10. Vishay: www.vishay.com
11. AVX: www.avx.com
12. Micrel, Inc.: www.micrel.com
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MAQ5300
PCB Layout Recommendations
Top Layer
Bottom Layer
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MAQ5300
Package Information(13)
6-Pin 2mm x 2mm DFN (ML)
Note:
13. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.
July 10, 2015
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MAQ5300
Recommended Landing Pattern(13)
6-Pin 2mm x 2mm DFN (ML)
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Micrel, Inc.
MAQ5300
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide high performance linear and power, LAN, and timing & communications
markets. The Company’s products include advanced mixed-signal, analog & power semiconductors; high-performance communication, clock
management, MEMs-based clock oscillators & crystal-less clock generators, Ethernet switches, and physical layer transceiver ICs. Company
customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products.
Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and
advanced technology design centers situated throughout the Americas, Europe, and Asia. Additionally, the Company maintains an extensive network
of distributors and reps worldwide.
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this datasheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical
implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2014 Micrel, Incorporated.
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