MIC5282
120VIN, 50mA, Ultra-Low IQ, High-PSRR
Linear Regulator
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0 800 • fax + 1 (408) 474-1000 • http://www.micrel.com
General Description
The MIC5282 high-performance linear regulator offers a
very-wide input operating voltage range, up to 120V DC,
and supplies an output current of up to 50mA.
Ideal for high input voltage applications such as industrial
and telecom, the MIC5282 offers ±3% initial accuracy,
extremely high-power supply rejection ratio (80dB at
10kHz) and ultra-low quiescent current of 6µA. The
MIC5282 is optimized for high-voltage line transients,
making it ideal for harsh environment applications.
The MIC5282 is offered in both fixed output voltage
(3.3V/5.0V) and adjustable output voltage (1.27V to 5.5V)
options.
The MIC5282 operates over a −40°C to +125°C
temperature range and is available in lead-free, RoHS-
compliant, 8-pin ePad MSOP and 8-pin MSOP packages.
Data sheet and support documentation are found on the
Micrel website: www.micrel.com.
Features
• Wide input voltage range: 6V to 120V DC
• Ultra-low quiescent current: 6µA
• 50mA guaranteed output current
• Adjustable output from 1.27V to 5.5V
• Withstands up to +120V DC at the input
• Stable with ceramic capacitors
• Ultra-high PSRR (80dB at 10kHz)
• Ultra-high line rejection (load dump)
• High output accuracy:
– ±3% initial accuracy
• Thermal-shutdown and current-limit protection
• Thermally-efficient, 8-pin MSOP and 8-pin ePad MSOP
packages
Applications
• Industrial
• Remote keyless entry power supply
• Telecom
• Off-line power supplies
___________________________________________________________________________________________________________
Typical Applications
Quiescent Supply Current
vs. Input Vol tage
0
2
4
6
8
10
12
0 20 40 60 80 100 120
I NPUT VO LT AGE (V)
Q UIESCENT CURRENT (µ A)
V
OUT
= 5V
I
OUT
= 0
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Ordering Information
Part Number Output Voltage Top Mark Temperature Range Package Lead Finish
MIC5282YMME Adjustable A882
–40°C to +125°C 8-Pin ePad MSOP Pb-Free
MIC5282-3.3YMME 3.3V 882S
–40°C to +125°C 8-Pin ePad MSOP Pb-Free
MIC5282-5.0YMME 5.0V 5882
–40°C to +125°C 8-Pin ePad MSOP Pb-Free
MIC5282YMM Adjustable
− –40°C to +125°C 8-Pin MSOP Pb-Free
MIC5282-3.3YMM 3.3V − –40°C to +125°C 8-Pin MSOP Pb-Free
MIC5282-5.0YMM 5.0V − –40°C to +125°C 8-Pin MSOP Pb-Free
Pin Configur ation
8-Pin ePAD MSOP
MIC5282-x.xYMME
(TOP VIEW)
8-Pin MSOP
MIC5282-x.xYMM
(TOP VIEW)
8-Pin ePAD MSOP
MIC5282YMME
(TOP VIEW)
8-Pin MSOP
MIC5282YMM
(TOP VIEW)
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Pin Description
Pin
MIC5282YMME MIC5282-x.xYMME MIC5282YMM MIC5282-x.xYMM Name Function
1 1 1 1 VIN
Supply Voltage Input. Connect 1µF
capacitor from VIN to GND.
2, 3, 7 2, 3, 7 2, 3, 7 2, 3, 7 NC Not internally connected. Connect
NC to GND or leave unconnected.
4 4 4 4 CPSRR
Bypass Capacitor Connection.
Connect 0.1µF capacitor from
CPSRR to GND.
5 5 5 5 GND Ground.
6 − 6 − FB Feedback Connection. For external
resistor divider to set VOUT.
− 6 − 6 SNS
Sense input. Connect SNS to
VOUT.
8 8 8 8 VOUT
Regulator Output. Connect 10µF
capacitor from VOUT to GND.
EP EP − − EP Exposed Pad (ePad) for Thermal
Relief. Connect EP to GND.
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Absolute Maximum Ratings(1)
VIN to GND................................................... –0.3V to +125V
VCPSRR to GND..................................................–0.3 to +14V
VFB, VSNS, VOUT to GND ................................... –0.3V to +6V
Lead Temperature (soldering, 10s).......................... +260°C
Junction Temperature .........................–40°C ≤ TJ ≤ +125°C
Storage Temperature .........................–65°C ≤ TA ≤ +150°C
ESD Ratings(4)
HBM......................................................................... 2kV
MM.........................................................................200V
Operating Ratings(2)
VIN ................................................................. +6V to +120V
VOUT Adjust Range ..................................... +1.27V to +5.5V
Junction Temperature ......................... –40°C ≤ TJ ≤ +125°C
Power Dissipation (PD)........................... Internally Limited(3)
Junction Thermal Resistance (θJA)
8-pin ePad MSOP..............................................64°C/W
8-pin MSOP .....................................................160°C/W
Electrical Characteristics(5)
VIN = 12V, CIN = 1.0µF, CPSRR = 0.1µF, COUT = 10µF, VOUT = 5.0V or 3.3V, IOUT = 100µA, TA = 25°C, bold values indicate
–40°C ≤ TJ ≤ +125°C, unless noted.
Parameter Condition Min. Typ. Max. Units
Power Supply Input
Input Voltage Range(6) 6 120 V
Quiescent Supply Current(7) IOUT = 0 6 11 µA
Output Voltage
Adjustable 1.27 5.5
3.2 3.3 3.4
Fixed 3.3V 3.13 3.3 3.47
4.85 5.0 5.15
Output Voltage
Fixed 5.0V 4.75 5.0 5.25
V
-3 +3 %
Output Voltage Accuracy Variation from nominal VOUT -5 +5 %
ePad -1.0 0.5 +1.0
Load Regulation IOUT = 100µA to 50mA
non-ePad -1.2 0.6 +1.2 %
Line Regulation(8) V
IN = 10V to 120V -0.5 0.04 +0.5 %/V
Feedback Input (Adjustable)
1.232 1.270 1.308
FB Voltage 1.206 1.270 1.333 V
FB Current VFB = 1.27V 3.2 nA
Current Limit
Current Limit VOUT = 0V 60 125 260 mA
Ripple Rejection
100Hz ≤ f ≤ 1kHz 65 dB
1kHz ≤ f ≤ 5kHz 75 dB
5kHz ≤ f ≤ 40kHz 80 dB
Power Supply Rejection Ratio(9)
40kHz ≤ f ≤ 1MHz 90 dB
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Electrical Characteristics(5) (Continued)
VIN = 12V, CIN = 1.0µF, CPSRR = 0.1µF, COUT = 10µF, VOUT = 5.0V or 3.3V, IOUT = 100µA, TA = 25°C, bold values indicate
–40°C ≤ TJ ≤ +125°C, unless noted.
Parameter Condition Min. Typ. Max. Units
Power Dropout Voltage
Dropout Voltage IOUT = 50mA 2 3 V
Thermal Protection
Thermal-Shutdown Temperature TJ rising 157 °C
Thermal-Shutdown Hysteresis 15 °C
Notes:
1. Exceeding an 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 at any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. Exceeding the maximum allowable power
dissipation results in excessive die temperature, and causes the regulator to enter thermal shutdown.
4. Devices are ESD sensitive; use proper handling precautions.
5. Specifications are for packaged products only.
6. Assure that VIN ≥ (VOUT + 3V) and VIN ≥ 6V.
7. Quiescent current is specified for the adjustable option. The fixed options will add approximately 1µA due to the internal feedback resistors.
8. Line regulation is a percentage of VOUT.
9. See Typical Characteristics Curve on Pg. 8
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Typical Characteristics
Quiescent Suppl y C urre nt
vs. Input Voltage
0
2
4
6
8
10
12
0 20 40 60 80 100 120
INPUT VOLTAGE ( V)
Q UIESCENT CURRENT (µA)
VOUT = 5V
IOUT = 0
Qui escent Supply Current
vs. Temperature
0
2
4
6
8
10
12
-50 -25 0 25 50 75 100 125
TEMPERATURE (° C)
Q UIESCE NT CURRE NT (µA)
V
IN
= 12V
V
OUT
= 5V
I
OUT
= 0mA
Output Voltage
vs. Input Voltage
4.85
4.90
4.95
5.00
5.05
5.10
5.15
0 2040608010012
I NPUT VOLTAGE ( V)
O UTPUT VOLTAG E ( V)
0
V
IN
= 12V
V
OUT
= 5V
I
OUT
= 5mA
Output Voltage
vs. Output Current
4.85
4.90
4.95
5.00
5.05
5.10
5.15
0 102030405
O UT PUT CURRE NT (mA)
O UTPUT VOLTAG E (V)
0
V
IN
= 12V
V
OUT
= 5V
Out put Voltage
vs. Temperature
4.85
4.90
4.95
5.00
5.05
5.10
5.15
-50 -25 0 25 50 75 100 125
TEMPERATURE ( °C)
O UT PUT V OLTAGE ( V)
V
IN
= 12V
V
OUT
= 5V
I
OUT
= 5mA
Dropout Voltage
vs. O utput Current
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 102030405
O UT P UT CURRE NT (mA)
DROPOUT VOLTAGE (V)
0
V
OUT
= 5V
Dropout Volt age
vs. Temp erature
0
1
2
3
4
-50 -25 0 25 50 75 100 125
TEMPERATURE (° C)
DROPOUT VOLTAGE (V)
V
OUT
= 5V
I
OUT
= 50mA
Feedback Pin Voltage
vs. Input Voltage
1.260
1.265
1.270
1.275
1.280
0 2040608010012
I NPUT VO LT AGE (V)
FB PIN VO LTAG E ( V)
0
V
OUT
= 5V
I
OUT
= 5mA
Feedback Pi n Current
vs. Input Voltage
0
5
10
15
20
0 20 40 60 80 100 120
I NPUT VO L TAGE (V)
FB PIN CURRENT ( nA)
V
FB
= 1.27V
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Typical Characteristics (Continued)
Feedback Pin Voltage
vs. Temp erature
1.24
1.25
1.26
1.27
1.28
1.29
1.30
1.31
1.32
-50 -25 0 25 50 75 100 125
TEM PERATURE (°C)
FB PIN VOLTAGE ( V)
V
IN
= 12V
V
OUT
= 5V
I
OUT
= 5mA
Feedback Pin Current
vs. Temperature
0
2
4
6
8
10
-50 -25 0 25 50 75 100 125
TEMPERA TURE ( ° C)
FB PI N CURRENT (n A)
V
IN
= 12V
V
ADJ
= 1.27V
I
OUT
= 0
Feedback Pin Vol tage
vs. Output Current
1.25
1.26
1.27
1.28
1.29
1.30
0 102030405
O UT PUT CURRENT ( mA )
FB PI N VOLTAG E ( V)
0
V
IN
= 12V
V
OUT
= 5V
Current Limi t
vs. Temperature
0
50
100
150
200
250
-50 -25 0 25 50 75 100 125
TEMPERA TURE ( ° C)
CURRENT LIMIT ( mA)
V
IN
= 12V
V
OUT
= 0V
Line Regul ation
vs. Temperature
-0.0010
-0.0005
0.0000
0.0005
0.0010
-50 -25 0 25 50 75 100 125
TEM PERA TURE (°C)
LINE REGULAT IO N (%/V)
V
IN
= 10V to 120V
V
OUT
= 5V
I
OUT
= 100uA
Load Regulation
vs. Temperature
0.00
0.25
0.50
0.75
1.00
-50 -25 0 25 50 75 100 125
TEMPERATURE (° C)
LOAD REGULATION (% )
V
IN
= 12V
V
OUT
= 5V
I
OUT
=100uA to 50mA
Power Dissipation
vs. Output Current
0.0
0.1
0.2
0.3
0.4
0.5
0 102030405
O UT PUT CURRENT ( mA )
POWER DISSI P AT I ON ( W )
0
V
IN
= 12V
V
OUT
= 5V
Case Temperature* (MME)
vs. Output Current
0
10
20
30
40
50
0 102030405
O UT P UT CURRE NT (mA)
CASE TEM PERATURE ( °C)
0
V
IN
= 12V
V
OUT
= 5V
PSRR vs. Frequen cy
-120
-100
-80
-60
-40
-20
0
20
40
0.01 0.1 1 10 100 1000
FREQUENCY ( k Hz)
RI PPLE REJ ECTI ON (d B)
Gain (dB)
V
IN
=12V
V
OUT
= 5.0V
I
OUT
= 50mA
C
IN
= NONE
C
PSRR
= 0.1µF
C
OUT
=10µF
Case Temperature*: The temperature measurement was taken at the hottest point on the MIC5282 case mounted on a 2.25 square inch PCB at an
ambient temperature of 25°C; see “Thermal Measurement” section. Actual results will depend upon the size of the PCB, ambient temperature and
proximity to other heat emitting components.
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Functional Characteristics
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Functional Characteristics (Continued)
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Detailed Description
The MIC5282 voltage regulator accepts a 6V to 120V input
and has an ultra-low 6µA typical quiescent current while
offering an excellent line transient response and PSRR.
These features make it ideal for harsh, noisy
environments. All options of the device offer 50mA of
output current. The MIC5282YMM and MIC5282YMME
offer an adjustable output voltage from 1.27V to 5.5V. The
MIC5282-3.3YMME and MIC5282-3.3YMM offer fixed
3.3V outputs and the MIC5282-5.0YMME and MIC5282-
5.0YMM offer fixed 5.0V outputs. The YMME packaged
devices feature a heat slug to more effectively remove
heat from the die.
Applications Information
Thermal Protection
MIC5282 has internal thermal shutdown to protect it from
excessive heating of the die. When the junction
temperature exceeds approximately +155°C, the output is
disabled and the device begins to cool down. The device
turns back on when the junction temperature cools by
15°C. This will result in a cycled output during continuous
thermal-overload conditions.
Current Limit
MIC5282 features output current-limit protection. The
output sustains a continuous short circuit to GND without
damage to the device, but thermal shutdown often results.
Input Capacitor
Connect a 1.0µF capacitor from VIN to GND. Micrel
recommends the C5750X7R2E105M, 1.0µF, 250V
capacitor made by TDK. When using a different capacitor,
assure that the voltage rating of the capacitor exceeds any
potential transient.
CPSRR Capacitor
Connect a 0.1µF capacitor from CPSRR to GND to
maintain high power supply rejection. The voltage rating of
the capacitor must be at least 14V.
Output Capacitor
Connect a 10µF capacitor from VOUT to GND. Assure that
the voltage rating of the capacitor exceeds the designed
output voltage of the MIC5282.
Output Voltage Setting
For the MIC5282YMME and MIC5282YMM, VOUT is
programmed from 1.27V to 5.5V using:
⎟
⎠
⎞
⎜
⎝
⎛+×= 1
R2
R1
VV REFOUT
where VREF = 1.27V, and R1 and R2 are shown in the
Typical Applications circuit.
Thermal Measurements
It is always wise to measure an IC’s case temperature to
make sure that it is within operating limits, but it is easy to
get erroneous results. The standard thermal couple that
comes with many voltage meters uses a large wire gauge
that behaves like a heat-sink, resulting in artificially low
case temperature measurements. Use a thermocouple of
36-gauge wire or smaller, such as the Omega (5SC-TT-K-
36-36), to minimize the heat-sinking effect. Also, apply
thermal compound to maximize heat transfer between the
IC and the thermocouple.
An infrared thermometer is a recommended alternative.
The IR thermometer from Optris has a 1mm spot size,
ideal for monitoring small surface mount packages. Also,
the optional stand makes it easy to keep the beam on the
IC for long periods of time.
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Functional Diagram
MIC5282 Adjustable Version
MIC5282 Fixed Version
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MIC5282 Evaluation Board Schematic
MIC5282 Evaluation Board Schematic
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Bill of Materials
Item Part Number Manufacturer Description Qty.
C1 C5750X7R2E105M TDK(1) 1.0µF, 250V, 20%, X7R capacitor (2220) 1
C2 08053C104KAT2A AVX(2) 0.1µF 25V 20%, X7R capacitor (0805) 1
C3 0805ZD106KAT2A AVX(2) 10µF, 10V, 20%, X5R, capacitor (0805) 1
C4 OPEN Panasonic(3) 100µF, 160V, 20% capacitor (ALU, 0.492"diameter can 0.197"lead
spacing - Part # ECA-2CM101) 0
C5 OPEN ANY Capacitor 0
R1 CRCW06030000F Vishay/Dale(4) 0Ω, 1% resistor, 0603 1
R2 CRCW06032942F Vishay/Dale(4) 29.4kΩ, 1% resistor, 0603 1
R3 CRCW06031002F Vishay/Dale(4) 10.0kΩ, 1% resistor, 0603 1
R4 CRCW06031822F Vishay/Dale(4) 18.2kΩ, 1%, resistor, 0603 1
R5 CRCW06033012F Vishay/Dale(4) 30.1kΩ, 1% resistor chip, 0603 1
R6 CRCW06036982F Vishay/Dale(4) 69.8kΩ, 1%, resistor, 0603 1
U1 MIC5282YMME Micrel(5) 120VIN, 50mA, Ultra-Low IQ, High-PSRR Linear Regulator 1
Notes:
1. TDK: www.tdk.com.
2. AVX.: www.avx.com.
3. Panasonic: www.panasonic.com.
4. Vishay Tel: www.vishay.com.
5. Micrel, Inc.: www.micrel.com.
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PCB Evaluation Board Layout
Top Layer Silk Screen
Top Layer Traces
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PCB Evaluation Board Layout (Continued)
Bottom Layer Traces
Bottom Layer Silk Screen
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PCB Evaluation Board Layout (Continued)
EV Board Dimensions
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Package Information
8-Pin MSOP
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Package Information (Continued)
8-Pin Exposed Pad (ePad) MSOP
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Recommended Landing Pattern
8-Pin MSOP
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Recommended Landing Pattern (Continued)
8-Pin Exposed Pad (ePad) MSOP
Red circle indicates Thermal Via. Size should be .300mm − .350mm in diameter, 1.00mm pitch, and it should be
connected to GND plane for maximum thermal performance.
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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 makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. 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
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical impla
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.
can nt
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