MIC5282 [MICREL]
Ultra-Low IQ, High-PSRR Linear Regulator;
| 型号： | MIC5282 |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | Ultra-Low IQ, High-PSRR Linear Regulator |
| 文件： | 总19页 (文件大小：940K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC5282
120VIN, 50mA, Ultra-Low IQ, High-PSRR
Linear Regulator
General Description
Features
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.
• 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:
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.
– ±3% initial accuracy
• Thermal-shutdown and current-limit protection
The MIC5282 operates over
a
−40°C to +125°C
• Thermally-efficient, 8-pin MSOP and 8-pin ePad MSOP
temperature range and is available in lead-free, RoHS-
compliant, 8-pin ePad MSOP and 8-pin MSOP packages.
packages
Data sheet and support documentation are found on the
Micrel website: www.micrel.com.
Applications
• Industrial
• Remote keyless entry power supply
• Telecom
• Off-line power supplies
___________________________________________________________________________________________________________
Typical Applications
Quiescent Supply Current
vs. Input Voltage
12
VOUT = 5V
10
IOUT = 0
8
6
4
2
0
0
20
40
60
80
100
120
INPUT VOLTAGE (V)
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Revision 1.1
February 12, 2014
Micrel, Inc.
MIC5282
Ordering Information
Part Number
Output Voltage
Top Mark
Temperature Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
Lead Finish
MIC5282YMME
MIC5282-3.3YMME
MIC5282-5.0YMME
MIC5282YMM
Adjustable
3.3V
A882
882S
5882
−
8-Pin ePad MSOP
8-Pin ePad MSOP
8-Pin ePad MSOP
8-Pin MSOP
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
5.0V
Adjustable
3.3V
MIC5282-3.3YMM
MIC5282-5.0YMM
8-Pin MSOP
−
5.0V
8-Pin MSOP
−
Pin Configuration
8-Pin ePAD MSOP
MIC5282-x.xYMME
8-Pin MSOP
MIC5282-x.xYMM
(TOP VIEW)
(TOP VIEW)
8-Pin ePAD MSOP
MIC5282YMME
8-Pin MSOP
MIC5282YMM
(TOP VIEW)
(TOP VIEW)
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Micrel, Inc.
MIC5282
Pin Description
Pin
MIC5282-x.xYMME
Name
VIN
Function
MIC5282YMME
MIC5282YMM
MIC5282-x.xYMM
Supply Voltage Input. Connect 1µF
capacitor from VIN to GND.
1
1
1
1
Not internally connected. Connect
NC to GND or leave unconnected.
2, 3, 7
4
2, 3, 7
2, 3, 7
4
2, 3, 7
4
NC
Bypass Capacitor Connection.
CPSRR Connect 0.1µF capacitor from
CPSRR to GND.
4
5
6
5
5
6
5
GND
Ground.
Feedback Connection. For external
resistor divider to set VOUT
FB
−
−
.
Sense input. Connect SNS to
VOUT.
6
8
6
8
−
SNS
VOUT
EP
−
8
−
8
−
Regulator Output. Connect 10µF
capacitor from VOUT to GND.
Exposed Pad (ePad) for Thermal
Relief. Connect EP to GND.
EP
EP
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Micrel, Inc.
MIC5282
Absolute Maximum Ratings(1)
Operating Ratings(2)
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)
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
HBM.........................................................................2kV
MM.........................................................................200V
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)
Quiescent Supply Current(7)
Output Voltage
6
120
V
11
IOUT = 0
6
µA
Adjustable
Fixed 3.3V
1.27
3.2
5.5
3.4
3.3
3.3
5.0
5.0
3.13
4.85
4.75
-3
3.47
5.15
5.25
+3
Output Voltage
V
Fixed 5.0V
%
%
Output Voltage Accuracy
Load Regulation
Variation from nominal VOUT
-5
+5
-1.0
+1.0
ePad
0.5
IOUT = 100µA to 50mA
VIN = 10V to 120V
%
-1.2
-0.5
+1.2
+0.5
non-ePad
0.6
Line Regulation(8)
0.04
%/V
Feedback Input (Adjustable)
1.232 1.270
1.308
FB Voltage
V
1.206
1.333
1.270
3.2
FB Current
VFB = 1.27V
VOUT = 0V
nA
Current Limit
Current Limit
Ripple Rejection
60
260
125
mA
100Hz ≤ f ≤ 1kHz
1kHz ≤ f ≤ 5kHz
5kHz ≤ f ≤ 40kHz
40kHz ≤ f ≤ 1MHz
65
75
80
90
dB
dB
dB
dB
Power Supply Rejection Ratio(9)
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MIC5282
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
IOUT = 50mA
TJ rising
Min.
Typ.
Max.
Units
Power Dropout Voltage
Dropout Voltage
3
2
V
Thermal Protection
Thermal-Shutdown Temperature
Thermal-Shutdown Hysteresis
Notes:
157
15
°C
°C
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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MIC5282
Typical Characteristics
Quiescent Supply Current
Quiescent Supply Current
vs. Temperature
Output Voltage
vs. Input Voltage
vs. Input Voltage
12
12
10
8
5.15
5.10
5.05
5.00
4.95
4.90
4.85
VIN = 12V
VOUT = 5V
IOUT = 0
VOUT = 5V
IOUT = 5mA
10
8
6
4
2
0
6
VIN = 12V
VOUT = 5V
IOUT = 0mA
4
2
0
0
20
40
60
80
100
120
0
20
40
60
80
100
120
-50
-25
0
25
50
75
100
125
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
Output Voltage
vs. Output Current
Output Voltage
vs. Temperature
Dropout Voltage
vs. Output Current
5.15
5.10
5.05
5.00
4.95
4.90
4.85
5.15
5.10
5.05
5.00
4.95
4.90
4.85
3.0
2.5
2.0
1.5
1.0
0.5
0.0
VIN = 12V
OUT = 5V
OUT = 5mA
VIN = 12V
OUT = 5V
V
V
VOUT = 5V
I
0
10
20
30
40
50
-50
-25
0
25
50
75
100
125
0
10
20
30
40
50
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
Feedback Pin Voltage
vs. Input Voltage
Feedback Pin Current
vs. Input Voltage
4
3
2
1
0
1.280
1.275
1.270
1.265
1.260
20
VOUT= 5V
OUT= 50mA
VOUT = 5V
IOUT = 5mA
I
VFB = 1.27V
15
10
5
0
-50
-25
0
25
50
75
100
125
0
20
40
60
80
100
120
0
20
40
60
80
100
120
TEMPERATURE (°C)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
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MIC5282
Typical Characteristics (Continued)
Feedback Pin Voltage
Feedback Pin Voltage
vs. Output Current
Feedback Pin Current
vs. Temperature
vs. Temperature
10
1.30
1.29
1.28
1.27
1.26
1.25
1.32
VIN = 12V
VADJ = 1.27V
VIN = 12V
VOUT = 5V
VIN = 12V
1.31
8
V
OUT = 5V
IOUT = 0
1.30
1.29
1.28
1.27
1.26
1.25
1.24
I
OUT = 5mA
6
4
2
0
-50
-25
0
25
50
75
100
125
0
10
20
30
40
50
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
Load Regulation
vs. Temperature
Line Regulation
vs. Temperature
Current Limit
vs. Temperature
0.0010
0.0005
0.0000
-0.0005
-0.0010
250
200
150
100
50
1.00
0.75
0.50
0.25
0.00
VIN = 10V to 120V
OUT = 5V
VIN = 12V
OUT = 5V
OUT =100uA to 50mA
VIN = 12V
OUT = 0V
V
V
V
IOUT = 100uA
I
0
-50
-25
0
25
50
75
100 125
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
Case Temperature* (MME)
vs. Output Current
PSRR vs. Frequency
Power Dissipation
vs. Output Current
40
20
50
40
30
20
10
0
0.5
0.4
0.3
0.2
0.1
0.0
VIN =12V
OUT = 5.0V
OUT = 50mA
IN = NONE
CPSRR = 0.1µF
OUT =10µF
VIN = 12V
VOUT = 5V
Gain (dB)
VIN = 12V
VOUT = 5V
V
I
0
C
-20
-40
-60
-80
-100
-120
C
0
10
20
30
40
50
0.01
0.1
1
10
100
1000
0
10
20
30
40
50
OUTPUT CURRENT (mA)
FREQUENCY (kHz)
OUTPUT CURRENT (mA)
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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MIC5282
Functional Characteristics
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MIC5282
Functional Characteristics (Continued)
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MIC5282
Detailed Description
Output Voltage Setting
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.
For the MIC5282YMME and MIC5282YMM, VOUT is
programmed from 1.27V to 5.5V using:
R1
R2
VOUT = VREF
×
+1
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.
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.
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.
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.
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MIC5282
Functional Diagram
MIC5282 Adjustable Version
MIC5282 Fixed Version
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MIC5282
MIC5282 Evaluation Board Schematic
MIC5282 Evaluation Board Schematic
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MIC5282
Bill of Materials
Item Part Number
Manufacturer
TDK(1)
Description
Qty.
C1
C2
C3
C5750X7R2E105M
1.0µF, 250V, 20%, X7R capacitor (2220)
0.1µF 25V 20%, X7R capacitor (0805)
10µF, 10V, 20%, X5R, capacitor (0805)
1
1
1
08053C104KAT2A
0805ZD106KAT2A
AVX(2)
AVX
100µF, 160V, 20% capacitor (ALU, 0.492" diameter can 0.197" lead
spacing - Part # ECA-2CM101)
C4
OPEN
Panasonic(3)
0
C5
R1
OPEN
ANY
Capacitor
0
1
1
1
1
1
1
1
CRCW06030000F
CRCW06032942F
CRCW06031002F
CRCW06031822F
CRCW06033012F
CRCW06036982F
MIC5282YMME
Vishay/Dale(4)
Vishay/Dale
Vishay/Dale
Vishay/Dale
Vishay/Dale
Vishay/Dale
Micrel(5)
0Ω, 1% resistor, 0603
R2
29.4kΩ, 1% resistor, 0603
10.0kΩ, 1% resistor, 0603
18.2kΩ, 1%, resistor, 0603
30.1kΩ, 1% resistor chip, 0603
69.8kΩ, 1%, resistor, 0603
120VIN, 50mA, Ultra-Low IQ, High-PSRR Linear Regulator
R3
R4
R5
R6
U1
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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MIC5282
PCB Evaluation Board Layout
Top Layer Silk Screen
Top Layer Traces
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MIC5282
PCB Evaluation Board Layout (Continued)
Bottom Layer Traces
Bottom Layer Silk Screen
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MIC5282
PCB Evaluation Board Layout (Continued)
EV Board Dimensions
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MIC5282
Package Information and Recommended Landing Pattern(1)
8-Pin MSOP
Note:
1. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.
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MIC5282
Package Information and Recommended Landing Pattern(1) (Continued)
8-Pin Exposed Pad (ePad) MSOP
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MIC5282
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
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.
© 2011 Micrel, Incorporated.
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