MIC4576
200 kHz Simple 3A Buck Regulator
Features
General Description
• Fixed 200 kHz Operation
• 3.3V, 5V, and Adjustable Output Versions
• Voltage Over Specified Line and Load Conditions:
- Fixed version: ±3% maximum output voltage
- Adjustable version: ±2% maximum feedback
voltage
• Guaranteed 3A Switch Current
• Wide 4V to 36V Input Voltage Range
• Wide 1.23V to 33V Output Voltage Range
• Requires Minimum External Components
• 75%
Typical)
• Standard Inductors are 25% of Typical LM2576
Inductor Values
• Thermal Shutdown
• Overcurrent Protection
• 100% Electrical Thermal Limit Burn-In
The MIC4576 is a series of easy-to-use fixed and
adjustable BiCMOS step-down (buck) switch-mode
voltage regulators. The 200 kHz MIC4576 duplicates
the pinout and function of the 52 kHz LM2576. The
higher switching frequency may allow up to a 2:1
reduction in output filter inductor size.
• Simple High-Efficiency Step-Down (Buck)
Regulator
• Efficient Preregulator for Linear Regulators
• On-Card Switching Regulators
• Positive-to-Negative Converter (Inverting
Buck-Boost)
• Battery Charger
• Negative Boost Converter
• Step-Down to 3.3V for Intel Pentium™ and Similar
Microprocessors
The feedback voltage is guaranteed to ±2% tolerance
for adjustable versions, and the output voltage is
guaranteed to ±3% for fixed versions, within specified
voltages and load conditions. The oscillator frequency
is guaranteed to ±10%.
In Shutdown mode, the regulator draws less than 200
µA shutdown current. The regulator performs
cycle-by-cycle current limiting and thermal shutdown
for protection under fault conditions.
This series of simple switch-mode regulators requires
a minimum number of external components and can
operate using a standard series of inductors.
Frequency compensation is provided internally.
The MIC4576 is available in TO-220 (T) and TO-263
(U) packages for the industrial temperature range.
Package Types
5
4
3
2
1
TA
AB
Applications
The MIC4576 is available in 3.3V, and 5V fixed output
versions or a 1.23V to 33V adjustable output version.
Both versions are capable of driving a 3A load with
excellent line and load regulation.
SHDN
FB
GND
SW
VIN
TA
AB
5-Pin TO-220 (T)
5
4
3
2
1
SHDN
FB
GND
SW
VIN
5-Pin TO-263 (U)
See Table 2-1 for pin information.
2019 Microchip Technology Inc.
DS20006158A-page 1
MIC4576
Typical Application Circuit
Fixed Regulator
L1
5
Shutdown
Enable
8V to 36V
1
C1
470μF
63V
SHDN
SW
MIC4576-5.0WT
FB
VIN
GND
5V/3A
2
33μH
C2
1000μF
16V
4
D1
MBR360
3
Adjustable Regulator
Shutdown
Enable
16V to 36V
C1
470μF
63V
DS20006158A-page 2
5
SHDN
SW
MIC4576WT
1
FB
VIN
2
L1
68μH
4
GND
3
MBR360
12V/3A
R2
13.0k
1%
R1
1.50k
1%
C2
1000μF
16V
2019 Microchip Technology Inc.
MIC4576
Functional Block Diagram
Block Diagram with External Components
Fixed Step-Down Regulator
+36V max.
VIN
Shutdown
Enable
CIN
Internal
Regulator
SHDN
200 kHz
Oscillator
Comparator
Thermal
Shutdown
Logic
Current
Limit
Driver
L1
SW
VOUT
3A
Switch
D1
COUT
1.23V
Bandgap
Error
Amp.
R1
FB
R2
MIC4576-x.x
GND
Block Diagram with External Components
Adjustable Step-Down Regulator
+36V max.
VIN
Shutdown
Enable
CIN
Internal
Regulator
SHDN
Thermal
Shutdown
200kHz
Oscillator
Comparator
Logic
Current
Limit
Driver
L1
SW
VOUT
3A
Switch
D1
COUT
Error
Amp.
1.23V
Bandgap
R1
FB
MIC4576 [Adjustable]
R2
GND
2019 Microchip Technology Inc.
DS20006158A-page 3
MIC4576
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltage (VIN)..................................................................................................................................................+40V
Shutdown Voltage (VSHDN) ........................................................................................................................ –0.3V to +36V
Output Switch (VSW), Steady State .............................................................................................................................–1V
Feedback Voltage (VFB) [Adjustable] .......................................................................................................................+3.8V
Storage Temperature (TS) ...................................................................................................................... –65°C to +150°C
Junction Temperature (TJ)..................................................................................................................................... +150°C
Operating Ratings ††
Supply Voltage (VIN)..................................................................................................................................................+36V
Junction Temperature (TJ)........................................................................................................................ –40°C to +85°C
Package Thermal Resistance
TO-220, TO-263 (JA) ...........................................................................................................................................65°C/W
TO-220, TO-263 (JC) .............................................................................................................................................2°C/W
† Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions above those
indicated in the operational sections of this specification is not intended. Exposure to maximum rating conditions for
extended periods may affect device reliability.
†† Notice: The device is not guaranteed to function outside its operating ratings.
Note 1: 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.
2: Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5 kΩ in series
with 100pF.
DS20006158A-page 4
2019 Microchip Technology Inc.
MIC4576
ELECTRICAL CHARACTERISTICS
Electrical Characteristics: VIN = 12V; ILOAD = 500 mA; TJ = +25°C, bold values indicate –40°C ≤ TJ ≤ +85°C,
unless noted.
Parameter
Sym.
Min.
Typ.
Max.
Units
Conditions
Feedback Voltage
VFB
1.217
1.230
1.243
V
Feedback Voltage
VFB
1.193
1.230
1.267
V
1.180
—
1.280
V
η
—
77
—
%
ILOAD = 3A, Note 1
Maximum Duty Cycle (On)
DMAX
90
95
—
%
VFB = 1.0V
SW Leakage Current
ISW_LK
—
0
2
mA
VIN = 36V, VFB = 1.5V, VSW = 0V
—
7.5
35
mA
VIN = 36V, VFB = 1.5V, VSW = –1V
—
5
10
mA
VFB = 1.5V
—
50
100
nA
—
—
500
nA
3.234
3.3
3.366
V
3.168
3.3
3.432
V
3.135
—
3.465
V
η
—
72
—
%
ILOAD = 3A
Maximum Duty Cycle (On)
DMAX
90
95
—
%
VFB = 2.5V
SW Leakage Current
ISW_LK
—
0
2
mA
VIN = 36V, VFB = 4V, VSW = 0V
—
7.5
35
mA
VIN = 36V, VFB = 4V, VSW = –1V
IQ
—
5
10
mA
VFB = 4.0V
Output Voltage
VOUT
4.900
5.0
5.100
V
Output Voltage
VOUT
4.800
5.0
5.200
V
4.750
—
5.250
V
η
—
77
—
%
ILOAD = 3A
Maximum Duty Cycle (On)
DMAX
90
95
—
%
VFB = 4.0V
SW Leakage Current
ISW_LK
—
0
2
mA
VIN = 36V, VFB = 6V, VSW = 0V
—
7.5
35
mA
VIN = 36V, VFB = 6V, VSW = –1V
IQ
—
5
10
mA
VFB = 6.0V
Oscillator Frequency
fSW
180
200
220
kHz
Saturation Voltage
VSAT
—
1.7
2.3
V
—
—
2.5
V
Current Limit
ICLIM
4.2
5.2
7.9
A
3.5
—
8.5
A
—
50
200
µA
MIC4576 (Adjustable)
Efficiency
Quiescent Current
IQ
Feedback Bias Current
IFB
8V ≤ VIN ≤ 36V, 0.5A ≤ ILOAD ≤ 3A
MIC4576-3.3
Output Voltage
VOUT
Output Voltage
VOUT
Efficiency
Quiescent Current
6V ≤ VIN ≤ 36V, 0.5A ≤ ILOAD ≤ 3A
MIC4576-5.0
Efficiency
Quiescent Current
8V ≤ VIN ≤ 36V, 0.5A ≤ ILOAD ≤ 3A
MIC4576/-3.3/-5.0
Shutdown Current
Note 1:
ISD
IOUT = 3A
Peak current, tON ≤ 3 µs; VFB = 0V
VSHDN = 5V (regulator off), VFB = 0V
VOUT = 5V.
2019 Microchip Technology Inc.
DS20006158A-page 5
MIC4576
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics: VIN = 12V; ILOAD = 500 mA; TJ = +25°C, bold values indicate –40°C ≤ TJ ≤ +85°C,
unless noted.
Parameter
Sym.
Min.
Typ.
Max.
Units
SHDN Turn-off Threshold
VSDTH_OFF
—
1.4
—
V
Regulator turns off
SHDN Turn-on Threshold
VSDTH_ON
—
1.2
—
V
Regulator turns on
VIH
2.4
—
—
V
VOUT = 0V (regulator off)
VIL
—
—
0.8
V
VOUT = 3.3V or 5V (regulator on)
IIH
—
4
30
µA
VSHDN = 5V (regulator off)
IIL
-10
0.01
10
µA
VSHDN = 0V (regulator on)
SHDN Input Logic Level
SHDN Input Current
Note 1:
Conditions
VOUT = 5V.
TEMPERATURE SPECIFICATIONS
Parameter
Sym.
Min.
Typ.
Max.
Units
Conditions
Operating Junction Temperature
TJ
–40
—
+85
°C
Maximum Junction Temperature
TJ(ABSMAX)
—
—
+150
°C
TS
–65
—
+150
°C
Thermal Resistance, TO-220
θJA
—
65
—
°C/W
Junction to air
Thermal Resistance, TO-220
θJC
—
2
—
°C/W
Junction to case
Thermal Resistance, TO-263
θJA
—
65
—
°C/W
Junction to air
Thermal Resistance, TO-263
θJC
—
2
—
°C/W
Junction to case
Temperature Ranges
Storage Temperature
Package Thermal Resistances
DS20006158A-page 6
2019 Microchip Technology Inc.
MIC4576
2.0
PIN DESCRIPTION
The description of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin Number
Pin Name
1
VIN
Supply Voltage (Input): Unregulated +4V to +36V supply voltage.
2
SW
Switch (Output): Emitter of NPN output switch. Connect to external storage
inductor and Shottky diode.
3, TAB
GND
4
FB
5
SHDN
2019 Microchip Technology Inc.
Description
Ground.
Feedback (Input): Output voltage feedback to regulator. Connect to output of
regular application circuit for fixed versions. Connect to 1.23V tap of resistive
divider for adjustable versions.
Shutdown (Input): Logic low enables regulator. Logic high (> 2.4V) shuts down
regulator.
DS20006158A-page 7
MIC4576
3.0
FUNCTIONAL DESCRIPTION
The MIC4576 is a variable duty cycle switch-mode
regulator with an internal power switch. Refer to the
“Functional Block Diagram”.
3.1
Supply Voltage
The MIC4576 operates from a +4V to +36V
unregulated input. Highest efficiency operation is from
a supply voltage around +15V.
3.2
Enable/Shutdown
The shutdown (SHDN) input is TTL compatible.
Ground the input if unused. A logic low enables the
regulator. A logic high shuts down the regulator which
reduces the device current consumption to typically 50
µA.
3.3
Feedback
Fixed versions of the regulator have an internal
resistive divider from the feedback (FB) pin. Connect
the FB pin directly to the output line.
3.5
Output Switching
When the internal switch is on, an increasing current
flows from the supply VIN, through external storage
inductor L1, to output capacitor COUT and the load.
Energy is stored in the inductor as the current
increases with time.
When the internal switch is turned off, the collapse of
the magnetic field in L1 forces current to flow through
fast recovery diode D1, charging COUT.
3.6
Output Capacitor
External output capacitor COUT provides stabilization
and reduces ripple.
3.7
Return Paths
During the on portion of the cycle, the output capacitor
and load currents return to the supply ground. During
the off portion of the cycle, current is being supplied to
the output capacitor and load by storage inductor L1,
which means that D1 is part of the high-current return
path.
Adjustable versions require an external resistive
voltage divider from the output voltage to ground,
connected from the 1.23V tap to the FB pin.
3.4
Duty Cycle Control
A fixed-gain error amplifier compares the feedback
signal with a 1.23V bandgap voltage reference. The
resulting error amplifier output voltage is compared to a
200 kHz sawtooth waveform to produce a voltage
controlled variable duty cycle output.
A higher feedback voltage increases the error amplifier
output voltage. A higher error amplifier voltage
(comparator inverting input) causes the comparator to
detect only the peaks of the sawtooth, reducing the
duty cycle of the comparator output. A lower feedback
voltage increases the duty cycle.
DS20006158A-page 8
2019 Microchip Technology Inc.
MIC4576
4.0
APPLICATION INFORMATION
The applications circuit that follow have been
constructed and tested. For additional information,
refer to the MIC4576 product webpage from the
Microchip website at www.microchip.com for the
following Application Notes:
• For information on efficiency graphs, addresses
and telephone numbers of the manufacturer for
most circuits, refer to the “Practical Switching
Regulator Circuits” (AN15).
• For a mathematical approach to component
selection and circuit design, refer to the “200kHz
MIC4574/5/6 Family Design Guide” (AN14).
L1
5
6V to 24V
1
C1
470μF
35V
C1
C2
D1
L1
L1
SHDN
SW
MIC4576-3.3WT
FB
VIN
GND
2
4
D1
1N5822
C2
1000μF
16V
FIGURE 4-1:
6V-24V to 3.3V/3A Buck
Converter Through Hole.
L1
6V to 36V
C1
470μF
63V
C1
C2
D1
L1
L1
1
SW
MIC4576-3.3WT
VIN
FB
GND
1
C1
470μF
35V
C1
C2
D1
L1
L1
SW
MIC4576-5.0WT
FB
VIN
GND
2
4
D1
1N5822
3
Nichicon
Nichicon
ON Semi
Coiltronics
BI Magnetics
5V/3A
33μH
C2
1000μF
16V
UPL1V471MPH, ESR = 0.046Ω
UPL1C102MPH, ESR = 0.047Ω
1N5822
PL52C-33-1000, DCR = 0.036Ω
HM77-30004, DCR = 0.045Ω, SMD
FIGURE 4-3:
8V-24V to 5V/3A Buck
Converter Through Hole.
3.3V/3A
Nichicon
UPL1V471MPH, ESR = 0.046Ω
Nichicon
UPL1C102MPH, ESR = 0.047Ω
ON Semi
1N5822
Coiltronics
PL52C-33-1000, DCR = 0.036Ω
BI Magnetics HM77-30004, DCR = 0.045Ω, SMD
SHDN
8V to 24V
SHDN
33μH
3
5
L1
5
2
L1
5
8V to 36V
C1
470μF
63V
C1
C2
D1
L1
L1
1
SHDN
SW
MIC4576-5.0WT
FB
VIN
GND
3
Nichicon
Nichicon
ON Semi
Coiltronics
BI Magnetics
2
5V/3A
33μH
4
D1
MBR360
C2
1000μF
16V
UPL1J471MHH, ESR = 0.039Ω
UPL1C102MPH, ESR = 0.047Ω
MBR360
PLS2C-33-1000, DCR = 0.036Ω
HM77-30004, DCR = 0.045Ω, SMD
FIGURE 4-4:
8V-36V to 5V/3A Buck
Converter Through Hole.
3.3V/3A
33μH
4
3
D1
MBR360
C2
1000μF
16V
Nichicon
UPL1J471MHH, ESR = 0.039Ω
Nichicon
UPL1C102MPH, ESR = 0.047Ω
ON Semi
MBR360
Coiltronics
PL52C-33-1000 DCR = 0.036Ω
BI Magnetics HM77-30004, DCR = 0.045Ω, SMD
FIGURE 4-2:
6V-36V to 3.3V/3A Buck
Converter Through Hole.
2019 Microchip Technology Inc.
DS20006158A-page 9
MIC4576
5
SHDN
1
4
FB
VIN
C1
470μF
63V
GND
MBR360
3
C1
C2
D1
L1
FIGURE 4-5:
68μH
MIC4576WT
16V to 36V
L1
2
SW
Nichicon
Nichicon
ON Semi
BI Magnetics
12V/3A
R2
13.0k
1%
C2
1000μF
16V
R1
1.50k
1%
UPL1J471MHH, ESR = 0.039Ω
UPL1C102MPH, ESR = 0.047Ω
MBR360
HM77-29006, DCR = 0.08Ω, SMD
16V-36V to 12V/3A Buck Converter Through Hole.
U1
5
VIN
8V to 36V
1
SHDN
R1
0.1Ω
L1
SW
MIC4576-5.0WT
FB
VIN
GND
2
VOUT
5V/4A
33μH
C2
1000μF
16V
4
D1
MBR360
3
C1
470μF
63V
R3
10K
C5
0.01μF
VIN
8
2
1
3
4
U2
5
1
C3
470μF
63V
C1, C3
C2, C4
D1, D2
L1, L2
R1, R2
U3
FIGURE 4-6:
DS20006158A-page 10
SHDN
FB
MIC4576-5.0WT
SW
VIN
GND
4
L2
2
33μH
D2
MBR360
3
Nichicon
Nichicon
ON Semi
Coiltronics
KRL
TI
U3
LM358
R2
0.1Ω
C4
1000μF
16V
UPL1J471MHH, ESR = 0.039Ω
UPL1C102MPH, ESR = 0.047Ω
MBR360
PL52C-33-1000, DCR = 0.036Ω
SP-1-A1-0R100J
LM358
Parallel Switching Regulators.
2019 Microchip Technology Inc.
MIC4576
5.0
PACKAGING INFORMATION
5.1
Package Marking Information
5-Lead TO-220
Adjustable Output
XXX
XXXXXX
WNNNP 576
5-Lead TO-220
Fixed Output
XXXX
X.XXX
WNNNP 576
5-Lead TO-263
Adjustable Output
XXX
XXXXXX
WNNNP 576
5-Lead TO-263
FIxed Output
XXXX
X.XXX
WNNNP 576
Legend: XX...X
Y
YY
WW
NNN
e3
*
Example
MIC
4576WT
5963P 576
Example
4576
5.0WT
5963P 576
Example
MIC
4576WU
5963P 576
Example
4576
3.3WU
5963P 576
Product code or customer-specific information
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC® designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator ( e3 )
can be found on the outer packaging for this package.
●, ▲, ▼ Pin one index is identified by a dot, delta up, or delta down (triangle
mark).
Note:
In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information. Package may or may not include
the corporate logo.
Underbar (_) and/or Overbar (‾) symbol may not be to scale.
2019 Microchip Technology Inc.
DS20006158A-page 11
MIC4576
5.2
Package Outline Drawing
5-Lead Transistor Outline Type LB03 (B8X) - [TO-220]
Micrel Legacy Package TO220-LB03-5LD-PL-1
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
E
A
B SEATING
PLANE
E
2
(E1)
(E2)
A1
A
Q
ș1
ØP
(D2)
D
D1
ș1
ș2
L
1
2
3
4 5
c
e
A2
TOP VIEW
5X b
0.15
B A
SIDE VIEW
BOTTOM VIEW
ș2
END VIEW
Microchip Technology Drawing C04-036 Rev D Sheet 1 of 2
DS20006158A-page 12
2019 Microchip Technology Inc.
MIC4576
5-Lead Transistor Outline Type LB03 (B8X) - [TO-220]
Micrel Legacy Package TO220-LB03-5LD-PL-1
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
Dimension Limits
Number of Leads
N
e
Pitch
Overall Height
A
Tab Height
A1
Seating Plane to Lead
A2
b
Lead Width
c
Lead Thickness
Lead Length
L
Total Body Length Including Tab
D
Molded Body Length
D1
Total Width
E
Pad Width
E1
Pad Length
D2
ØP
Hole Diameter
Q
Hole Center to Tab Edge
Molded Body Draft Angle
ș1
ș2
Molded Body Draft Angle
Min
.160
.045
.080
.025
.012
.500
.542
.348
.380
.146
.103
3
1
INCHES
Nom
5
.067 BSC
.175
.050
.098
.033
.016
.540
.580
.354
.400
0.256 REF
0.486 REF
.151
.108
7
4
Max
.190
.055
.115
.040
.020
.580
.619
.360
.420
.156
.113
10
7
Notes:
1. Pin 1 visual index feature may vary, but must be located within the hatched area.
2. Dimensioning and tolerancing per ASME Y14.5M
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
REF: Reference Dimension, usually without tolerance, for information purposes only.
Microchip Technology Drawing C04-036 Rev D Sheet 2 of 2
2019 Microchip Technology Inc.
DS20006158A-page 13
MIC4576
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
DS20006158A-page 14
2019 Microchip Technology Inc.
MIC4576
APPENDIX A:
REVISION HISTORY
Revision A (December 2019)
• Converted Micrel document MIC4576 to
Microchip data sheet DS20006158A.
• Changed the package marking format.
• Made minor text changes throughout the
document.
2019 Microchip Technology Inc.
DS20006158A-page 15
MIC4576
NOTES:
DS20006158A-page 16
2019 Microchip Technology Inc.
MIC4576
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office.
Examples:
Device
X.X
X
X
Output
Voltage
Temperature
Range
Package
–
Part No.
Device:
MIC4576:
Output Voltage:
3.3
= 3.3V Fixed
5.0
= 5.0V Fixed
= Adjustable
Temperature
Range:
W
=
Package:
T
U
= 5-Lead TO-220*
= 5-Lead TO-263 (DDPAK)
Media Type:
= 50/Tube (T, TO-220 & U, DDPAK)
TR
= 750/Reel (U, DDPAK)
Note:
–
XX
a) MIC4576WT:
Media Type
200 kHz 3A Step-Down Regulator
–40°C to +85°C, Industrial, RoHS-Compliant
b) MIC4576-3.3WU:
c) MIC4576-3.3WU-TR:
d) MIC4576-5.0WT:
Tube ship media type is available for TO-220, DDPAK packages
* Contact MCHP Sales for bent or staggered lead options.
e) MIC4576WU-TR:
Note 1:
2019 Microchip Technology Inc.
200 kHz 3A Step-Down
Regulator, Adjustable Output
Voltage, –40°C to +85°C
Temperature Range,
5-Lead TO-220 Package,
50/Tube
200 kHz 3A Step-Down
Regulator, 3.3V Fixed Output
Voltage, –40°C to +85°C
Temperature Range,
5-Lead DDPAK Package,
50/Tube
200 kHz 3A Step-Down
Regulator, 3.3V Fixed Output
Voltage, –40°C to +85°C
Temperature Range,
5-Lead DDPAK Package,
750/Reel
200 kHz 3A Step-Down
Regulator, 5.0V Fixed Output
Voltage, –40°C to +85°C
Temperature Range,
5-Lead TO-220 Package,
50/Tube
200 kHz 3A Step-Down
Regulator, Adjustable Output
Voltage, –40°C to +85°C
Temperature Range,
5-Lead DDPAK Package,
750/Reel
Tape and Reel identifier only appears in the
catalog part number description. This identifier is
used for ordering purposes and is not printed on
the device package. Check with your Microchip
Sales Office for package availability with the
Tape and Reel option.
DS20006158A-page 17
MIC4576
NOTES:
DS20006158A-page 18
2019 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights unless otherwise stated.
Trademarks
The Microchip name and logo, the Microchip logo, Adaptec,
AnyRate, AVR, AVR logo, AVR Freaks, BesTime, BitCloud, chipKIT,
chipKIT logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex,
flexPWR, HELDO, IGLOO, JukeBlox, KeeLoq, Kleer, LANCheck,
LinkMD, maXStylus, maXTouch, MediaLB, megaAVR, Microsemi,
Microsemi logo, MOST, MOST logo, MPLAB, OptoLyzer,
PackeTime, PIC, picoPower, PICSTART, PIC32 logo, PolarFire,
Prochip Designer, QTouch, SAM-BA, SenGenuity, SpyNIC, SST,
SST Logo, SuperFlash, Symmetricom, SyncServer, Tachyon,
TempTrackr, TimeSource, tinyAVR, UNI/O, Vectron, and XMEGA
are registered trademarks of Microchip Technology Incorporated in
the U.S.A. and other countries.
APT, ClockWorks, The Embedded Control Solutions Company,
EtherSynch, FlashTec, Hyper Speed Control, HyperLight Load,
IntelliMOS, Libero, motorBench, mTouch, Powermite 3, Precision
Edge, ProASIC, ProASIC Plus, ProASIC Plus logo, Quiet-Wire,
SmartFusion, SyncWorld, Temux, TimeCesium, TimeHub,
TimePictra, TimeProvider, Vite, WinPath, and ZL are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any
Capacitor, AnyIn, AnyOut, BlueSky, BodyCom, CodeGuard,
CryptoAuthentication, CryptoAutomotive, CryptoCompanion,
CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average
Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial
Programming, ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker,
KleerNet, KleerNet logo, memBrain, Mindi, MiWi, MPASM, MPF,
MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach,
Omniscient Code Generation, PICDEM, PICDEM.net, PICkit,
PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple
Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI,
SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC,
USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and
ZENA are trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in
the U.S.A.
The Adaptec logo, Frequency on Demand, Silicon Storage
Technology, and Symmcom are registered trademarks of Microchip
Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology Germany
II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in
other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2019, Microchip Technology Incorporated, All Rights Reserved.
For information regarding Microchip’s Quality Management Systems,
please visit www.microchip.com/quality.
2019 Microchip Technology Inc.
ISBN: 978-1-5224-5395-6
DS20006158A-page 19
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DS20006158A-page 20
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2019 Microchip Technology Inc.
05/14/19
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