MIC20XX
Fixed and Adjustable Current Limiting Power Distribution Switches
Features
General Description
MIC20X3 - MIC20X9
The MIC20XX family of switches are current limiting,
high-side power switches, designed for general
purpose power distribution and control in digital
televisions (DTV), printers, set top boxes (STB), PCs,
PDAs, and other peripheral devices (see MIC20XX
Family Package Types and the MIC20XX Family
Member Functionality table).
- 70 mΩ Typical On-Resistance @ 5V
MIC2005A/20X9A
•
•
•
•
•
•
•
•
•
•
•
•
- 170 mΩ Typical On-Resistance @ 5V
Enable Active-High or Active-Low
2.5V to 5.5V Operating Range
Pre-Set Current Limit Values of 0.5A, 0.8A, and
1.2A*
Adjustable Current Limit 0.2A to 2.0A*
(MIC20X7-MIC20X9)
Adjustable Current Limit 0.1A to 0.9A*
(MIC20X9A)
Undervoltage Lockout (UVLO)
Variable UVLO Allows Adjustable UVLO
Thresholds*
Automatic Load Discharge for Capacitive Loads*
Soft-Start Prevents Large Current Inrush
Adjustable Slew Rate Allows Custom Slew Rates*
Automatic-On Output After Fault
Thermal Protection
* Available on some family members
Applications
•
•
•
•
•
•
•
•
Digital Televisions (DTV)
Set Top Boxes
PDAs
Printers
USB / IEEE 1394 Power Distribution
Desktop and Laptop PCs
Game Consoles
Docking Stations
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX family’s primary functions are current limiting
and power switching. They are thermally protected and
will shutdown should their internal temperature reach
unsafe levels, protecting both the device and the load,
under high-current or fault conditions.
Features include fault reporting, fault blanking to
eliminate noise-induced false alarms, output slew rate
limiting, under voltage detection, automatic-on output,
and enable pin with choice of either active low or active
high enable. The FET is self-contained, with a fixed- or
user-adjustable current limit. The MIC20XX family is
ideal for any system where current limiting and power
control are desired.
The MIC201X (3 ≤ X ≤ 9) and MIC2019A switches offer
a unique new patented feature: Kickstart which allows
momentary high-current surges up to the secondary
current limit (ILIMIT_2nd) without sacrificing overall
system safety.
The MIC20XX family is offered, depending on the
desired features, in a space-saving 5-lead SOT-23,
6-lead SOT-23, and 2 mm x 2 mm DFN packages.
DS20006486C-page 1
MIC20XX
MIC20XX Family Package Types
Fixed Current Limit (MIC20X3)
6-Pin DFN (ML)
5-Pin SOT-23 (M5)
VIN 1
Top View
5 VOUT
GND 2
NC 3
4 NC
Fixed Current Limit (MIC20X4)
6-Pin DFN (ML)
5-Pin SOT-23 (M5)
VIN 1
Top View
5 VOUT
GND 2
ENABLE 3
4 NC
Fixed Current Limit (MIC20X5)
5-Pin SOT-23 (M5)
6-Pin SOT-23 (M6)
MIC2005-X.XL
MIC20X5
VIN 1
5 VOUT
GND 2
ENABLE 3
4 FAULT/
VIN 1
6-Pin DFN (ML)
MIC20X5
Top View
6 VOUT
GND 2
5 CSLEW
ENABLE 3
4 FAULT/
Fixed Current Limit (MIC20X6)
6-Pin SOT-23 (M6)
VIN 1
Top View
6 VOUT
GND 2
5 CSLEW
ENABLE 3
4 VUVLO
DS20006486C-page 2
6-Pin DFN (ML)
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
MIC20XX Family Package Types (Continued)
Adjustable Current Limit (MIC20X7/MIC20X8)
6-Pin DFN (ML)
6-Pin SOT-23 (M6)
VIN 1
GND 2
ENABLE 3
Top View
6 VOUT
5 CSLEW
4 ILIMIT
Adjustable Current Limit (MIC20X9)
6-Pin DFN (ML)
6-Pin SOT-23 (M6)
VIN 1
6 VOUT
GND 2
5 ILIMIT
ENABLE 3
Top View
4 FAULT/
Adjustable Current Limit (MIC2005A)
5-Pin SOT-23 (M5)
VIN 1
6-Pin SOT-23 (M6)
VIN 1
5 VOUT
GND 2
5 CSLEW
ENABLE 3
4 FAULT/
GND 2
ENABLE 3
4 FAULT/
6 VOUT
Adjustable Current Limit (MIC2009A)
6-Pin SOT-23 (M6)
VIN 1
6 VOUT
GND 2
5 ILIMIT
ENABLE 3
2021 - 2022 Microchip Technology Inc. and its subsidiaries
4 FAULT/
DS20006486C-page 3
MIC20XX
Typical Application Circuit
5V Supply
MIC2005A
Logic
Controller
VIN
VOUT
120μF
GND
VIN
ON/OFF
OVERCURRENT/
1μF
EN
VBUS
USB
Port
FAULT/
Functional Block Diagram
DS20006486C-page 4
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
VIN, VOUT ..................................................................................................................................................... –0.3V to +6V
All Other Pins ...............................................................................................................................................–0.3 to +5.5V
Power Dissipation (PD) .......................................................................................................................... Internally Limited
Continuous Output Current
All except MIC2005A/MIC20X9A .............................................................................................................................2.25A
MIC2005A/MIC20X9A................................................................................................................................................1.0A
ESD (HBM) Note 1
VOUT and GND......................................................................................................................................................... ±4 kV
All Other Pins ........................................................................................................................................................... ±2 kV
ESD (MM) Note 1
All Pins ....................................................................................................................................................................±200V
Operating Ratings ††
Supply Voltage .......................................................................................................................................... +2.5V to +5.5V
Continuous Output Current
All except MIC2005A/MIC20X9A ......................................................................................................................0A to 2.1A
MIC2005A/MIC20X9A.......................................................................................................................................0A to 0.9A
† 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: Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5 kΩ in series with
100pF.
ELECTRICAL CHARACTERISTICS
Electrical Characteristics: VIN = 5V; CIN = 1 µF; TA = +25°C, unless otherwise noted. Bold indicates specifications
over the full operating temperature range of –40°C to +85°C. (Note 1)
Parameter
Symbol
Min.
Typ.
Max.
Units
VIN
2.5
—
5.5
V
—
ILEAK
—
12
100
µA
Switch = OFF, VOUT = 0V
Active-Low Enable, VEN = 1.5V
Active-High Enable, VEN = 0V
—
80
300
—
8
15
—
1
5
—
170
220
—
—
275
0.5
0.7
0.9
Switch Input Voltage
Output Leakage Current
(Note 2)
Conditions
MIC2005A, MIC2009A, MIC2019A
Supply Current (Note 2)
Power Switch Resistance
IIN
RDS(ON)
Switch = ON
Active-Low Enable, VEN = 0V
Active-High Enable, VEN = 1.5V
µA
Switch = OFF
Active-Low Enable, VEN = 1.5V
Switch = OFF
Active-High Enable, VEN = 0V
mΩ
VIN = 5V, IOUT = 100 mA
MIC2005A
Fixed Current Limit
ILIMIT
2021 - 2022 Microchip Technology Inc. and its subsidiaries
A
VOUT = 0.8 × VIN
DS20006486C-page 5
MIC20XX
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics: VIN = 5V; CIN = 1 µF; TA = +25°C, unless otherwise noted. Bold indicates specifications
over the full operating temperature range of –40°C to +85°C. (Note 1)
Parameter
Symbol
Min.
Typ.
Max.
172
211
263
152
206
263
138
200
263
121
192
263
1
2
3
—
80
330
—
8
15
—
1
5
—
70
100
Units
Conditions
MIC2009A, MIC2019A
Variable Current Limit Factors
CLF
IOUT = 0.9A, VOUT = 0.8 × VIN
V
IOUT = 0.5A, VOUT = 0.8 × VIN
IOUT = 0.2A, VOUT = 0.8 × VIN
IOUT = 0.1A, VOUT = 0.8 × VIN
MIC2019A
Secondary Current Limit
ILIMIT_2nd
A
VIN = 2.5V, VOUT = 0V
MIC2003-MIC2009, MIC2013-MIC2019, MIC2005-X.XL
Supply Current (Note 2)
Power Switch Resistance
IIN
RDS(ON)
125
—
Switch = ON
Active-Low Enable, VEN = 0V
Active-High Enable, VEN = 1.5V
µA
Switch = OFF
Active-Low Enable, VEN = 1.5V
Switch = OFF
Active-High Enable, VEN = 0V
mΩ
VIN = 5V, IOUT = 100 mA
MIC2003-X.X, MIC2004-X.X, MIC2005-X.X, MIC2005-X.XL, MIC2006-X.X, MIC2013-X.X, MIC2014-X.X,
MIC2015-X.X MIC2016-X.X
Fixed Current Limit
ILIMIT
0.5
0.7
0.9
0.8
1.1
1.5
1.2
1.6
2.1
0.5
0.7
0.9
–0.5, VOUT = 0.8 × VIN
A
–0.8, VOUT = 0.8 × VIN
–1.2, VOUT = 0.8 × VIN
MIC2005-0.5
Fixed Current Limit
ILIMIT
A
VOUT = 0.8 × VIN
MIC2007, MIC2008, MIC2009, MIC2017, MIC2018, MIC2019
Variable Current Limit Factors
CLF
210
250
286
190
243
293
168
235
298
144
225
299
IOUT = 2.0A, VOUT = 0.8 × VIN
V
IOUT = 1.0A, VOUT = 0.8 × VIN
IOUT = 0.5A, VOUT = 0.8 × VIN
IOUT = 0.2A, VOUT = 0.8 × VIN
MIC2013, MIC2014, MIC2015, MIC2016, MIC2017, MIC2018, MIC2019
Secondary Current Limit
ILIMIT_2nd
2.2
4
6
A
VIN = 2.5V, VOUT = 0V
VUVLO_TH
225
250
275
mV
RDSCHG
70
126
200
Ω
VIN = 5V, ISINK = 5 mA
—
0.175
—
µA
0V ≤ VOUT ≤ 0.8 VIN
MIC2006, MIC2016
Variable UVLO Threshold
—
MIC20x4, MIC20x7
Load Discharge Resistance
MIC20X5, MIC20X6, MIC20X7, MIC20X8
CSLEW Input Current
DS20006486C-page 6
ICSLEW
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics: VIN = 5V; CIN = 1 µF; TA = +25°C, unless otherwise noted. Bold indicates specifications
over the full operating temperature range of –40°C to +85°C. (Note 1)
Parameter
Symbol
Enable Input Voltage (Note 3)
VEN
Enable Input Current
IEN
Min.
Typ.
Max.
—
—
0.5
1.5
—
—
—
1
5
2
2.25
2.5
1.9
2.15
2.4
Units
Conditions
All Parts
V
µA
VIL (MAX)
VIH (MIN)
0V ≤ VEN ≤ 5V
VIN Rising
Undervoltage Lock-Out
Threshold
UVLO_TH
Undervoltage Lock-Out
Hysteresis
UVLO_HYS
—
0.1
—
V
—
Fault Status Output Voltage
VFAULT
—
0.25
0.4
V
IOL = 10 mA
Overtemperature Threshold
OT_TH
—
145
—
—
135
—
Note 1:
2:
3:
V
°C
VIN Falling
TJ Increasing
TJ Decreasing
Specification for packaged product only.
Check the Ordering Information section to determine which parts are Active-High or Active-Low.
VIL(MAX) = Maximum positive voltage applied to the input which will be accepted by the device as a logic
low. VIH(MAX) = Maximum positive voltage applied to the input which will be accepted by the device as a
logic high.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 7
MIC20XX
AC ELECTRICAL CHARACTERISTICS
Parameters
Symbol
Min.
Typ.
Max.
Units
Output Turn-On Rise Time
tRISE
500
1000
1500
µs
20
32
49
Delay before asserting or
releasing FAULT/
MIC2003 - MIC2009
MIC2009A, MIC2005A
Delay before asserting or
releasing FAULT/
MIC2013 - MIC2019
MIC2019A
Conditions
RL = 10Ω, CLOAD = 1 µF,
VOUT = 10% to 90%
CSLEW = Open (Note 1)
Time from current limiting to FAULT/
state change
ms
tD_FAULT
77
128
192
Time from IOUT continuously exceeding
primary current limit condition to FAULT/
state change
Delay before current
limiting
MIC2013 - MIC2019
MIC2019A
tD_LIMIT
77
128
192
ms
—
Delay before resetting
Kickstart current limit
delay, tD_LIMIT
MIC2013 - MIC2019
MIC2019A
tRESET
77
128
192
ms
Out of current limit following a current
limit event.
Output Turn-On Delay
tON_DLY
—
1000
1500
µs
RL = 43Ω, CL = 120 µF,
VEN = 50% to VOUT = 10%
*CSLEW = Open
Output Turn-Off Delay
tOFF_DLY
—
—
700
µs
RL = 43Ω, CL = 120 µF,
VEN = 50% to VOUT = 90%
*CSLEW = Open
Note 1:
Whenever CSLEW is present.
TEMPERATURE SPECIFICATIONS (Note 1)
Parameters
Symbol
Min.
Typ.
Max.
Units
Conditions
Maximum Junction Temperature
TJ
—
—
+150
°C
—
Storage Temperature
TS
–65
—
+150
°C
—
Ambient Temperature Range
TA
–40
—
+85
°C
—
Lead Temperature
—
—
—
+260
°C
Soldering, 10 sec.
—
°C/W
Temperature Ranges
Package Thermal Resistances (Note 2)
Thermal Resistance, SOT-23-5/6
Thermal Resistance, 6-Lead DFN
Note 1:
2:
230
JA
JA
JC
—
90
—
45
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable
junction temperature and the thermal resistance from junction to air (i.e., TA, TJ, JA). Exceeding the
maximum allowable power dissipation will cause the device operating junction temperature to exceed the
maximum +150°C rating. Sustained junction temperatures above +150°C can impact the device reliability.
Requires proper thermal mounting to achieve this performance.
DS20006486C-page 8
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
Timing Diagrams
tFALL
tRISE
90%
10%
FIGURE 1-1:
90%
10%
Rise and Fall Times.
ENABLE
50%
50%
tOFF_DLY
tON_DLY
90%
VOUT
10%
FIGURE 1-2:
Switching Delay Times.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 9
MIC20XX
2.0
Note:
TYPICAL PERFORMANCE CURVES
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
1.0
80
85°C
60
40
25°C
ILIMIT (A)
SUPPLY CURRENT (μA)
100
-40°C
0.3
0.2
0.1
0
-40
20
0
2.5
3.0
3.5
4.0 4.5
VIN (V)
5.0
5.5
FIGURE 2-1:
Supply Current Output
Enabled (MIC20XX).
FIGURE 2-4:
(MIC20XX-0.5).
1.5
1.4
0.09
0.08
0.07
0.06
ILIMIT (A)
SUPPLY CURRENT (μA)
0.10
0.05
0.04
0.03
85°C
0.02
-40°C 25°C
0.01
0
2.5
3.0
3.5
4.0 4.5
VIN (V)
5.0
ILIMIT (A)
0.08
0.07
0.06
0.05
0.04
0.03
0.02
5V
0.01
-15
10
35
60
TEMPERATURE (°C)
FIGURE 2-3:
(MIC20XX).
DS20006486C-page 10
85
Switch Leakage Current
85
ILIMT vs. Temperature
0.9
0.8
0.7
2.00
1.90
0.09
-15
10
35
60
TEMPERATURE (°C)
5V
FIGURE 2-5:
(MIC20XX-0.8).
0.10
LEAKAGE CURRENT (μA)
1.3
1.2
1.1
1.0
0.6
0.5
-40
5.5
FIGURE 2-2:
Supply Current Output
Disnabled (MIC20XX).
0
-40
0.9
5V
0.8
0.7
0.6
0.5
0.4
1.80
1.70
1.60
1.50
-15
10
35
60
TEMPERATURE (°C)
85
ILIMT vs. Temperature
5V
1.40
1.30
1.20
1.10
1.00
-40
FIGURE 2-6:
(MIC20XX-1.2).
-15
10
35
60
TEMPERATURE (°C)
85
ILIMT vs. Temperature
2021 - 2022 Microchip Technology Inc. and its subsidiaries
160
180
160
140
120 25°C
100
80
140
60
-40°C
40
20
0
2 2.5
RDS(ON) (mOhm)
FIGURE 2-7:
85°C
200
180
160
140
120
100
80
60
40
20
0
-40
3
3.5 4 4.5
VIN (V)
5
IN
= 5.0V
120
85°C
100
25°C
80
60
-40°C
40
0
0
5.5
0.2
FIGURE 2-10:
(MIC20XX-1.2).
160
2.5V
3.3V
5.0V
0.4
0.6 0.8
IOUT (A)
1
1.2
VDROP vs. Temperature
V
IN
140
= 3.3V
120
85°C
100
25°C
80
60
-40°C
40
20
-15
10
35
60
TEMPERATURE (°C)
0
0
85
RDS(ON) vs. Temperature
1200
V
20
RDS(ON) vs. VIN (MIC20XX).
FIGURE 2-8:
(MIC20XX).
CURRENT-LIMIT THRESHOLD (mA)
VIN – VOUT (mV)
200
VIN – VOUT (mV)
RDS(ON) (mOhm)
MIC20XX
FIGURE 2-11:
(MIC20XX-1.2).
0.2
0.4
0.6 0.8
IOUT (A)
1
1.2
VDROP vs. Temperature
1200
RSET = 267Ohms
1000
RSET (Ohms)
1000
800
600
400
FIGURE 2-9:
(MIC20X9-0.9A).
242.62
I
0.9538
LIMIT
800
600
400
200
200
0
-40
RSET =
-15
10
35
60
TEMPERATURE (°C)
0
0
85
ILIMIT vs. Temperature
2021 - 2022 Microchip Technology Inc. and its subsidiaries
FIGURE 2-12:
0.2 0.4 0.6 0.8 1
ILIMIT (A)
1.2 1.4
RSET vs ILIMIT (MIC20X9).
DS20006486C-page 11
MIC20XX
0.9
-40°C
0.8
0.7
80
70
25°C
60
50
85°C
ILIMIT (A)
SUPPLY CURRENT (μA)
100
90
40
30
3
3.5
4
4.5
VIN (V)
5
FIGURE 2-16:
(MIC20X5A).
0.10
ILIMIT (A)
SUPPLY CURRENT (μA)
-40°C
3
3.5
25°C
4
4.5
VIN (V)
85°C
5
5.5
FIGURE 2-14:
Supply Current Output
Disabled (MIC20XXA).
-15
10
35
60
TEMPERATURE (°C)
85
ILIMT vs. Temperature
1000
R
= 267Ohms
900 SET
800
700
600
500
400
300
200
100
0
-40
-15
10
35
60
TEMPERATURE (°C)
85
FIGURE 2-17:
ILIMT vs. Temperature
(MIC20X9A-0.8A).
2500
LEAKAGE CURRENT (μA)
0.10
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
-40
0.4
0.3
0
-40
5.5
FIGURE 2-13:
Supply Current Output
Enabled (MIC20XXA).
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
2.5
0.6
0.5
0.2
0.1
20
10
0
2.5
5V
R
SET
RSET (Ohms)
2000
=
212.23
ILIMIT0.9587
1500
1000
500
5V
-15
10
35
60
TEMPERATURE (°C)
FIGURE 2-15:
(MIC20XXA).
DS20006486C-page 12
85
Switch Leakage Current
0
0
FIGURE 2-18:
0.2
0.4
0.6
ILIMIT (A)
0.8
1
RSET vs ILIMIT (MIC20X9A).
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
160
250
140
25°C
200
VIN - VOUT (mV)
85°C
DS(ON)
150
-40°C
100
50
0
2.5
FIGURE 2-19:
(MIC20XXA).
3
3.5
4
4.5
VIN (V)
5
60
-40°C
40
0.1
5.0V
0.2
0.3 0.4
IOUT (A)
0.5
0.6
VDROP vs. Temperature
V
140
50
IN
= 3.3V
120
85°C
25°C
100
80
60
-40°C
40
20
-15
10
35
60
TEMPERATURE (°C)
0
0
85
RDS(ON) vs. Temperature
FIGURE 2-23:
(MIC20XXA).
0.1
0.2
0.3 0.4
IOUT (A)
0.5
0.6
VDROP vs. Temperature
2.3
40
35
FLAG DELAY (ms)
80
160
3.3V
2.5V
100
5.0V
2.25
3.3V
THRESHOLD (V)
30
25
85°C
25°C
100
FIGURE 2-22:
(MIC20XXA).
RDS(ON) vs. VIN
150
FIGURE 2-20:
(MIC20XXA).
= 5.0V
120
0
0
5.5
200
0
-40
IN
20
VIN - VOUT (mV)
RDS(ON) (mOhms)
250
V
2.5V
20
2.2
2.15
15
10
V RISING
V FALLING
2.1
5
0
-40
FIGURE 2-21:
-15
10
35
60
TEMPERATURE (°C)
85
Flag Delay vs. Temperature.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
2.05
-50
FIGURE 2-24:
Temperature.
0
50
100
TEMPERATURE (°C)
150
UVLO Threshold vs.
DS20006486C-page 13
MIC20XX
FIGURE 2-25:
VIN Soft Turn-On.
FIGURE 2-28:
Turn-Off VIN.
FIGURE 2-26:
Rise Time.
Enable Turn-On Delay and
FIGURE 2-29:
Fall Time.
Enable Turn-Off Delay and
FIGURE 2-27:
Enable Turn-On/Turn-Off.
FIGURE 2-30:
UVLO.
DS20006486C-page 14
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
FIGURE 2-31:
Enabled Into Short.
FIGURE 2-34:
FIGURE 2-32:
Stepped Short.
Current Limit Response,
FIGURE 2-35:
Current Limit Response
Time, Stepped Short.
FIGURE 2-33:
Short Circuit.
Output Recovery From
FIGURE 2-36:
Output Recovery From
Thermal Shutdown.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
Power Up Into Short Circuit.
DS20006486C-page 15
MIC20XX
FIGURE 2-37:
Current-Limit Threshold.
FIGURE 2-40:
Response.
Current Inrush Current
FIGURE 2-38:
Kickstart Response
77 ms/2.2A Load Step.
FIGURE 2-41:
Kickstart Response
150 ms/2.2A Load Step
FIGURE 2-39:
Kickstart Response
Recovery From Thermal Shutdown.
FIGURE 2-42:
5A Over Load.
DS20006486C-page 16
2021 - 2022 Microchip Technology Inc. and its subsidiaries
Kickstart Response Time
MIC20XX
3.0
PIN DESCRIPTIONS
These pin and signal descriptions aid in the differentiation of a pin from electrical signals and components connected to
that pin. For example, VOUT is the switch’s output pin, while VOUT is the electrical signal output voltage present at the
VOUT pin. The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
Pin Name
Type
VIN
Input
Description
Supply input. This pin provides power to both the output switch and the switch’s
internal control circuitry.
GND
—
EN
Input
FAULT/
Output
CSLEW
Input
VOUT
Output
VUVLO
Input
Variable Under Voltage Lockout (VUVLO): Monitors the input voltage through a
resistor divider between VIN and GND. Shuts the switch off if voltage falls below the
threshold set by the resistor divider. Previously called VUVLO.
ILIMIT
Input
Set current limit threshold via a resistor connected from ILIMIT to GND.
EP
Thermal
TABLE 3-2:
Ground
Switch Enable (Input):
Fault status. A logic low on this pin indicates the switch is in current limiting, or has
been shut down by the thermal protection circuit. This is an open-drain output
allowing logical OR’ing of multiple switches.
Slew rate control. Adding a small value capacitor between this pin and VIN slows
turn-on of the power FET.
Switch output. The load being driven by the switch is connected to this pin.
On DFN packages connect EP to GND.
SIGNAL DESCRIPTION TABLE
Signal Name
Type
VIN
Input
GND
—
Description
Electrical signal input voltage present at the VIN pin.
Ground
VEN
Input
Electrical signal input voltage present at the ENABLE pin.
VFAULT/
Output
Electrical signal output voltage present at the FAULT/ pin.
CSLEW
Component
VOUT
Output
Electrical signal output voltage present at the VOUT pin.
VVUVLO_TH
Internal
VUVLO internal reference threshold voltage. This voltage is compared to the
VUVLO pin input voltage to determine if the switch should be disabled. Reference
threshold voltage has a typical value of 250 mV.
CLOAD
Component
IOUT
Output
Electrical signal output current present at the VOUT pin.
ILIMIT
Internal
Switch’s current limit. Fixed at factory or user adjustable.
Capacitance value connected to the CSLEW pin.
Capacitance value connected in parallel with the load. Load capacitance.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 17
MIC20XX
4.0
FUNCTIONAL DESCRIPTION
4.1
VIN and VOUT
VIN is both the power supply connection for the internal
circuitry driving the switch and the input (Source
connection) of the power MOSFET switch. VOUT is the
Drain connection of the power MOSFET and supplies
power to the load. In a typical circuit, current flows from
VIN to VOUT toward the load. Because the switch is
bi-directional when enabled, if VOUT is greater than VIN,
current will flow from VOUT to VIN.
When the switch is disabled, current will not flow to the
load, except for a small unavoidable leakage current of
a few microamps. However, should VOUT exceed VIN
by more than a diode drop (~0.6V), while the switch is
disabled, current will flow from output to input via the
power MOSFET’s body diode.
If discharging CLOAD is required by your application,
consider using MIC20X4 or MIC20X7; these MIC20XX
family members are equipped with a discharge FET to
be ensured complete discharge of CLOAD.
4.2
Current Sensing and Limiting
MIC20XX protects the system power supply and load
from damage by continuously monitoring current
through the on-chip power MOSFET. Load current is
monitored by means of a current mirror in parallel with
the power MOSFET switch. Current limiting is invoked
when the load exceeds the set over current threshold.
When current limiting is activated the output current is
constrained to the limit value, and remains at this level
until either the load/fault is removed, the load’s current
requirement drops below the limiting value, or the
switch goes into thermal shutdown.
4.3
Kickstart
TABLE 4-1:
FIGURE 4-1:
Kickstart Operation.
Figure 4-1 Label Key:
A. MIC201X is enabled into an excessive load (slew
rate limiting not visible at this time scale). The initial
current surge is limited by either the overall circuit
resistance and power supply compliance, or the
secondary current limit, whichever is less.
B. RON of the power FET increases due to internal
heating (effect exaggerated for emphasis).
C. Kickstart period.
D. Current limiting initiated. FAULT/ goes LOW.
E. VOUT is non-zero (load is heavy, but not a dead short
where VOUT = 0V. Limiting response will be the same
for dead shorts).
F. Thermal shutdown followed by thermal cycling.
G. Excessive load released, normal load remains.
MIC201X drops out of current limiting.
H. FAULT/ delay period followed by FAULT/ going
HIGH.
KICKSTART
2003
2004
2005X
2006
2007
2008
2009X
2013
2014
2015
2016
2017
2018
2019X
Note:
to restrict output current to the secondary limit for the
duration of the Kickstart period. After this time the
MIC201X reverts to its normal current limit. An example
of Kickstart operation is shown in Figure 4-1:
Only parts in bold have Kickstart
(Not available in 5-lead SOT-23 packages).
The MIC201X is designed to allow momentary current
surges (Kickstart) before the onset of current limiting,
which permits dynamic loads, such as small disk drives
or portable printers to draw the energy needed to
overcome inertial loads without sacrificing system
safety. In this respect, the Kickstart parts (MIC201X)
differs markedly from the non-Kickstart parts
(MIC200X) which immediately limit load current,
potentially starving the motor and causing the
appliance to stall or stutter.
4.4
Undervoltage Lockout
Undervoltage lockout ensures no anomalous operation
occurs before the device’s minimum input voltage of
UVLOTHRESHOLD, which is 2V minimum, 2.25V typical,
and 2.5V maximum, has been achieved. Prior to
reaching this voltage, the output switch (power
MOSFET) is OFF and no circuit functions, such as
FAULT/ or ENABLE, are considered to be valid or
operative.
During this delay period, typically 128 ms, a secondary
current limit is in effect. If the load demands a current in
excess the secondary limit, MIC201X acts immediately
DS20006486C-page 18
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
4.5
Variable Undervoltage Lockout
TABLE 4-2:
VARIABLE UNDERVOLTAGE
LOCKOUT (VUVLO)
2003
2004
2005X
2006
2007
2008
2009X
2013
2014
2015
2016
2017
2018
2019X
Note:
Only parts in bold have UVLO.
VUVLO functions as an input voltage monitor when the
switch in enabled. The VIN pin is monitored for a drop
in voltage, indicating excessive loading of the VIN
supply. When VIN is less than the VULVO threshold
voltage (VVUVLO_TH) for 32 ms or more, the MIC20XX
disables the switch to protect the supply and allow VIN
to recover. After 128 ms has elapsed, the MIC20X6
enables switch. This disable and enable cycling will
continue as long as VIN deceases below the VUVLO
threshold voltage (VVUVLO_TH) which has a typical
value of 250 mV. The VUVLO voltage is commonly
established by a voltage divider from VIN-to-GND.
4.6
Enable
TABLE 4-3:
ENABLE
2004
2005X
2006
2007
2008
2009X
2013
2014
2015
2016
2017
2018
2019X
Only parts in bold have ENABLE pin.
ENABLE pin is a logic compatible input that activates
the main MOSFET switch thereby providing power to
the VOUT pin. ENABLE is either an active HIGH or
active LOW control signal. The MIC20XX can operate
with logic running from supply voltages as low as 1.5 V.
ENABLE may be driven higher than VIN, but no higher
than 5.5V and not less than –0.3V.
4.7
Fault/
TABLE 4-4:
FAULT/
2003
2004
2005X
2006
2007
2008
2009X
2013
2014
2015
2016
2017
2018
2019X
Note:
Because FAULT/ is an open-drain it must be pulled
HIGH with an external resistor and it may be wire-OR’d
with other similar outputs, sharing a single pull-up
resistor. FAULT/ may be tied to a pull-up voltage source
which is higher than VIN, but no greater than 5.5V.
4.8
Soft-Start Control
Large capacitive loads can create significant inrush
current surges when charged through the switch. For
this reason, the MIC20XX family of switches provides a
built-in soft-start control to limit the initial inrush
currents.
Soft-start is accomplished by controlling the power
MOSFET when the ENABLE pin enables the switch.
4.9
CSLEW
TABLE 4-5:
2003
Note:
current limit threshold after the Kickstart has timed out,
then the FAULT/ will be asserted. After a fault clears,
FAULT/ remains asserted for the delay of 128 ms.
Only parts in bold have FAULT/ pin.
FAULT/ is an N-channel open-drain output that is
asserted (LOW true) when switch either begins current
limiting or enters thermal shutdown.
FAULT/ asserts after a brief delay when events occur
that may be considered possible faults. This delay
insures that FAULT/ is asserted only upon valid,
enduring, over-current conditions and that transitory
event error reports are filtered out.
In MIC200X FAULT/ asserts after a brief delay period,
of 32 ms typical. After a fault clears, FAULT/ remains
asserted for the delay period of 32 ms.
2003
2004
2013
2014
Note:
CSLEW
2005X 2006
2015
2016
2007
2008
2009X
2017
2018
2019X
Only parts in bold have CSLEW pin. (Not
available in 5-pin SOT-23 packages).
The CSLEW pin is provided to increase control of the
output voltage ramp at turn-on. This input allows
designers the option of decreasing the output’s slew
rate (slowing the voltage rise) by adding an external
capacitance between the CSLEW and VIN pins.
4.10
Thermal Shutdown
Thermal shutdown is employed to protect the MIC20XX
family of switches from damage should the die
temperature exceed safe operating levels. Thermal
shutdown shuts off the output MOSFET and asserts the
FAULT/ output if the die temperature reaches 145°C.
The switch will automatically resume operation when
the die temperature cools down to 135°C. If resumed
operation results in reheating of the die, another
shutdown cycle will occur and the switch will continue
cycling between ON and OFF states until the
overcurrent condition has been resolved.
Depending on PCB layout, package type, ambient
temperature, etc., hundreds of milliseconds may
elapse from the incidence of a fault to the output
MOSFET being shut off. This delay is due to thermal
time constants within the system itself. In no event will
the device be damaged due to thermal overload
because die temperature is monitored continuously by
on-chip circuitry.
MIC201X’s FAULT/ asserts at the end of the Kickstart
period which is 128 ms typical. This masks initial
current surges, such as would be seen by a motor load
starting up. If the load current remains above the
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 19
MIC20XX
5.0
APPLICATION INFORMATION
5.1
Setting ILIMIT
EQUATION 5-4:
190V
I LIMIT MIN = ------------- = 0.97A
196
The MIC2009/2019’s current limit is user
programmable and controlled by a resistor connected
between the ILIMIT pin and GND. The value of this
resistor is determined by Equation 5-1:
293V
I LIMIT MAX = ------------- = 1.5A
196
EQUATION 5-1:
I LIMIT
Giving us a maximum ILIMIT variation over temperature
of:
CurrentLimitFactor CLF
= ----------------------------------------------------------------------R SET
• ILIMIT_MIN = 0.97A (−22%)
• ILIMIT_TYP =1.25A
• ILIMIT_MAX = 1.5A (+20%)
or
TABLE 5-2:
EQUATION 5-2:
CurrentLimitFactor CLF
R SET = ----------------------------------------------------------------------I LIMIT A
For example: Set ILIMIT = 1.25A
Please see the Electrical Characteristics table to find
CLF at ILIMIT = 1A.
TABLE 5-1:
CLF AT ILIMIT = 1A
Min
Typ.
Max
Units
MIC20X9A RSET TABLE
IOUT
RSET
0.1A
1928Ω
0.063A
0.136A
0.2A
993Ω
0.137A
0.265A
0.3A
673Ω
0.216A
0.391A
0.4A
511Ω
0.296A
0.515A
0.5A
413Ω
0.379A
0.637A
0.6A
346Ω
0.463A
0.759A
0.7A
299Ω
0.548A
0.880A
0.8A
263Ω
0.634A
1.001A
0.9A
235Ω
0.722A
1.121A
TABLE 5-3:
ILIMIT_MIN
ILIMIT_MAX
MIC20X9 RSET TABLE
190
243
293
V
For the sake of this example, we will say the typical
value of CLF at an IOUT of 1A is 243V. Applying
Equation 5-2:
IOUT
RSET
0.2A
1125Ω
0.127A
0.267A
0.3A
765Ω
0.202A
0.390A
0.4A
582Ω
0.281A
0.510A
EQUATION 5-3:
0.5A
470Ω
0.361A
0.629A
0.6A
395Ω
0.443A
0.746A
0.7A
341Ω
0.526A
0.861A
0.8A
300Ω
0.610A
0.976A
0.9A
268Ω
0.695A
1.089A
243V
R SET = ------------- = 194.4
1.25A
Where:
RSET = 196Ω (the closest standard 1% value)
Designers should be aware that variations in the
measured ILIMIT for a given RSET resistor, will occur
because of small differences between individual ICs
(inherent in silicon processing) resulting in a spread of
ILIMIT values. In the example above we used the typical
value of CLF to calculate RSET. We can determine
ILIMIT’s spread by using the minimum and maximum
values of CLF and the calculated value of RSET.
DS20006486C-page 20
ILIMIT_MIN
ILIMIT_MAX
1A
243Ω
0.781A
1.202A
1.1A
222Ω
0.868A
1.314A
1.2A
204Ω
0.956A
1.426A
1.3A
189Ω
1.044A
1.537A
1.4A
176Ω
1.133A
1.647A
1.5A
165Ω
1.222A
1.757A
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
5.2
ILIMIT vs. IOUT Measured
The MIC20XX’s current-limiting circuitry, during current
limiting, is designed to act as a constant current source
to the load. As the load tries to pull more than the
allotted current, VOUT drops and the input to output
voltage differential increases. When VIN – VOUT
exceeds 1V, IOUT drops below ILIMIT to reduce the drain
of fault current on the system’s power supply and to
limit internal heating of the switch.
In Figure 5-1, output current is measured as VOUT is
pulled below VIN, with the test terminating when VOUT
is 1V below VIN. Observe that once ILIMIT is reached
IOUT remains constant throughout the remainder of the
test. In Figure 5-2 this test is repeated but with
VIN – VOUT exceeding 1V.
When VIN – VOUT > 1V, the switch’s current limiting
circuitry responds by decreasing IOUT, as can be seen
in Figure 5-2. In this demonstration, VOUT is being
controlled and IOUT is the measured quantity. In real life
applications VOUT is determined in accordance with
ohm’s law by the load and the limiting current.
FIGURE 5-2:
VIN - VOUT > 1V.
IOUT in Current Limiting for
This folding back of ILIMIT can be generalized by
plotting ILIMIT as a function of VOUT, as shown below in
Figure 5-3 and Figure 5-4. The slope of VOUT between
IOUT = 0V and IOUT = ILIMIT (where ILIMIT = 1A) is
determined by RON of the switch and ILIMIT.
NORMALIZED OUTPUT CURRENT (A)
When measuring IOUT it is important to bear this
voltage dependence in mind, otherwise the
measurement data may appear to indicate a problem
when none really exists. This voltage dependence is
illustrated in Figure 5-1 and Figure 5-2.
1.2
1.0
0.8
0.6
0.4
0.2
0
0
1
2
3
4
5
OUTPUT VOLTAGE (V)
6
FIGURE 5-1:
VIN - VOUT < 1V.
IOUT in Current Limiting for
NORMALIZED OUTPUT CURRENT (A)
FIGURE 5-3:
Normalized Output Current
vs. Output Voltage (5V).
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0.5 1.0 1.5 2.0 2.5
OUTPUT VOLTAGE (V)
3.0
FIGURE 5-4:
Normalized Output Current
vs. Output Voltage (2.5V).
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 21
MIC20XX
5.3
CSLEW
TABLE 5-4:
CSLEW
2003
2004
2005X
2006
2007
2008
2009X
2013
2014
2015
2016
2017
2018
2019X
Note:
Only parts in bold have CSLEW pin. (Not
available in 5-pin SOT-23 packages).
The CSLEW pin is provided to increase control of the
output voltage ramp at turn-on. This input allows
designers the option of decreasing the output’s slew
rate (slowing the voltage rise) by adding an external
capacitance between the CSLEW and VIN pins. This
capacitance slows the rate at which the pass FET gate
voltage increases and thus, slows both the response to
an enable command as well as VOUT’s ascent to its
final value.
Figure 5-5 illustrates effect of CSLEW on turn-on delay
and output rise time.
14
0.014
TON
12
0.012
TDELAY
TIME (mS)
10
0.01
0.0088
6
0.006
4
0.004
TRISE
2
0.002
0
0
0.5 1 1.5 2 2.5 3 3.5 4 4.5
CSLEW (nF)
FIGURE 5-5:
and Rise Times.
5.3.1
CSLEW vs. Turn-On, Delay
CSLEW’S EFFECT ON ILIMIT
An unavoidable consequence of adding CSLEW
capacitance is a reduction in the MIC20X5 - 20X8’s
ability to quickly limit current transients or surges. A
sufficiently large capacitance can prevent both the
primary and secondary current limits from acting in time
to prevent damage to the MIC20X5 - 20X8 or the
system from a short circuit fault. For this reason, the
upper limit on the value of CSLEW is 4 nF.
5.4
To better understand how the MIC20X6 provides this,
imagine a system whose main power supply supports
heavy loads during normal operation, but in sleep
mode is reduced to only few hundred milliamps of
output current. In addition, this system has several
USB ports which must remain active during sleep.
During normal operation, each port can support a
500 mA peripheral, but in sleep mode their combined
output current is limited to what the power supply can
deliver minus whatever the system itself is drawing.
If a peripheral device is plugged in which demands
more current than is available, the system power
supply will sag, or crash. The MIC20X6 prevents this by
monitoring both the load current and VIN. During
normal operation, when the power supply can source
plenty of current, the MIC20X6 will support any load up
to its factory programmed current limit. When the
weaker, standby supply is in operation, the MIC20X6
monitors VIN and will shut off its output should VIN dip
below a predetermined value. This predetermined
voltage is user programmable and set by the selection
of the resistor divider driving the VUVLO pin.
To prevent false triggering of the VUVLO feature, the
MIC20X6 includes a delay timer to blank out
momentary excursions below the VUVLO trip point. If
VIN stays below the VUVLO trip point for longer than
32 ms (typical), then the load is disengaged and the
MIC20X6 will wait 128 ms before reapplying power to
the load. If VIN remains below the VUVLO trip point,
then the load will be powered for the 32 ms blanking
period and then again disengaged. This is illustrated in
the scope plot below. If VIN remains above the VUVLO
trip point MIC20X6 resumes normal operation.
Variable Undervoltage Lockout
(VUVLO)
TABLE 5-5:
VARIABLE UNDERVOLTAGE
LOCKOUT (VUVLO)
2003
2004
2005X
2006
2007
2008
2009X
2013
2014
2015
2016
2017
2018
2019X
Note:
Power-conscious
systems,
such
as
those
implementing ACPI, will remain active even in their
low-power states and may require the support of
external devices through both phases of operation.
Under these conditions, the current allowed these
external devices may vary according to the system’s
operating state and as such require dual current limits
on their peripheral ports. The MIC20X6 is designed for
systems demanding two primary current limiting levels
but without the use of a control signal to select between
current limits.
Only parts in bold have VUVLO pin and
functionality.
FIGURE 5-6:
DS20006486C-page 22
VUVLO Operation.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
VUVLO and Kickstart operate independently in the
MIC2016. If the high current surge allowed by Kickstart
causes VIN to dip below the VUVLO trip point for more
than 32 ms, VUVLO will disengage the load, even
though the Kickstart timer has not timed out.
EQUATION 5-7:
0.25V
R2 = ---------------= 2.5k
100A
IIN_LOAD
Now the value of R1 can be calculated by:
Input
Supply
VIN
R1
+
R2
FIGURE 5-7:
5.4.1
VOUT
MIC20X6
+
EQUATION 5-8:
VUVLO
VUVLO Application Circuit.
CALCULATING VUVLO RESISTOR
DIVIDER VALUES
The VUVLO feature is designed to keep the internal
switch off until the voltage on the VUVLO pin is greater
than 0.25V. A resistor divider network connected to the
VUVLO and VIN pins is used to set the input trip
voltage VTRIP (see Figure 5-7). The value of R2 is
chosen to minimize the load on the input supply IDIV
and the value of R1 sets the trip voltage VTRIP.
The value of R2 is calculated using:
EQUATION 5-5:
V VUVLO
R2 = ------------------I DIV
The value of R1 is calculated using:
EQUATION 5-6:
V TRIP
R1 = R2 ------------------- – 1
V
VUVLO
Where for Equation 5-5 and Equation 5-6: VVUVLO =
0.25V
When working with large value resistors, a small
amount of leakage current from the VUVLO terminal
can cause voltage offsets that degrade system
accuracy. Therefore, the maximum recommended
resistor value for R2 is 100 kΩ.
R1 = 2.5k 4.75V
-------------- – 1 = 45k
0.25V
Where:
VTRIP =
4.75V (for a 5V supply)
VVUVLO =
0.25V
The VUVLO comparator uses no hysteresis. This is
because the VUVLO blanking timer prevents any
chattering that might otherwise occur if VIN varies about
the trigger point. The timer is reset by upward crossings
of the trip point such that VIN must remain below the trip
point for the full 32 ms period for load disengagement
to occur.
In selecting a VTRIP voltage, the designer is cautioned
to not make this value less than 2.5V. A minimum of
2.5V is required for the MIC20X6’s internal circuitry to
operate properly. VUVLO trip points below 2.5V will
result in erratic or unpredictable operation.
5.5
Kickstart
TABLE 5-6:
KICKSTART
2003
2004
2005X
2006
2007
2008
2009X
2013
2014
2015
2016
2017
2018
2019X
Note:
Only parts in bold have Kickstart
(Not available in 5-pin SOT-23 packages).
Kickstart allows brief current surges to pass to the load
before the onset of normal current limiting, which
permits dynamic loads to draw bursts of energy without
sacrificing system safety.
Functionally, Kickstart is a forced override of the normal
current limiting function provided by the switch. The
Kickstart period is governed by an internal timer which
allows current to pass up to the secondary current limit
(ILIMIT_2nd) to the load for 128 ms and then normal
(primary) current limiting goes into action.
Using the divider loading current IDIV of 100 µA, the
value of R2 can be estimated by:
During Kickstart, a secondary current-limiting circuit is
monitoring output current to prevent damage to the
switch, as a hard short combined with a robust power
supply can result in currents of many tens of amperes.
This secondary current limit is nominally set at 4A and
reacts immediately and independently of the Kickstart
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 23
MIC20XX
period. Once the Kickstart timer has finished its count
the primary current limiting circuit takes over and holds
IOUT to its programmed limit for as long as the
excessive load persists.
Once the switch drops out of current limiting the
Kickstart timer initiates a lock-out period of 128 ms
such that no further bursts of current above the primary
current limit, will be allowed until the lock-out period
has expired.
Kickstart may be over-ridden by the thermal protection
circuit and if sufficient internal heating occurs, Kickstart
will be terminated and IOUT → 0A. Upon cooling, if the
load is still present IOUT → ILIMIT, not ILIMIT_2nd.
5.7
Supply Filtering
A minimum 1 μF bypass capacitor positioned close to
the VIN and GND pins of the switch is both good design
practice and required for proper operation of the switch.
This will control supply transients and ringing. Without
a bypass capacitor, large current surges or a short may
cause sufficient ringing on VIN (from supply lead
inductance) to cause erratic operation of the switch’s
control circuitry. For best-performance good quality,
low-ESR capacitors are recommended, preferably
ceramic.
When bypassing with capacitors of 10 μF and up, it is
good practice to place a smaller value capacitor in
parallel with the larger to handle the high frequency
components of any line transients. Values in the range
of 0.01 μF to 0.1 μF are recommended. Again, good
quality, low-ESR capacitors should be chosen.
5.8
Power Dissipation
Power dissipation depends on several factors such as
the load, PCB layout, ambient temperature, and supply
voltage. Calculation of power dissipation can be
accomplished by the following equation:
EQUATION 5-9:
FIGURE 5-8:
5.6
Kickstart.
P D = R DS ON I OUT
Automatic Load Discharge
TABLE 5-7:
AUTOMATIC LOAD
DISCHARGE
2003
2004
2005X
2006
2007
2008
2009X
2013
2014
2015
2016
2017
2018
2019X
Note:
Only parts in bold have automatic load discharge.
Automatic discharge is a valuable feature when it is
desirable to quickly remove charge from the VOUT pin.
This allows for a quicker power-down of the load. This
also prevents any charge from being presented to a
device being connected to the VOUT pin, for example,
USB, 1394, PCMCIA, and CableCARD.
Automatic discharge is performed by a shunt MOSFET
from VOUT pin to GND. When the switch is disabled, a
break before make action is performed turning off the
main power MOSFET and then enabling the shunt
MOSFET. The total resistance of the MOSFET and
internal resistances is typically 126Ω.
DS20006486C-page 24
2
To relate this to junction temperature, the following
equation can be used:
EQUATION 5-10:
T J = P D R J-A + T A
Where:
TJ =
Junction temperature
TA =
Ambient temperature
Rθ(J-A) =
The thermal resistance of the package
In normal operation the switch’s RON is low enough that
no significant I2R heating occurs. Device heating is
most often caused by a short circuit, or very heavy load,
when a significant portion of the input supply voltage
appears across the switch’s power MOSFET. Under
these conditions the heat generated will exceed the
package and PCB’s ability to cool the device and
thermal limiting will be invoked.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
In Figure 5-9, die temperature is plotted against IOUT
assuming a constant case temperature of 85°C. The
plots also assume a worst case RON of 140 mΩ at a die
temperature of 135°C. Under these conditions it is clear
that an SOT-23 packaged device will be on the verge of
thermal shutdown, typically 140°C die temperature,
when operating at a load current of 1.25A. For this
reason we recommend using DFN packaged switches
for any design intending to supply continuous currents
of 1A or more.
160
140
120
100
SOT-23
DFN
80
60
40
20
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT CURRENT (A)
FIGURE 5-9:
(TCASE = 85°C).
Die Temperature vs. IOUT
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 25
MIC20XX
6.0
PACKAGING INFORMATION
6.1
Package Marking Information
5-Lead SOT-23*
(Front)
Example
XXXX
FD08
6-Lead SOT-23*
(Front)
Example
XXXX
FA54
6-Lead DFN*
__
XXX
NNN
Legend: XX...X
Y
YY
WW
NNN
e3
*
5-Lead SOT-23*
(Back)
NNN
5-Lead SOT-23*
(Back)
NNN
Example
6SC
Example
WS7
Example
__
QAA
6D8
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.
Note:
If the full seven-character YYWWNNN code cannot fit on the package, the following truncated codes are
used based on the available marking space:
6 Characters = YWWNNN; 5 Characters = WWNNN; 4 Characters = WNNN; 3 Characters = NNN;
2 Characters = NN; 1 Character = N
DS20006486C-page 26
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
5-Lead SOT-23 (M5) Package Outline & Recommended Land Pattern
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 27
MIC20XX
6-Lead SOT-23 (M6) Package Outline & Recommended Land Pattern
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
DS20006486C-page 28
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
6-Lead DFN 2 mm x 2 mm Package Outline & Recommended Land Pattern
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 29
MIC20XX
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
DS20006486C-page 30
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
APPENDIX A:
REVISION HISTORY
Revision A (January 2021)
• Converted Micrel document MIC20XX to Microchip data sheet template DS20006486A.
• Minor grammatical text changes throughout.
Revision B (February 2021)
• Figure 2-23 (VIN = 3.3V) was a repeat of Figure 222 (VIN = 5.0) by mistake and is the corrected
graph now.
Revision C (February 2022)
• Updated Pin Diagram for MIC20X5 (6-Pin DFN
version) in the MIC20XX Family Package Types
section.
• Updated the Package Marking Information drawing to reflect the most current information.
• Minor grammatical and stylistic corrections
throughout.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 31
MIC20XX
NOTES:
DS20006486C-page 32
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office.
MIC2003/MIC2013
Full Part No. (Note 1)
Marking
(Note 2)
Current
Limit
MIC2003-0.5YM5-TR
FD05
0.5A
MIC2003-0.8YM5-TR
FD08
0.8A
MIC2003-1.2YM5-TR
FD12
1.2A
MIC2003-0.5YML-TR
D05
0.5A
MIC2003-0.8YML-TR
D08
0.8A
MIC2003-1.2YML-TR
D12
1.2A
MIC2013-0.5YM5-TR
FL05
0.5A
MIC2013-0.8YM5-TR
FL08
0.8A
MIC2013-1.2YM5-TR
FL12
1.2A
MIC2013-0.5YML-TR
L05
0.5A
MIC2013-0.8YML-TR
L08
0.8A
MIC2013-1.2YML-TR
L12
1.2A
Kickstart
Package
Media Type
5-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
5-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
5-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
5-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
6-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
6-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
No
Yes
MIC2004/MIC2014
MIC2004-0.5YM5-TR
FE05
0.5A
MIC2004-0.8YM5-TR
FE08
0.8A
MIC2004-1.2YM5-TR
FE12
1.2A
MIC2004-0.5YML-TR
E05
0.5A
MIC2004-0.8YML-TR
E08
0.8A
MIC2004-1.2YML-TR
E12
1.2A
MIC2014-0.5YM5-TR
FM05
0.5A
MIC2014-0.8YM5-TR
FM08
0.8A
MIC2014-1.2YM5-TR
FM12
1.2A
MIC2014-0.5YML-TR
M05
0.5A
MIC2014-0.8YML-TR
M08
0.8A
MIC2014-1.2YML-TR
M12
1.2A
No
Yes
MIC2005/MIC2015
MIC2005-0.5YM6-TR
FF05
0.5A
MIC2005-0.8YM6-TR
FF08
0.8A
MIC2005-1.2YM6-TR
FF12
1.2A
MIC2005-0.5YML-TR
F05
0.5A
MIC2005-0.8YML-TR
F08
0.8A
MIC2005-1.2YML-TR
F12
1.2A
MIC2015-0.5YM6-TR
FN05
0.5A
MIC2015-0.8YM6-TR
FN08
0.8A
MIC2015-1.2YM6-TR
FN12
1.2A
MIC2015-0.5YML-TR
N05
0.5A
MIC2015-0.8YML-TR
N08
0.8A
MIC2015-1.2YML-TR
N12
1.2A
2021 - 2022 Microchip Technology Inc. and its subsidiaries
No
Yes
DS20006486C-page 33
MIC20XX
PRODUCT IDENTIFICATION SYSTEM (CONTINUED)
To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office.
Marking
Current
Limit
MIC2005A-1YM5-TR
FA51
0.5A
MIC2005A-2YM5-TR
FA52
0.5A
MIC2005A-1YM6-TR
FA53
0.5A
MIC2005A-2YM6-TR
FA54
0.5A
MIC2005-0.5LYM5
5LFF
0.5A
MIC2005-0.8LYM5
8LFF
0.8A
MIC2005-1.2LYM5
4LFF
1.2A
Full Part No.
Kickstart
Package
Media Type
MIC2005A
5-Lead SOT-23
No
3,000/Reel
6-Lead SOT-23
MIC2005L
No
5-Lead SOT-23
3,000/Reel
6-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
6-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
6-Lead SOT-23
3,000/Reel
MIC2006/MIC2016
MIC2006-0.5YM6-TR
FG05
0.5A
MIC2006-0.8YM6-TR
FG08
0.8A
MIC2006-1.2YM6-TR
FG12
1.2A
MIC2006-0.5YML-TR
G05
0.5A
MIC2006-0.8YML-TR
G08
0.8A
MIC2006-1.2YML-TR
G12
1.2A
MIC2016-0.5YM6-TR
FP05
0.5A
MIC2016-0.8YM6-TR
FP08
0.8A
MIC2016-1.2YM6-TR
FP12
1.2A
MIC2016-0.5YML-TR
P05
0.5A
MIC2016-0.8YML-TR
P08
0.8A
MIC2016-1.2YML-TR
P12
1.2A
No
Yes
MIC2007/MIC2017
MIC2007YM6-TR
FHAA
MIC2007YML-TR
HAA
MIC2017YM6-TR
FQAA
MIC2017YML-TR
QAA
No
0.2A - 2.0A
Yes
6-Lead 2 mm x 2 mm DFN
5,000/Reel
6-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
MIC2008/MIC2018
MIC2008YM6-TR
FJAA
MIC2008YML-TR
JAA
MIC2018YM6-TR
FRAA
MIC2018YML-TR
RAA
No
0.2A - 2.0A
Yes
6-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
6-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
6-Lead SOT-23
3,000/Reel
MIC2009/MIC2019
MIC2009YM6-TR
FKAA
MIC2009YML-TR
KAA
MIC2019YM6-TR
FSAA
MIC2019YML-TR
SAA
DS20006486C-page 34
No
0.2A - 2.0A
Yes
6-Lead 2 mm x 2 mm DFN
5,000/Reel
6-Lead SOT-23
3,000/Reel
6-Lead 2 mm x 2 mm DFN
5,000/Reel
2021 - 2022 Microchip Technology Inc. and its subsidiaries
MIC20XX
PRODUCT IDENTIFICATION SYSTEM (CONTINUED)
To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office.
Full Part No.
Current
Limit
Marking
Kickstart
Package
Media Type
MIC2009A/MIC2019A
MIC2009A-1YM6-TR
FK1
MIC2009A-2YM6-TR
FK2
MIC2019A-1YM6-TR
FS1
MIC2019A-2YM6-TR
FS2
Note 1:
2:
3,000/Reel
No
0.1A - 0.9A
3,000/Reel
6-Lead SOT-23
3,000/Reel
Yes
3,000/Reel
All MIC20XX Family parts are RoHS-compliant lead .
Over/Underbar symbol ( ¯ / _ ) may not be to scale. On the package the over/under symbol begins
above/below the first character of the marking.
MIC20XX FAMILY MEMBER FUNCTIONALITY
Part Number
Normal Kickstart
Limiting
Note 1
Pin Function
ILIMIT
ILIMIT
ENABLE ENABLE
High
Low
CSLEW
FAULT/
VUVLO
Note 4
Load
Discharge
2003
2013
—
—
—
—
—
—
—
2004
20014
—
▲
—
—
—
—
▲
—
▲
—
▲
▲
—
—
—
—
▲
—
▲
—
—
2005
2015
2005L
—
2005A-1
—
—
▲
—
Note 5
▲
—
—
2005A-2
—
—
—
▲
Note 5
▲
—
—
2006
2016
—
▲
—
▲
—
▲
—
2007
2017
▲
▲
—
▲
—
—
▲
2008
2018
▲
▲
—
▲
—
—
—
2009
2019
▲
▲
—
—
▲
—
—
2009A-1
2019A-1
▲
▲
—
—
▲
—
—
2009A-2
2019A-2
▲
—
▲
—
▲
—
—
Note 1:
2:
3:
4:
5:
Fixed
Note 2
Adj.
Note 3
Kickstart provides an alternate start-up behavior; however, pinouts are identical.
Fixed = Factory programmed current limit.
Adjustable = User adjustable current limit.
VUVLO = Variable UVLO (previously called DML).
CSLEW, while available in 6-pin package, not available in 5-pin package.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
DS20006486C-page 35
MIC20XX
NOTES:
DS20006486C-page 36
2021 - 2022 Microchip Technology Inc. and its subsidiaries
Note the following details of the code protection feature on Microchip products:
•
Microchip products meet the specifications contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is secure when used in the intended manner, within operating specifications, and
under normal conditions.
•
Microchip values and aggressively protects its intellectual property rights. Attempts to breach the code protection features of
Microchip product is strictly prohibited and may violate the Digital Millennium Copyright Act.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of its code. Code protection does not
mean that we are guaranteeing the product is “unbreakable”. Code protection is constantly evolving. Microchip is committed to
continuously improving the code protection features of our products.
This publication and the information herein may be used only
with Microchip products, including to design, test, and integrate
Microchip products with your application. Use of this information in any other manner violates these terms. Information
regarding device applications 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. Contact your local Microchip sales office for
additional support or, obtain additional support at https://
www.microchip.com/en-us/support/design-help/client-supportservices.
THIS INFORMATION IS PROVIDED BY MICROCHIP "AS IS".
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 ANY IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A
PARTICULAR PURPOSE, OR WARRANTIES RELATED TO
ITS CONDITION, QUALITY, OR PERFORMANCE.
IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL, OR CONSEQUENTIAL LOSS, DAMAGE, COST, OR EXPENSE OF ANY
KIND WHATSOEVER RELATED TO THE INFORMATION OR
ITS USE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS
BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES
ARE FORESEEABLE. TO THE FULLEST EXTENT
ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON
ALL CLAIMS IN ANY WAY RELATED TO THE INFORMATION
OR ITS USE WILL NOT EXCEED THE AMOUNT OF FEES, IF
ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP
FOR THE INFORMATION.
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,
CryptoMemory, CryptoRF, dsPIC, flexPWR, HELDO, IGLOO,
JukeBlox, KeeLoq, Kleer, LANCheck, LinkMD, maXStylus,
maXTouch, MediaLB, megaAVR, Microsemi, Microsemi logo,
MOST, MOST logo, MPLAB, OptoLyzer, PIC, picoPower,
PICSTART, PIC32 logo, PolarFire, Prochip Designer, QTouch,
SAM-BA, SenGenuity, SpyNIC, SST, SST Logo, SuperFlash,
Symmetricom, SyncServer, Tachyon, TimeSource, tinyAVR, UNI/O,
Vectron, and XMEGA are registered trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.
AgileSwitch, 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, QuietWire, SmartFusion, SyncWorld, Temux, TimeCesium, TimeHub,
TimePictra, TimeProvider, TrueTime, 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, Augmented Switching, BlueSky,
BodyCom, CodeGuard, CryptoAuthentication, CryptoAutomotive,
CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net,
Dynamic Average Matching, DAM, ECAN, Espresso T1S,
EtherGREEN, GridTime, IdealBridge, In-Circuit Serial
Programming, ICSP, INICnet, Intelligent Paralleling, Inter-Chip
Connectivity, JitterBlocker, Knob-on-Display, maxCrypto, maxView,
memBrain, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo,
MPLIB, MPLINK, MultiTRAK, NetDetach, NVM Express, NVMe,
Omniscient Code Generation, PICDEM, PICDEM.net, PICkit,
PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple
Blocker, RTAX, RTG4, SAM-ICE, Serial Quad I/O, simpleMAP,
SimpliPHY, SmartBuffer, SmartHLS, SMART-I.S., storClad, SQI,
SuperSwitcher, SuperSwitcher II, Switchtec, SynchroPHY, Total
Endurance, TSHARC, USBCheck, VariSense, VectorBlox, VeriPHY,
ViewSpan, WiperLock, XpressConnect, 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, Symmcom, and Trusted Time 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.
© 2021 - 2022, Microchip Technology Incorporated and its subsidiaries.
All Rights Reserved.
For information regarding Microchip’s Quality Management Systems,
please visit www.microchip.com/quality.
2021 - 2022 Microchip Technology Inc. and its subsidiaries
ISBN: 978-1-5224-9820-9
DS20006486C-page 37
Worldwide Sales and Service
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://www.microchip.com/
support
Web Address:
www.microchip.com
Australia - Sydney
Tel: 61-2-9868-6733
India - Bangalore
Tel: 91-80-3090-4444
China - Beijing
Tel: 86-10-8569-7000
India - New Delhi
Tel: 91-11-4160-8631
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Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
China - Chengdu
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San Jose, CA
Tel: 408-735-9110
Tel: 408-436-4270
Canada - Toronto
Tel: 905-695-1980
Fax: 905-695-2078
DS20006486C-page 38
China - Xiamen
Tel: 86-592-2388138
China - Zhuhai
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Tel: 48-22-3325737
Romania - Bucharest
Tel: 40-21-407-87-50
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
Sweden - Gothenberg
Tel: 46-31-704-60-40
Sweden - Stockholm
Tel: 46-8-5090-4654
UK - Wokingham
Tel: 44-118-921-5800
Fax: 44-118-921-5820
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09/14/21
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