MIC2026/MIC2076
Dual-Channel Power Distribution Switch
Features
• 140 mΩ Maximum On-Resistance per Channel
• 2.7V to 5.5V Operating Range
• 500 mA Minimum Continuous Current per
Channel
• Short-Circuit Protection with Thermal Shutdown
• Thermally Isolated Channels
• Fault Status Flag with 3 ms Filter Eliminates False
Assertions
• Undervoltage Lockout
• Reverse Current Flow Blocking (No “Body Diode”)
• Circuit Breaker Mode (MIC2076)
• Logic-Compatible Inputs
• Soft-Start Circuit
• Low Quiescent Current
• Pin-Compatible with MIC2526
• UL File #E179633
General Description
The MIC2026 and MIC2076 are high-side MOSFET
switches optimized for general-purpose power
distribution that requires circuit protection.
The MIC2026/76 are internally current limited and have
thermal shutdown that protects the device and load.
The MIC2076 offers “smart” thermal shutdown that
reduces current consumption in fault modes. When a
thermal shutdown fault occurs, the output is latched off
until the faulty load is removed. Removing the load or
toggling the enable input will reset the device output.
Both devices employ soft-start circuitry that minimizes
inrush current in applications where highly capacitive
loads are employed.
A fault status output flag is asserted during overcurrent
and thermal shutdown conditions. Transient faults are
internally filtered.
The MIC2026/76 are available in an 8-pin SOIC
package.
Applications
•
•
•
•
•
•
USB Peripherals
General Purpose Power Switching
ACPI Power Distribution
Notebook PCs
PDAs
PC Card Hot Swap
Package Type
MIC2026/MIC2076
8-Lead SOIC (M)
(Top View)
ENA 1
FLGA 2
FLGB 3
ENB 4
8 OUTA
7 IN
6 GND
5 OUTB
2020 Microchip Technology Inc.
DS20006443A-page 1
MIC2026/MIC2076
Typical Application Circuit
V
CC
2.7V to 5.5V
V
CONT.
Logic Controller
VIN
ON/OFF
OVERCURRENT
OVERCURRENT
ON/OFF
MIC2026-2
ENA
FLGA
FLGB
ENB
OUTA
IN
GND
OUTB
Load
0.1μF
Load
Functional Block Diagram
FLGA
FLAG
RESPONSE
DELAY
ENA
CHARGE
PUMP
GATE
CONTROL
CURRENT
LIMIT
OUTA
OSC.
THERMAL
SHUTDOWN
UVLO
1.2V
REFERENCE
IN
CHARGE
PUMP
GATE
CONTROL
ENB
CURRENT
LIMIT
FLAG
RESPONSE
DELAY
OUTB
FLGB
MIC2026/2076
GND
DS20006443A-page 2
2020 Microchip Technology Inc.
MIC2026/MIC2076
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltage (V
IN
) ................................................................................................................................. –0.3V to +6.0V
Fault Flag Voltage (V
FLG
).........................................................................................................................................+6.0V
Fault Flag Current (I
FLG
) .........................................................................................................................................25 mA
Output Voltage (V
OUT
) .............................................................................................................................................+6.0V
Output Current (I
OUT
)............................................................................................................................. Internally Limited
Enable Input Voltage (V
EN
) ................................................................................................................ –0.3V to V
IN
+ 0.3V
ESD Rating (Note
1)
.......................................................................................................................................1 kV (HBM)
200V (MM)
Operating Ratings ††
Supply Voltage (V
IN
) ................................................................................................................................. +2.7V to +5.5V
† 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 are recommended.
ELECTRICAL CHARACTERISTICS
Electrical Characteristics:
V
IN
= +5V; T
A
= +25°C,
bold
values valid for –40°C
≤
T
A
≤
+85°C, unless noted.
Note 1
Parameter
Sym.
Min.
—
—
Supply Current
I
DD
—
—
Enable Input Threshold
Enable Input Hysteresis
Enable Input Current
Enable Input Capacitance
Switch Resistance
Output Leakage Current
OFF Current in Latched
Thermal Shutdown
Note 1:
2:
—
—
50
—
µA
I
EN
R
DS(ON)
—
V
EN
0.8
—
–1
—
—
—
—
100
100
1.7
1.45
250
0.01
1
90
100
—
160
160
2.4
—
—
1
—
140
170
10
V
mV
µA
pF
mΩ
µA
Typ.
0.75
9.5
Max.
5
20
µA
Units
Conditions
MIC20x6-1, V
ENA
= V
ENB
≤
0.8V
(switch off), OUT = open
MIC20x6-2, V
ENA
= V
ENB
≥
2.4V
(switch off), OUT = open
MIC20x6-1, V
ENA
= V
ENB
≥
2.4V
(switch on), OUT = open
MIC20x6-2, V
ENA
= V
ENB
≤
0.8V
(switch on), OUT = open
Low-to-high transition
High-to-low transition
—
V
EN
= 0V to 5.5V
—
V
IN
= 5V, I
OUT
= 500 mA
V
IN
= 3.3V, I
OUT
= 500 mA
MIC20x6-1, V
ENx
≤
0.8V;
MIC20x6-1, V
ENx
≥
2.4V, (output off)
MIC2076
(during thermal shutdown state)
Specification for packaged product only.
If there is a fault on one channel, that channel will shut down when the die reaches approximately 140°C.
If the die reaches approximately 160°C, both channels will shut down, even if neither channel is in current
limit.
2020 Microchip Technology Inc.
DS20006443A-page 3
MIC2026/MIC2076
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics:
V
IN
= +5V; T
A
= +25°C,
bold
values valid for –40°C
≤
T
A
≤
+85°C, unless noted.
Note 1
Parameter
Output Turn-On Delay
Sym.
t
ON
Min.
—
0.5
Output Turn-On Rise Time
t
R
—
Output Turn-Off Delay
Output Turn-Off Fall Time
Short-Circuit Output
Current
Current Limit Threshold
Short-Circuit Response
Time
Overcurrent Flag
Response Delay
Undervoltage Lockout
Threshold
Error Flag Output
Resistance
Error Flag Off Current
t
OFF
t
F
I
LIMIT
—
—
—
—
0.5
0.65
—
1.5
t
D
—
—
—
—
2.2
2.0
—
—
—
—
Overtemperature
Threshold (Note
2)
—
—
—
—
Note 1:
2:
3
2.4
2.15
10
15
—
140
120
160
150
—
2.7
2.5
25
40
10
—
—
—
—
V
Ω
µA
1.75
35
32
0.9
1.0
20
3
—
100
100
1.25
1.25
—
7
ms
µs
µs
A
A
µs
Typ.
1.3
1.15
Max.
5
4.9
ms
Units
ms
Conditions
R
L
= 10Ω, C
L
= 1 µF, see
Timing
Diagrams
R
L
= 10Ω, C
L
= 1 µF, see
Timing
Diagrams
R
L
= 10Ω, C
L
= 1 µF, see
Timing
Diagrams
R
L
= 10Ω, C
L
= 1 µF, see
Timing
Diagrams
R
L
= 10Ω, C
L
= 1 µF, see
Timing
Diagrams
V
OUT
= 0V, enabled into short-circuit
Ramped load applied to output
V
OUT
= 0V to I
OUT
= I
LIMIT
(short applied to output)
V
IN
= 5V, apply V
OUT
= 0V until FLG
low
V
IN
= 3.3V, apply V
OUT
= 0V until FLG
low
V
IN
rising
V
IN
falling
I
L
= 10 mA, V
IN
= 5V
I
L
= 10 mA, V
IN
= 3.3V
V
FLAG
= 5V
T
J
increasing, each switch
T
J
decreasing, each switch
T
J
increasing, both switches
T
J
decreasing, both switches
Specification for packaged product only.
If there is a fault on one channel, that channel will shut down when the die reaches approximately 140°C.
If the die reaches approximately 160°C, both channels will shut down, even if neither channel is in current
limit.
DS20006443A-page 4
2020 Microchip Technology Inc.
MIC2026/MIC2076
TEMPERATURE SPECIFICATIONS
Parameters
Temperature Ranges
Operating Ambient Temperature Range
Storage Temperature Range
Package Thermal Resistance
Thermal Resistance, SOIC 8-Ld
Note 1:
θ
JA
—
160
—
°C/W
—
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., T
A
, T
J
,
JA
). Exceeding the
maximum allowable power dissipation will cause the device operating junction temperature to exceed the
maximum +85°C rating. Sustained junction temperatures above +85°C can impact the device reliability.
T
J
T
S
–40
–65
—
—
+85
+150
°C
°C
Note 1
—
Sym.
Min.
Typ.
Max.
Units
Conditions
Test Circuit
V
OUT
Device
Under OUT
Test
R
L
C
L
FIGURE 1-1:
Test Circuit.
Timing Diagrams
t
R
V
OUT
10%
90%
90%
10%
t
F
FIGURE 1-2:
Output Rise and Fall Times.
50%
t
OFF
t
ON
V
OUT
90%
10%
V
EN
FIGURE 1-3:
Active-Low Switch Delay Times (MIC20x6-2).
V
EN
50%
t
OFF
t
ON
V
OUT
90%
10%
FIGURE 1-4:
Active-High Switch Delay Time (MIC20x6-1).
2020 Microchip Technology Inc.
DS20006443A-page 5
