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Distribution Switch. MIC2026 Datasheet |
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MIC2026/2076
Dual-Channel Power Distribution Switch
General Description
Features
The MIC2026 and MIC2076 are high-side MOSFET
switches optimized for general-purpose power distribution
requiring 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
• 140mΩ maximum on-resistance per channel
• 2.7V to 5.5V operating range
• 500mA minimum continuous current per channel
• Shortcircuit protection with thermal shutdown
• Thermally isolated channels
• Fault status flag with 3ms filter eliminates false
assertions
• Undervoltage lockout
toggling the enable input will reset the device output.
• Reverse current flow blocking (no “body diode”)
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.
• Circuit breaker mode (MIC2076)
• Logic-compatible inputs
• Soft-start circuit
• Low quiescent current
• Pin compatible with MIC2526
The MIC2026/76 are available in 8-pin DIP or 8-pin SOIC. • UL File # E179633
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Applications
• USB peripherals
• General purpose power switching
• ACPI power distribution
• Notebook PCs
• PDAs
• PC card hot swap
___________________________________________________________________________________________________________
Typical Application
VCONT.
10k
10k
Logic Controller
VIN ON/OFF
OVERCURRENT
OVERCURRENT
ON/OFF
VCC
2.7V to 5.5V
MIC2026-2
ENA
FLGAI
FLGB
ENB
OUTA
N
GND
OUTB
Load
0.1µF
Load
UL Recognized Component
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
June 2010
M9999-060410-B
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Micrel, Inc.
Ordering Information
Part Number
Standard
MIC2026-1BM
MIC2026-2BM
MIC2026-1BN
MIC2026-2BN
MIC2076-1BM
MIC2076-2BM
MIC2076-1BN
MIC2076-2BN
Pb-Free
MIC2026-1YM(1)
MIC2026-2YM(1)
—
—
MIC2076-1YM(1)
MIC2076-2YM(1)
—
—
Note:
1. RoHS compliant and Halogen free.
Enable
Active High
Active Low
Active High
Active Low
Active High
Active Low
Active High
Active Low
Temperature
Range
–40°C to +85°C
Package
8-Pin SOIC
8- Pin SOIC
8- Pin DIP
8- Pin DIP
8- Pin SOIC
8- Pin SOIC
8-Pin DIP
8-Pin DIP
MIC2026/2076
Pin Configuration
ENA 1
FLGA 2
FLGB 3
ENB 4
8 OUTA
7 IN
6 GND
5 OUTB
8-Pin SOIC (M)
8-Pin DIP (N)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
ENA
FLGA
FLGB
ENB
OUTB
GND
IN
OUTA
Pin Function
Switch A Enable (Input): Logic-compatible, enable input. Active high (-1) or
active low (-2).
Fault Flag A (Output): Active-low, open-drain output. Indicates overcurrent or
thermal shutdown conditions. Overcurrent conditions must last longer than tDB B in
order to assert FLGA.
Fault Flag B (Output): Active-low, open-drain output. Low indicates overcurrent
or thermal shutdown conditions. Overcurrent conditions must last longer than tDB B
in order to assert FLGB.
Switch B Enable (Input): Logic-compatible enable input. Active-high (-1) or
active-low (-2).
Switch B (Output)
Ground
Input: Switch and logic supply input.
Switch A (Output)
June 2010
2 M9999-060410-B
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Micrel, Inc.
MIC2026/2076
Absolute Maximum Ratings(1)
P
Supply Voltage (V )INB B ........................................ –0.3V to +6V
Fault Flag Voltage (V )FLGB B ................................................+6V
Fault Flag Current (I )FLGB B ..............................................25mA
Output Voltage (V )OUTB B ....................................................+6V
Output Current (I )OUTB B .................................Internally Limited
Enable Input (I )ENB B ..................................... –0.3V to VIN + 3V
Storage Temperature (T )SB B ........................–65°C to +150 °C
ESD Rating(3)
HBM ......................................................................... 1kV
MM .........................................................................200V
Operating Ratings(2)
P
Supply Voltage (V )INB B ..................................... +2.7V to +5.5V
Ambient Temperature (T )AB B .......................... –40°C to +85°C
Junction Temperature Range (T )JB B ............. Internally Limited
Thermal Resistance
SOIC (θ )JAB B ........................................................160°C/W
PDIP (θ )JAB B ........................................................105°C/W
Electrical Characteristics(4)
P
VINB B = +5V; TAB B = 25°C, bold values indicate –40°C ≤ TAB B ≤ +85°C; unless noted
Symbol Parameter
Condition
IDDB B Supply Current
MIC20x6-1,
VEB NA
=
B
VBENB
≤
B
0.8V
(switch off), OUT = open
MIC20x6-2,
VEB NA
=
B
VBENB
≥
B
2.4V
(switch off), OUT = open
MIC20x6-1,
VEB NA
=
B
VBENB
≥
B
2.4V
(switch on), OUT = open
MIC20x6-2,
VEB NA
=
B
VBENB
≤
B
0.8V
(switch on), OUT = open
VENB B Enable Input Threshold
low-to-high transition
high-to-low transition
Enable Input Hysteresis
IENB B Enable Input Current
VENB B = 0V to 5.5V
Enable Input Capacitance
RBDS(ON)B
Switch Resistance
VINB B = 5V, IBOUTB = 500mA
VINB B = 3.3V, IBOUTB = 500mA
Output Leakage Current
MIC20x6-1, VENx ≤ 0.8V;
MIC20x6-1, VENx ≥ 2.4V, (output off)
OFF Current in Latched
Thermal Shutdown
MIC2076
(during thermal shutdown state)
tONB B Output Turn-On Delay
RLB B = 10Ω, CLB B = 1µF, see “Timing Diagrams”
tRB B
Output Turn-On Rise Time
RLB B = 10Ω, CLB B = 1µF, see “Timing Diagrams”
RLB B = 10Ω, CLB B = 1µF, see “Timing Diagrams”
tBOFFB Output Turn-Off Delay
RLB B = 10Ω, CLB B = 1µF, see “Timing Diagrams”
tFB B
Output Turn-Off Fall Time
RLB B = 10Ω, CLB B = 1µF, see “Timing Diagrams”
IBLIMITB
Short-Circuit Output Current
VBOUTB = 0V, enabled into short-circuit
Current-Limit Threshold
ramped load applied to output
Short-Circuit Response Time
V = 0V to I = IBOUTB
BOUTB
BLIMITB
(short applied to output)
June 2010
3
Min Typ Max Units
0.75 5
µA
9.5 20
µA
100 160
µA
100 160
µA
1.7
0.8 1.45
250
2.4
-1 0.01
1
1
90 140
100 170
10
V
V
mV
µA
pF
mΩ
mΩ
µA
50 µA
1.3
0.5 1.15
1.75
35
32
0.5 0.9
0.65 1.0
20
5
4.9
100
100
1.25
1.25
ms
ms
ms
µs
µs
A
A
µs
M9999-060410-B
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