MIC2026 Datasheet PDF - Micrel Semiconductor

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MIC2026
Micrel Semiconductor

Part Number MIC2026
Description Dual-Channel Power Distribution Switch
Page 16 Pages


MIC2026 datasheet pdf
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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
140mmaximum 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 = 10, CLB B = 1µF, see “Timing Diagrams”
tRB B
Output Turn-On Rise Time
RLB B = 10, CLB B = 1µF, see “Timing Diagrams”
RLB B = 10, CLB B = 1µF, see “Timing Diagrams”
tBOFFB Output Turn-Off Delay
RLB B = 10, CLB B = 1µF, see “Timing Diagrams”
tFB B
Output Turn-Off Fall Time
RLB B = 10, 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
m
m
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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Micrel, Inc.
MIC2026/2076
Symbol Parameter
Condition
Min Typ Max Units
tD
Overcurrent Flag Response
VINB B = 5V, apply VBOUTB = 0V until FLG low
1.5 3 7 ms
Delay
VINB B = 3.3V, apply VBOUTB = 0V until FLG low
3 ms
Undervoltage Lockout
Threshold
VINB B rising
VINB B falling
2.2 2.4
2.0 2.15
2.7
2.5
V
V
Error Flag Output Resistance
ILB B = 10mA, VINB B = 5V
10 25
ILB B = 10mA, VINB B = 3.3V
15 40
Error Flag Off Current
Overtemperature Threshold(5)
PP
VBFLAGB = 5V
TJB B increasing, each switch
TJB B decreasing, each switch
10
140
120
µA
°C
°C
TJB B increasing, both switches
TJB B decreasing, both switches
160 °C
150 °C
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended.
4. Specification for packaged product only.
5. 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.
June 2010
4 M9999-060410-B



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