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Micrel Semiconductor

MIC2026A Datasheet Preview

MIC2026A Datasheet

Dual-Channel Power Distribution Switch

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MIC2026A/2076A
Dual-Channel Power Distribution Switch
General Description
Features
The MIC2026A and MIC2076A are high-side MOSFET
switches optimized for general-purpose power distribution
requiring circuit protection. The MIC2026A is particularly
well suited for USB applications.
The MIC2026A/2076A are internally current limited and
have thermal shutdown that protects the device and load.
The MIC2076A offers “smart” shutdown that reduces
current consumption in fault modes. When the MIC2076A
goes into thermal shutdown due to current limiting, the
output is latched off until the switch is reset. The
MIC2076A can be reset by removing the load, toggling the
enable input, or cycling VIN.
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 or
thermal shutdown conditions. Transient faults are internally
filtered.
The MIC2026A/2076A are available in an 8-pin SOIC
package.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
100mtypical RDS(ON) at 5.0V
140mmaximum RDS(ON) at 5.0V
2.7 V to 5.5 V operating range
500mA minimum continuous current per channel
Short circuit protection with thermal shutdown
Thermally isolated channels
Soft-start circuit
Fault status flag with 3ms filter eliminates false
assertions
UVLO (Undervoltage lockout)
Reverse current flow blocking (no “body diode”)
Circuit breaker mode (MIC2076A)
Pin compatible with the MIC2026/2076
Logic-compatible inputs
Low quiescent current
Applications
USB peripherals
General purpose power switching
ACPI power distribution
Notebook PCs
PDAs
PC card hot swap
_______________________________________________________________________________________________
Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 2009
M9999-072309-B
(408) 955-1690




Micrel Semiconductor

MIC2026A Datasheet Preview

MIC2026A Datasheet

Dual-Channel Power Distribution Switch

No Preview Available !

Micrel, Inc.
Ordering Information
Part Number
MIC2026A-1YM
MIC2026A-2YM
MIC2076A-1YM
MIC2076A-2YM
Enable
Active High
Active Low
Active High
Active Low
Temperature Range
–40° to +85°C
–40° to +85°C
–40° to +85°C
–40° to +85°C
MIC2026A/2076A
Package
8- Pin SOIC
8- Pin SOIC
8- Pin SOIC
8- Pin SOIC
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pin Configuration
ENA 1
FLGA 2
FLGB 3
ENB 4
8 OUTA
7 IN
6 GND
5 OUTB
8-Pin SOIC (M)
Pin Description
Pin Number
1
2
Pin Name
ENA
FLGA
3 FLGB
4 ENB
5 OUTB
6 GND
7 IN
8 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. A logic LOW state Indicates
overcurrent or thermal shutdown conditions. Overcurrent conditions must last longer than tDB B
in order to assert FLGA. The FLGA pin can be left floating; however, fault reporting
information will be lost.
Fault Flag B (Output): Active-low, open-drain output. A logic LOW state indicates
overcurrent or thermal shutdown conditions. Overcurrent conditions must last longer than tDB B
in order to assert FLGB. The FLGB pin can be left floating; however, fault reporting
information will be lost.
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).
July 2009
2 M9999-072309-B
(408) 955-1690


Part Number MIC2026A
Description Dual-Channel Power Distribution Switch
Maker Micrel Semiconductor
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MIC2026A Datasheet PDF






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