MIC2025/2075
Micrel
MIC2025/2075
Single-Channel Power Distribution Switch
Preliminary Information
General Description
The MIC2025 and MIC2075 are high-side MOSFET switches
optimized for general-purpose power distribution requiring
circuit protection.
The MIC2025/75 are internally current limited and have
thermal shutdown that protects the device and load. The
MIC2075 offers “smart” thermal shutdown that reduces cur-
rent 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 provided that is
asserted during overcurrent and thermal shutdown condi-
tions.
The MIC2025/75 is available in the MM8™ 8-lead MSOP and
8-lead SOP.
Features
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140mΩ maximum on-resistance
2.7V to 5.5V operating range
500mA minimum continuous output current
Short-circuit protection with thermal shutdown
Fault status flag with 3ms filter eliminates false asser-
tions
Undervoltage lockout
Reverse current flow blocking (no “body diode”)
Circuit breaker mode (MIC2075) reduces power
consumption
Logic-compatible input
Soft-start circuit
Low quiescent current
Pin-compatible with MIC2525
Applications
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USB peripherals
General purpose power switching
ACPI power distribution
Notebook PCs
PDAs
PC card hot swap
Typical Application
V
CC
2.7V to 5.5V
10k
Logic Controller
VIN
1µF
ON/OFF
OVERCURRENT
GND
MIC2025/75
EN
FLG
GND
NC
OUT
IN
OUT
NC
0.1µF
Load
MM8 is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
March 2000
1
MIC2025/2075
MICREL [ MICREL SEMICONDUCTOR ]
