MIC20XX
Fixed and Adjustable Current Limiting Power Distribution Switches
Features
General Description
MIC20X3 - MIC20X9
The MIC20XX family of switches are current limiting,
high-side power switches, designed for general
purpose power distribution and control in digital
televisions (DTV), printers, set top boxes (STB), PCs,
PDAs, and other peripheral devices (see MIC20XX
Family Package Types and the MIC20XX Family
Member Functionality table).
- 70 mΩ Typical On-Resistance @ 5V
MIC2005A/20X9A
- 170 mΩ Typical On-Resistance @ 5V
• Enable Active-High or Active-Low
• 2.5V to 5.5V Operating Range
MIC20XX family’s primary functions are current limiting
and power switching. They are thermally protected and
will shutdown should their internal temperature reach
unsafe levels, protecting both the device and the load,
under high-current or fault conditions.
• Pre-Set Current Limit Values of 0.5A, 0.8A, and
1.2A*
• Adjustable Current Limit 0.2A to 2.0A*
(MIC20X7-MIC20X9)
• Adjustable Current Limit 0.1A to 0.9A*
(MIC20X9A)
Features include fault reporting, fault blanking to
eliminate noise-induced false alarms, output slew rate
limiting, under voltage detection, automatic-on output,
and enable pin with choice of either active low or active
high enable. The FET is self-contained, with a fixed- or
user-adjustable current limit. The MIC20XX family is
ideal for any system where current limiting and power
control are desired.
• Undervoltage Lockout (UVLO)
• Variable UVLO Allows Adjustable UVLO
Thresholds*
• Automatic Load Discharge for Capacitive Loads*
• Soft-Start Prevents Large Current Inrush
• Adjustable Slew Rate Allows Custom Slew Rates*
• Automatic-On Output After Fault
The MIC201X (3 ≤ X ≤ 9) and MIC2019A switches offer
a unique new patented feature: Kickstart which allows
momentary high-current surges up to the secondary
current limit (ILIMIT_2nd) without sacrificing overall
system safety.
• Thermal Protection
* Available on some family members
Applications
The MIC20XX family is offered, depending on the
desired features, in a space-saving 5-lead SOT-23,
6-lead SOT-23, and 2 mm x 2 mm DFN packages.
• Digital Televisions (DTV)
• Set Top Boxes
• PDAs
• Printers
• USB / IEEE 1394 Power Distribution
• Desktop and Laptop PCs
• Game Consoles
• Docking Stations
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