MIC2095 Datasheet, PDF (1/25 Pages) Micrel Semiconductor – Current-Limiting Power Distribution Switches

MIC2095/MIC2097/MIC2098/MIC2099
Current-Limiting Power Distribution Switches
General Description
Features
The MIC2095/97/98/99 family of switches are self-
contained, current-limiting, high-side power switches, ideal
for power-control applications. These switches are useful
for general purpose power distribution applications such as
digital televisions (DTV), printers, set-top boxes (STB),
PCs, PDAs, and other peripheral devices.
The current limiting switches feature either a fixed
0.5A/0.9A or resistor programmable output current limit.
The family also has fault blanking to eliminate false noise-
induced, over current conditions. After an over-current
condition, these devices automatically restart if the enable
pin remains active. The MIC2097 switch offers a unique
new patented Kickstart feature, which allows momentary
high-current surges up to the secondary current limit
(I_{LIMIT_2nd}). This is useful for charging loads with high inrush
currents, such as capacitors.
The MIC2095/97/98/99 family of switches provides under-
voltage, over-temperature shutdown, and output fault
status reporting. The family also provides either an active
low or active high, logic level enable pin.
The MIC2095/97/98/99 family is offered in a space saving
1.6mm x 1.6mm Thin MLF^® (TMLF) package.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
• MIC2095: 0.5A fixed current limit
• MIC2098: 0.9A fixed current limit
• MIC2097/99: Resistor programmable current limit
– 0.1A to 1.1A
• MIC2097: Kickstart for high peak current loads
• Under voltage lock-out (UVLO)
• Soft start prevents large current inrush
• Automatic-on output after fault
• Thermal protection
• Enable active high or active low
• 170mΩ typical on-resistance @ 5V
• 2.5V – 5.5V operating range
Applications
• Digital televisions (DTV)
• Set top boxes
• PDAs
• Printers
• USB / IEEE 1394 power distribution
• Desktop and laptop PCs
• Game consoles
• USB keyboard
• Docking stations
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Typical Application
MIC2095 USB Power Switch
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
September 2010
M9999-092010-C