MIC2007 Datasheet, PDF (1/17 Pages) Micrel Semiconductor – Adjustable Current Limit Power Distribution Switch

MIC2007/2017
Adjustable Current Limit
Power Distribution Switch
General Description
Features
The MIC2007 and MIC2017 are current limiting, high-
side power switches, designed for general purpose
power distribution and control in PCs, PDAs, printers
and other self-powered systems.
The MIC2007 and MIC2017’s primary functions are
current limiting and power switching. They are thermally
protected and will shutdown should their internal
temperature reach unsafe levels. This protects both the
device and the load under high current or fault
conditions.
Features include: user adjustable output slew rate
limiting, automatic load discharge and under voltage
detection. Both devices offer user programmable current
limiting thereby providing designers a continuous
spectrum of current limits from 200mA to 2 Amps.
The MIC2017 offers a unique new feature: Kickstart™,
which allows momentary high current surges to pass
unrestricted without sacrificing overall system safety.
• 70mΩ typical on-resistance
• 2.5V – 5.5V operating range
• User adjustable current limit: 0.2A – 2.0A
• Kickstart™
• User adjustable output slew rate control
• Automatic load discharge
• Thermal protection
• Under voltage lock-out
• Low quiescent current
Applications
• USB / IEEE 1394 power distribution
• Desktop and laptop PCs
• Set top boxes
• Game consoles
The MIC2007 and MIC2017 are excellent choices for
USB and IEEE 1394 (FireWire) applications or for any
system where current limiting and power control are
desired.
The MIC2007 and MIC2017 are offered in space saving
6-pin SOT-23 and 2mm x 2mm MLF^TM packages.
• PDAs
• Printers
• Docking stations
• Chargers
_________________________________________________________________________________________________________
Typical Application
5V Supply
USB
Controller
MIC2007
MIC2017
VIN
VOUT
CSLEW
GND
ENABLE I_LIMIT
V_BUS
D+/D-
USB
Port
D+/D-
USB
Port
Figure 1. Typical Application Circuit
Kickstart is a trademark of Micrel, Inc
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
October 2005
M9999-102805