MIC2548A-1YM Micrel Inc, MIC2548A-1YM Datasheet - Page 17

• Manufacturer Part Number: MIC2548A-1YM
• Description: IC SW CURR LIMIT HI SIDE 8SOIC
• Manufacturer: Micrel Inc
• Type: High Sider

Specifications of MIC2548A-1YM

• Input Type: Non-Inverting
• Number Of Outputs: 1
• On-state Resistance: 80 mOhm
• Current - Peak Output: 1.5A
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• Other names: 576-3608-5

USB Power Distribution
The MIC2544A is ideal for meeting USB power
distribution requirements. Figure 8 depicts a USB Host
application. RSET should be set to a value providing a
current-limit >500mA.
The accurate current-limit of the MIC2544A will reduce
power supply current requirements. Also, fast reaction to
short circuit faults prevent voltage droop in mobile
PC applications.
Printed Circuit Board Hot-Plug
The MIC2544A/48A are ideal inrush current-limiters
suitable for hot-plug applications. Due to the integrated
charge
impedance when off and slowly becomes low impedance
as it turns on. This “soft start” feature effectively isolates
power supplies from highly capacitive loads by reducing
inrush current during hot-plug events. Figure 9 shows
how the MIC2544A may be used in a hot-plug
application.
Micrel, Inc.
April 2010
pump,
Figure 7. Flag Filter with C
the
MIC2544A/48A
OUT
= 100µF
presents
high
17
MIC2544A/2548A
M9999-043010