CM3501-02SN CALMIRCO [California Micro Devices Corp], CM3501-02SN Datasheet - Page 3

• Manufacturer Part Number: CM3501-02SN
• Description: Dual USB Overcurrent Switch 750mA (VCC) / 100mA (VSBY)
• Manufacturer: CALMIRCO [California Micro Devices Corp]

Pin Functions
V
SEL pin is above 2V it will be selected, and V
deselected.
V
SEL pin is below 0.8V it will be selected, and V
be deselected. The two V
supply 100mA.
Current loads of up to 750mA are allowed (from Vcc).
Current loads above 750mA may cause the constant-
current limiting circuit to operate – reducing the output
voltage.
Continuous over-current loads will cause the part’s
internal temperature to rise. If the internal temperature
exceeds 150’C then any switch that is in overcurrent
mode will be immediately turned off. Any switch that is
not in overcurrent mode will remain on – it will not be
affected by the over-temperature detection. Once the
part has cooled to 125’C then the switch or switches
that were in overcurrent mode will be automatically
turned on again.
© 2003 California Micro Devices Corp. All rights reserved
09/10/03
V
MOSFET switches are designed for low voltage drops
from the voltage input pins at their full rated currents.
V
internal MOSFET switches are designed for low voltage
drops from the voltage input pins at their full rated
currents.
V
Pin No.
CC
SBY
OUT1
OUT2
SB
Pins
1
2
3
4
5
6
7
8
is the higher current power source. Whenever the
8
is the lower current power source. Whenever the
provides the power for a USB port. The internal
provides the power for a second USB port. The
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
CALIFORNIA MICRO DEVICES
430 N. McCarthy Blvd, Milpitas, California 95035
Symbol
OC2#
OC1#
V
V
GND
V
SEL
V
OUT2
OUT1
SBY
CC
Package
SOIC
Description
Negative reference for all voltages.
High current positive supply input.
Standby positive supply input. Also provides internal power.
3-level logic input. High = V
Active low when
Output voltage internally switched to either V
Output voltage internally switched to either V
Active low when
SBY
STANDARD PART ORDERING INFORMATION
power switches can only
Ordering Part Number
CM3501-02SN
V
V
OUT2
OUT1
is in overcurrent mode.
is in overcurrent mode.
SBY
Pin Functions
will be
CC
CC
, Low = V
will
Tel: [phone]
1
SBY
SEL
control which of the power switch pairs are turned on.
Set SEL high to select V
V
switches. The external device driving the SEL pin
must able to source and sink 100 A while
maintaining the proper V
OC1#, OC2#
drain outputs, indicating an overcurrent fault condition
has been detected at V
in 10msec (min.) fault blanking period after the
overcurrent fault condition has been detected, before
these outputs become active. The OC# outputs
become deasserted only when both the overcurrent
condition stops and when the voltage drop across the
switch is less than 1V. External pull-up resistors of
10k - 100k are required if the OC# outputs are used.
GND
During the cold-start interval when the input is initially
applied, internal circuitry provides a soft turn-on for
the switches, which limits peak in-rush current.
, Floating = both off
SBY
CC
CC
, or allow SEL to float to deselect both power
or V
or V
is the 3-level logic input pin that is used to
is the negative reference for all voltages.
SBY
SBY
Fax: [phone]
input source.
input source.
CM3501-02SN
Part Marking
are independent, active low open-
OUT1
IL
/V
CC
IH
or V
, set SEL low to select
levels.
www.calmicro.com
PRELIMINARY
OUT2
. There is a built-
CM3501
3