CM3103-01SF CALMIRCO [California Micro Devices Corp], CM3103-01SF Datasheet - Page 2

• Manufacturer Part Number: CM3103-01SF
• Description: 400mA SMARTOR REGULATOR Vaux SWITCH
• Manufacturer: CALMIRCO [California Micro Devices Corp]

Ordering Information
© 2004 California Micro Devices Corp. All rights reserved.
2
Note: This drawing is not to scale.
Pins
PIN(S)
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: [phone]
8
5-8
1
2
3
4
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Power SOIC
Package
NAME
V
V
GND
N.C.
V
OUT
AUX
CC
DESCRIPTION
Positive input supply for the voltage regulator. Whenever this supply voltage exceeds the V
level (4.4V), it will immediately be given priority and be used to power the regulator output. If this
supply voltage falls below the V
provide power for the regulator output. An internal hysteresis voltage of 0.2V is used to prevent any
chatter during selection and deselection of V
kept below 0.3 ohm to ensure changeover disturbances do not exceed the hysteresis level.
If the connection to V
not be necessary. Otherwise a bypass filter capacitor in the range of 1µF to 10µF will ensure ade-
quate filtering.
Regulator output. Power is provided from the regulator or via the low impedance auxiliary switch.
This output requires a capacitance of 10µF to ensure regulator stability and minimize the peak out-
put disturbance during power supply changeover.
Auxiliary voltage power source. This supply is selected only when V
these conditions an internal switch that provides a very low impedance connection directly between
V
The negative reference for all voltages. Also functions as a thermal path for heat dissipation.
OUT
and V
CM3103-01SA
Ordering Part
Number
AUX
PART NUMBERING INFORMATION
PACKAGE / PINOUT DIAGRAM
V
V
N.C.
V
OUT
AUX
is enabled .
CC
Standard FInish
1
8-pin Power SOIC
CC
PIN DESCRIPTIONS
is made within a few inches of the main input filter, a bypass capacitor may
TOP VIEW
1
2
3
4
CCDES
Part Marking
CM3103SA
8
7
6
5
level (4.2V) it will immediately be deselected and no longer
CC
L Fax: [phone]
GND
GND
GND
GND
. The effective source impedance of V
Ordering Part
CM3103-01SF
Number
Lead-free Finish
1
CC
L
falls below 4.2V. Under
www.calmicro.com
Part Marking
CM3103SF
CM3103
CC
should be
CCSEL
01/28/04