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

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CM3103-01SF

Manufacturer Part Number
CM3103-01SF
Description
400mA SMARTOR REGULATOR Vaux SWITCH
Manufacturer
CALMIRCO [California Micro Devices Corp]
Datasheet
01/28/04
Features
Applications
© 2004 California Micro Devices Corp. All rights reserved.
Typical Application Circuit
V
V
AUX
CC
Continuous 3.3V / 400mA output from two inputs
Complete Power Management solution
Built-in hysteresis when selecting input supplies
Integrated switch featuring low RDS
typ.)
Foldback current limiting protection
Thermal overload shutdown protection
8-pin SOIC package
Lead-free version available
PCI adapter cards with Wake-On-LAN
Network Interface Cards (NICs)
Multiple power supply systems
Systems with standby capabilities
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
3.3V
5V
+
C
1
µ
IN
F
400mA SmartOR
V
V
AUX
CC
CM3103
GND
V
OUT
3.3V/400mA
ON
+
(0.25Ω
C
10
EXT
µ
F
TM
GND
Regulator with V
V
OUT
V
GND
V
Simplified Electrical Schematic
Product Description
The CM3103 combines a fixed voltage regulator and a
V
age regulator is capable of delivering up to 400mA con-
tinuously at 3.3V. The output power is provided from
two independent input voltage sources on a prioritized
basis. Power is always taken in priority of V
V
When V
enables the regulator, producing a stable 3.3V output
at V
When only V
a low impedance direct connection (0.25Ω typ.) from
V
All the necessary control circuitry needed to provide a
smooth and automatic transition between both supplies
has been incorporated. This allows the V
ply to be dynamically switched without loss of output
voltage.
The CM3103 is available with optional lead-free finish-
ing.
AUX
CC
AUX
AUX
AUX
Vdeselect
4.2V
OUT
.
to V
switch in a single 8-pin SOIC package. The volt-
Controller
, while disabling the V
CC
0.25Ω
AuxSw
L Fax: 408.263.7846
OUT
+
-
(5V) is present, the device automatically
AUX
.
AuxSw
Enable
(3.3V) is present, the device provides
AUX
3.3V
Switch
+
-
Regulator Amp
AUX
L
www.calmicro.com
switch.
CM3103
CC
input sup-
CC
, then
V
OUT
1

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CM3103-01SF Summary of contents

Page 1

... California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 01/28/04 TM Regulator with V Product Description The CM3103 combines a fixed voltage regulator and a V AUX age regulator is capable of delivering up to 400mA con- (0.25Ω tinuously at 3.3V. The output power is provided from ...

Page 2

... CC is enabled . AUX PART NUMBERING INFORMATION Standard FInish 1 Number Part Marking CM3103SA GND GND GND GND . The effective source impedance of V falls below 4.2V. Under CC Lead-free Finish Ordering Part 1 Number CM3103-01SF L Fax: 408.263.7846 L www.calmicro.com CM3103 CCSEL should be CC Part Marking CM3103SF 01/28/04 ...

Page 3

... California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 01/28/04 ABSOLUTE MAXIMUM RATINGS θ ) must not exceed 80°C/W. This is typically achieved with 2 square inches of copper JA STANDARD OPERATING CONDITIONS L Tel: 408.263.3214 CM3103 RATING +2000 [GND - 0.5] to +6.0 [GND - 0.5] to +4.0 -40 to +150 +125 Internally Limited VALUE 5 ...

Page 4

... The CC supply should be kept to less than 0.3 ohms to ensure precise switching. CC (SEE NOTE 1) MIN TYP 3.135 3.300 3.465 410 500 150 20 2 4.40 4.00 4.20 0.20 0.25 5 0.8 0.20 0.20 0.80 1.00 160 20 L Fax: 408.263.7846 L www.calmicro.com CM3103 MAX UNITS 4. Ω 0.40 µA 100 1.5 mA 0.30 mA 0.30 mA 1.50 mA 2.00 mA °C °C 01/28/04 ...

Page 5

... Performance Information CM3103 Typical DC Characteristics (nominal conditions unless specified otherwise) CC 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 Input Voltage [V] 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0 100 200 Load Current [mA] © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 01/28/04 0.5 0.4 0.3 0.2 0.1 0 3.4 3.3 3.2 3.1 3.0 3.5 300 400 L Tel: 408.263.3214 L CM3103 ...

Page 6

... Performance Information (cont’d) CM3103 Typical DC Characteristics (cont’d, nominal conditions unless specified otherwise) 3.45 3.40 3.35 3.30 3.25 3.20 3.15 0 100 200 Load Current [mA] 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 100 200 Load Current [mA] © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 6 300 400 ...

Page 7

... Performance Information (cont’d) CM3103 Transient Characteristics (nominal conditions unless specified otherwise) (V source resistance set to 0.2Ω © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 01/28/ Tel: 408.263.3214 L Fax: 408.263.7846 CM3103 www.calmicro.com ...

Page 8

... Performance Information (cont’d) CM3103 Transient Characteristics (cont’d; nominal conditions unless specified otherwise) (V source resistance set to 0.2Ω) CC © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 8 L Fax: 408.263.7846 L www.calmicro.com CM3103 01/28/04 ...

Page 9

... In the event of no copper area being dedicated for heat spreading, a multi-layer board construction, using only the minimum size pad layout, will provide the CM3103 with an overall θ of 70°C/W which allows up to 780mW to be safely JA dissipated for the maximum junction temperature. © ...

Page 10

... Mechanical Details SOIC-8 Mechanical Specifications Dimensions for CM3103 devices packaged in 8-pin SOIC packages are presented below. For complete information on the SOIC-8 package, see the California Micro Devices SOIC Package Informa- tion document. PACKAGE DIMENSIONS Package Pins Millimeters Dimensions Min Max A 1.35 1.75 A 0.10 0. ...

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