CMPWR130R California Micro Devices, CMPWR130R Datasheet

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CMPWR130R

Manufacturer Part Number
CMPWR130R
Description
300mA SmartOR Regulator with VAUX
Manufacturer
California Micro Devices
Datasheet
1.CMPWR130R.pdf (8 pages)
01/14/04
Features
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Applications
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© 2004 California Micro Devices Corp. All rights reserved.
Typical Application Circuit
V
V
Automatic detection of V
Glitch-free output during supply transitions
Built-in hysteresis during supply selection
300mA output maximum load current
Overload current protection
Short circuit current protection
Operates from either V
8-pin SOIC package
Lead-free version available
PCI adapter cards
Network Interface Cards (NICs)
Dual power systems
Systems with standby capabilities
AUX
CC
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
3.3V
5V
+
C
1
µ
IN
F
300mA SmartOR
V
CMPWR130
CC
CC
CC
GND
or V
DRIVE
input supply
V
OUT
OUT
MGSF1PO2ELT1
+
C
4
µ
OUT
F
TM
GND
V
3.3V
300mA
Regulator with V
OUT
GND
V
CC
Simplified Electrical Schematic
Product Description
The SmartOR
tor that delivers up to 300mA of load current at a fixed
3.3V output. An internal threshold level (TYP 4.1V) is
used to prevent the regulator from being operated
below dropout voltage. The device continuously moni-
tors the input supply and will automatically disable the
regulator when V
When the regulator is disabled, the DRIVE control sig-
nal (Active Low) is enabled, which allows an external
PMOS switch to power the load from an auxiliary 3.3V
supply.
When V
threshold, the control signal for the external PMOS
switch is disabled and the regulator is once again
enabled.
All the necessary control circuitry needed to provide a
smooth and automatic transition between the supplies
has been incorporated. This allows V
cally switched without loss of output voltage.
The CMPWR130 is housed in a 8-pin SOIC package
and is available with optional lead-free finishing.
V
DESELECT
4.1V
+
-
CC
L Fax: 408.263.7846
is restored to a level above the select
TM
CMPWR130 is a low dropout regula-
AUX
V
CC
3.3V
REF
falls below the threshold level.
Switch
-
+
ENABLE
L
www.calmicro.com
CMPWR130
CC
to be dynami-
DRIVE
V
3.3V
300mA
OUT
1

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CMPWR130R Summary of contents

Page 1

... GND µ © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 01/14/04 TM Regulator with V Product Description The SmartOR tor that delivers up to 300mA of load current at a fixed 3.3V output. An internal threshold level (TYP 4.1V) is used to prevent the regulator from being operated below dropout voltage ...

Page 2

... The DRIVE pin is pulled HIGH to V ensures the auxiliary remains isolated during normal regulator operation. The output current sinking abil- ity of this logic signal is equivalent to a resistor. © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 2 PACKAGE / PINOUT DIAGRAM ...

Page 3

... PART NUMBERING INFORMATION Standard FInish 1 Number Part Marking CMPWR130S ABSOLUTE MAXIMUM RATINGS STANDARD OPERATING CONDITIONS L Tel: 408.263.3214 CMPWR130 Lead-free Finish Ordering Part 1 Number Part Marking CMPWR130R CMPWR130R RATING +2000 [GND - 0.5] to +6.0 [GND - 0.5] to +6.0 [GND - 0. 0.5] CC -40 to +150 +125 0.6 VALUE 5 300 4 ...

Page 4

... Note 3: Ground pin current consists of controller current (0.15mA) and regulator current if enabled. The controller always draws 0.15mA from either V currents a small increase occurs due to current limit protection circuitry. © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 4 CONDITIONS 0mA < ...

Page 5

... AUX 100 0 0 1.0 2.0 3 Figure 1. Supply Current vs Voltage (V 3.40 3.35 3.30 3.25 3.20 0 100 200 Load Current (mA) Figure 3. Load Regulation © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 01/14/ 3.3V AUX 4.0 5.0 6.0 (V) = 3.3V) AUX 300 400 L Tel: 408.263.3214 CMPWR130 660 640 620 600 ...

Page 6

... V (offset = 3.3V) OUT 1 Ch1 Ch2 100mV 2V M 10µs Figure 9. Load Transient (10% to 90%) Step Response © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 6 Tek V OUT (300mA Load) 2 Ch2 3.06V = 0V) Figure 6. V AUX Teck Run: 2.5MS/s ...

Page 7

... CMPWR130 with an θ overall of 100°C/W which allows up to 550mW safely dissipated. © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 01/14/04 ) consists prima- D θ ) thermal CA θ ...

Page 8

... Controlling dimension: inches * This is an approximate number which may vary. © 2004 California Micro Devices Corp. All rights reserved. 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 8 SOIC 8 Inches Min Max 0.053 ...

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