CM3002
Micropower 1.0A Low Dropout CMOS Regulators
Features
•
•
•
•
•
•
•
•
•
•
•
Regulated output options: 1.5, 1.8, 2.5 and
3.3 volts
1.0A output current
Operates from 3.3V supply (5.0V for CM3002-33)
Very low dropout voltage on CM3002-33
products (500mV@1A)
Enable Output Control for power-up sequencing
Low quiescent operating current (< 600
µ
A typical)
Current limit protection
Thermal overload protection
Reverse voltage protection
Available in thermally-enhanced SOIC-8 and
MSOP-8 (CM3002-33MA/MF) packages
Lead-free versions available
Product Description
The CM3002 family of regulators are very low dropout
regulators that deliver up to 1.0A of load current at a
fixed voltage output. Input and output voltage options
for the CM3002 family devices are presented in
Table 1.
Operating from a single input supply, these devices are
ideally suited for powering low voltage “core” proces-
sors, especially where a 3.3V source is already avail-
able.
These regulators feature a dedicated control input (EN,
Active High) for power-up sequencing flexibility. When
this input is taken low, the regulator output is disabled.
In this state, the supply current will drop to a low level
to ensure all the internal control circuitry still remains
active. This provides excellent start-up response when-
ever the device comes out of shutdown.
The CM3002 family of regulators is fully protected,
offering both overload current limiting and high temper-
ature thermal shutdown. Housed in space saving ther-
mally-enhanced SOIC-8 and MSOP-8 (CM3002-33MA/
MF) packages, these devices ensure maximum junc-
tion-to-ambient power dissipation.
The CM3002 is available with optional lead-free finish-
ing.
Applications
•
•
•
Low Voltage "Core" Processors
Peripheral Adapter Cards
Portable/Battery-Powered Devices
Table 1: CM3002 Regulator Family
PRODUCT
CM3002-15SA/SF
CM3002-18SA/SF
CM3002-25SA/SF
CM3002-33SA/SF
CM3002-33MA/MF
INPUT
VOLTAGE
3.3V
3.3V
3.3V
5.0V or 3.3V
5.0V or 3.3V
OUTPUT VOLTAGE
1.5V
1.8V
2.5V
3.3V
3.3V
Typical Application Circuit
Simplified Electrical Schematic
V
CC
V
CC
Supply
Voltage +
-
V
OUT
EN
+
1
µ
F
100nF
GND
+
10
µ
F
V
OUT
EN
Thermal Sensor
&
Current Limit
Reference
Voltage
+
EN
-
V
OUT
GND
©
2004 California Micro Devices Corp. All rights reserved.
08/16/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
1
CM3002
PACKAGE / PINOUT DIAGRAMS
Top View
EN
V
CC
V
OUT
N.C.
1
2
3
4
8
7
6
5
Top View
GND
GND
GND
GND
EN
V
CC
V
OUT
N.C.
1
2
3
4
8
7
6
5
GND
GND
GND
GND
8-pin SOIC
(CM3002-xxSA/SF)
Note: These drawings are not to scale.
8-pin MSOP
(CM3002-33MA/MF only)
PIN DESCRIPTIONS
PIN(S)
1
NAME
EN
DESCRIPTION
A logic input control to enable the regulator output. When EN is asserted (logic high), it allows out-
put regulation to commence. When EN is deasserted (logic low), the regulator pass transistor (N-
channel MOSFET) is forced into a high impedance mode.
All other internal circuitry is unaffected by the state of the EN input and will always remain powered
whenever V
CC
is present.
An internal pull-up current (2µA) from V
CC
must be overdriven in order to apply a Logic Low to the
EN control input.
The EN control input is intended to be used for power-up sequencing.
The input power supply for the regulator. If this input is within a few inches of the main supply filter,
a capacitor may not be necessary. Otherwise an input filter capacitor of approximately 1uF to 10uF
will ensure adequate filtering.
The regulator voltage output used to power the load. A nominal output capacitor of 10uF is suffi-
cient to minimize any transient disturbances under normal operating conditions. Additional output
capacitance can be used to further improve transient load response.
These pins have no connection to the internal device. To provide additional thermal performance,
these pins can be connected directly to the PC board GND plane.
The negative reference for all voltages.
2
V
CC
3
V
OUT
4
5,6,7,8
N.C.
GND
Ordering Information
PART NUMBERING INFORMATION
Standard Finish
Regulator
CM3002-15
CM3002-18
CM3002-25
CM3002-33
CM3002-33
Pins
8
8
8
8
8
Package
Power SOIC
Power SOIC
Power SOIC
Power SOIC
Power MSOP
Ordering Part
Number
1
CM3002-15SA
CM3002-18SA
CM3002-25SA
CM3002-33SA
CM3002-33MA
Part Marking
CM3002-15SA
CM3002-18SA
CM3002-25SA
CM3002-33SA
233
Lead-free Finish
Ordering Part
Number
1
CM3002-15SF
CM3002-18SF
CM3002-25SF
CM3002-33SF
CM3002-33MF
Part Marking
CM3002-15SF
CM3002-18SF
CM3002-25SF
CM3002-33SF
233R
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
©
2004 California Micro Devices Corp. All rights reserved.
2
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
08/16/04
CM3002
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
ESD Protection (HBM)
Pin Voltages
V
CC
EN
V
OUT
Storage Temperature Range
Operating Temperature Range
Ambient
Junction
Power Dissipation (Note 1)
RATING
+2000
[GND - 0.4] to [+6.0]
[GND - 0.4] to [+6.0]
[GND - 0.4] to [+6.0]
-40 to +150
0 to +70
0 to +150
Internally Limited
UNITS
V
V
V
V
°C
°C
°C
W
Note 1: The SOIC and MSOP packages are thermally enhanced through the use of a fused integral leadframe. The power rating is
based on a printed circuit board heat spreading capability equivalent to 2 square inches of copper connected to the GND
pins. Typical multi-layer boards using power plane construction will provide this heat spreading ability without the need for
additional dedicated copper area. Please consult with factory for thermal evaluation assistance.
STANDARD OPERATING CONDITIONS
PARAMETER
V
CC
(CM3002-15SA, CM3002-18SA, CM3002-25SA)
V
CC
(CM3002-33SA, CM3002-33MA)
Ambient Operating Temperature Range
Load Current
C
EXT
RATING
3.0 to 3.6
3.0 to 5.5
0 to +70
0 to +1000
10 +20%
UNITS
V
V
°C
mA
µF
©
2004 California Micro Devices Corp. All rights reserved.
08/16/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
3
CM3002
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS
(SEE NOTE 1)
SYMBOL
V
OUT
PARAMETER
Regulator Output Voltage
CM3002-15SA/SF
CM3002-18SA/SF
CM3002-25SA/SF
CM3002-33SA/SF, -33MA/MF
Overload Current Limit
Load Regulation
CM3002-15SA/SF, -18SA/SF,
-25SA/SF
CM3002-33SA/SF, -33MA/MF
Line Regulation
xx
CM3002-15SA/SF
CM3002-18SA/SF
CM3002-25SA/SF
CM3002-33SA/SF, -33MA/MF
Quiescent Current
CM3002-15SA/SF
CM3002-18SA/SF
CM3002-25SA/SF
CM3002-33SA/SF, -33MA/MF
Quiescent Current
CM3002-15SA/SF
CM3002-18SA/SF
CM3002-25SA/SF
CM3002-33SA/SF, -33MA/MF
Ground Current
CM3002-15SA/SF
CM3002-18SA/SF
CM3002-25SA/SF
CM3002-33SA/SF, -33MA/MF
Ground Current
CM3002-15SA/SF
CM3002-18SA/SF
CM3002-25SA/SF
CM3002-33SA/SF, -33MA/MF
V
CC
Pin Reverse Leakage
Enable Input Logic High Threshold
Enable Input Logic Low Threshold
Enable Input Current
Shutdown Temperature
Thermal Hysteresis
CONDITIONS
0mA < I
LOAD
< 1000mA
0mA < I
LOAD
< 1000mA
0mA < I
LOAD
< 1000mA
0mA < I
LOAD
< 1000mA; V
CC
=5.0
MIN
1.42
1.72
2.40
3.10
TYP
1.50
1.80
2.50
3.30
1500
10mA < I
LOAD
< 1000mA; V
CC
=3.3V
10mA < I
LOAD
< 1000mA; V
CC
=5.0V
I
LOAD
= 5mA; 3.0V < V
CC
< to 5.5V
I
LOAD
= 5mA; 3.0V < V
CC
< to 5.5V
I
LOAD
= 5mA; 3.0V < V
CC
< to 5.5V
I
LOAD
= 5mA; 4.5V < V
CC
< to 5.5V
EN tied to V
CC
; I
LOAD
= 0mA
EN tied to V
CC
; I
LOAD
= 0mA
EN tied to V
CC
; I
LOAD
= 0mA
EN tied to V
CC
; I
LOAD
= 0mA
EN tied to GND; I
LOAD
= 0mA
EN tied to GND; I
LOAD
= 0mA
EN tied to GND; I
LOAD
= 0mA
EN tied to GND; I
LOAD
= 0mA
I
LOAD
= 0mA
I
LOAD
= 0mA
I
LOAD
= 0mA
I
LOAD
= 0mA
I
LOAD
= 1000mA
I
LOAD
= 1000mA
I
LOAD
= 1000mA
I
LOAD
= 1000mA
V
OUT
= 3.3V; V
CC
= 0V
1.5
Internal current source from V
CC
2
160
25
0.3
10
20
20
20
20
30
20
500
500
500
600
150
150
150
200
500
500
500
600
500
500
500
600
1
900
900
900
900
300
300
300
300
900
900
900
900
900
900
900
900
100
MAX
1.58
1.88
2.60
3.50
UNITS
V
V
V
V
mA
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
V
V
µA
°C
°C
I
LIM
V
R LOAD
V
R LINE
I
Q
I
Q
I
GND
I
GND
I
RCC
V
IH
V
IL
I
EN
T
DISABLE
T
HYST
Note 1: Operating Characteristics are over Standard Operating Conditions unless otherwise specified.
©
2004 California Micro Devices Corp. All rights reserved.
4
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
08/16/04
CM3002
Performance Information
CM3002-15SA/SF Typical DC Characteristics (nominal conditions unless specified otherwise)
Supply Current vs. Voltage (EN=VCC)
700
Supply Current [uA]
Supply Current [uA]
Supply Current vs. Voltage (EN=GND)
700
600
500
400
300
200
100
0
0
1
2
3
VCC [V]
4
5
600
500
400
300
200
100
0
0
1
2
3
V
CC [V]
4
5
Line Regulation with 1A Load
1.58
1.54
VOUT[V]
Ground Current [uA]
Ground Current vs. Output Load
700
600
500
400
300
200
100
0
0
200
400 600 800 1000 1200
Load Current [mA]
1.56
1.52
1.50
1.48
1.46
1.44
1.42
3.0
3.1
3.2
3.3 3.4
VCC [V]
3.5
3.6
Load Regulation
1.58
1.56
1.54
VOUT[V]
Current Limiting Protection
1.6
1.4
1.2
VOUT[V]
1.52
1.50
1.48
1.46
1.44
1.42
0
200
400
600
800 1000 1200
Load Current [mA]
1.0
0.8
0.6
0.4
0.2
0.0
0
500
1000
1500
Load Current [mA]
2000
©
2004 California Micro Devices Corp. All rights reserved.
08/16/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
5
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