CM3003-25SF [CALMIRCO]
1.5 Amp Dual Mode Low Dropout CMOS Regulator; 1.5安培双模式低压降CMOS稳压器
| 型号： | CM3003-25SF |
| 厂家： | 
CALIFORNIA MICRO DEVICES CORP |
| 描述： | 1.5 Amp Dual Mode Low Dropout CMOS Regulator |
| 文件： | 总11页 (文件大小：191K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CM3003
1.5 Amp Dual Mode Low Dropout CMOS Regulator
Product Description
Features
•
•
•
•
•
•
•
•
•
•
Adjustable Output or Internally Fixed
The CM3003 is a family of very low dropout regulators
that offers dual mode operation. When the Adjust con-
trol pin (ADJ) is grounded, these devices automatically
enter a fixed voltage mode and deliver either a 1.8V or
2.5V output capable of supplying 1.5A, depending on
the device utilized. When the Adjust pin is connected to
an external resistor network the device automatically
operates as an adjustable regulator. The Adjust pin can
also be tied directly to the OUT pin which configures
the CM3003 as a 1.2V regulator.
375mV dropout at 1.5A load current
Operates from 2.2V to 5.5V input supply
Low Ground current (330µA at 1.5A Load)
Minimal output capacitance required
Current Limit Protection
Thermal Overload Protection
Reverse Voltage Protection
Thermally enhanced 8-pin SOIC package
Lead-free versions available
An Enable control pin (EN) allows the device to be
placed in a low current mode.
Applications
The CM3003 devices are fully protected, offering both
overload current limiting, short circuit protection and
high temperature thermal shutdown. These devices
also includes reverse voltage protection that minimizes
any reverse current flow back into the output pin.
•
•
•
•
•
Low Voltage "Core" processors
Graphics Cards
Gigabit NIC Cards
PC Motherboards
Notebooks
The CM3003 devices are housed in a space saving, 8-
pin power SOIC packages which has been thermally
enhanced (integral leadframe) to ensure maximum
junction to ambient power dissipation.
The CM3003 devices are available with optional lead-
free finishing.
Typical Application Circuit
Simplified Electrical Schematic
2.2V-5.5V
Controller
IN
CM3003
Over Current
Short Circuit
Over Temp
2.2V - 5.5V
1.8V/2.5V@1.5A
EN
VIN
VOUT
IN
OUT
ADJ
EN
EN
10µF
100n
F
+
10µF
GND
1.2V Reference
Voltage
-
1.5 AMP
2.5V Output when ADJ = GND
OUT
GND
Fixed
130K
Automatically selects Adjustable Output
(when external resistors are present)
ADJ
Adj
120K
GND
© 2004 California Micro Devices Corp. All rights reserved.
01/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com
1
CM3003
PACKAGE / PINOUT DIAGRAM
TOP VIEW
1
2
3
4
8
7
6
5
GND
GND
GND
GND
EN
IN
OUT
ADJ
8-pin Power SOIC
Note: This drawing is not to scale.
PIN DESCRIPTIONS
PIN(S)
NAME
DESCRIPTION
1
EN
Enable/shutdown input. When EN is asserted high (V ≥ 1.2V), the regulator is enabled. When EN
EN
is asserted low (VEN ≤0.4V), the regulator is shut down.
2
3
IN
Positive input voltage for the regulator. If this input pin is greater than 2 inches from the main input
filter, a 10µF ceramic capacitor is recommended for adequate filtering.
OUT
The regulated voltage output. An output capacitor of 10µF is recommended to minimize any tran-
sient load disturbances under normal operating conditions. Additional output capacitance can be
used to further improve transient load response.
4
ADJ
Feedback input. When ADJ is grounded, the device enters fixed voltage mode. When ADJ is con-
nected to an external resistor network, the device operates as an adjustable regulator. The Adjust
pin can also be tied directly to the OUT pin which configures the CM3003 as a 1.2V regulator.
5-8
GND
The negative reference for all voltages. Also functions as a thermal path for heat dissipation.
Ordering Information
PART NUMBERING INFORMATION
Standard Finish
Lead-free Finish
Ordering Part
Ordering Part
1
1
Pins
Output Voltage
Package
SOIC-8
SOIC-8
Number
Part Marking
Number
Part Marking
CM3003-25SF
CM3003-18SF
8
8
2.5
1.8
CM3003-25SA CM3003-25SA CM3003-25SF
CM3003-18SA CM3003-18SA CM3003-18SF
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
L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 01/15/04
CM3003
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
ESD Protection (HBM)
2000
V
Pin Voltages
IN, OUT, ADJ, EN
[GND - 0.4] to +6.0
-40 to +150
V
Storage Temperature Range
°C
Operating Temperature Range
Ambient
Junction
-40 to +85
-40 to +150
°C
°C
Power Dissipation (See note 1)
Internally Limited
W
Note 1: The SOIC package used is 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 ded-
icated copper area. (Please consult with factory for thermal evaluation assistance)
STANDARD OPERATING CONDITIONS
PARAMETER
VALUE
UNITS
V
2.2 to 5.5
V
IN
Ambient Operating Temperature Range
Load Current
0 to +85
0 to 1500
10 +20%
°C
mA
µF
C
EXT
© 2004 California Micro Devices Corp. All rights reserved.
01/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214 L Fax: 408.263.7846
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www.calmicro.com
3
CM3003
ELECTRICAL OPERATING CHARACTERISTICS (SEE NOTE 1)
SYMBOL PARAMETER
CONDITIONS
0mA < I
MIN
TYP MAX UNITS
V
Regulator Output Voltage
CM3003-25
< 1.5A, V =3.3V, V =0V
OUT
LOAD
IN
ADJ
2.40
1.73
2.50
1.80
2.60
1.87
V
CM3003-18
V
Internal Reference Voltage
Overload Current Limit
Short Circuit Current Limit
Load Regulation
1.15
2.2
1.20
3.0
1.2
5
1.25
3.8
V
A
REF
I
V
> 1.2V
< 0.2V
OUT
LIM
OUT
I
V
0.5
1.8
A
SC
V
V =3.3V, 100mA < I
< 1.5A
mV
mV
R LOAD
IN
LOAD
V
Line Regulation
Dropout Voltage
I
= 5mA; 3.0V < V < to 5.0V
20
R LINE
xx
LOAD
IN
V
I
I
I
= 100mA
= 1.0A
25
45
mV
mV
mV
DROPOUT
LOAD
LOAD
LOAD
250
330
450
670
= 1.5A
I
Ground Current
Regulator Disabled (EN=GND); V =3.3V
5
30
µA
µA
µA
GND
IN
Regulator Enabled (EN=V =3.3V); I
= 0mA
= 1.5A
325
330
500
550
IN
LOAD
LOAD
Regulator Enabled (EN=V =3.3V); I
IN
I
Output Reverse Leakage
V
=3.3V; V = 0V
30
100
µA
ROUT
OUT
IN
T
Shutdown Temperature
Thermal Hysteresis
160
25
°C
°C
DISABLE
T
HYST
Enable Pin Input
V
EN Input Threshold
Voltage
Regulator Enabled
0.4
0.1
0.8
0.1
1.2
5
V
EN_TH
I
Enable Input Leakage
Current
0V < V < 5.5V
µA
EN
EN
Adjust Pin Input (output set by external resistors)
V
ADJ Input Threshold
Voltage
0.2
0.1
0.3
1
V
ADJ_TH
I
ADJ Input Leakage
Current
V
> 1.1V
µA
EN
ADJ
Note 1: Operating Characteristics are over Standard Operating Conditions unless otherwise specified.
© 2004 California Micro Devices Corp. All rights reserved.
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430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 01/15/04
CM3003
Application Information
CM3003-XX
3.3V
VIN
1.5A
VOUT
IN
OUT
ADJ
R1
EN
10µF
100nF
10µF
GND
R2
GND
Figure 1. Application Circuit for Adjustable Output Operation.
Output Voltage = 1.20 (R1+R2) / R2 [VOLTS]
© 2004 California Micro Devices Corp. All rights reserved.
01/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214 L Fax: 408.263.7846
L
www.calmicro.com
5
CM3003
Performance Information
CM3003 Typical DC Characteristics (TA=25°C, EN=VIN=3.3V, CIN=COUT=10uF, unless specified otherwise)
CM3003-25 Device Specfic Data
Output Voltage (10mA Load) with Supply
Output versus Adjust pin (2.5V)
4
3
2
1
0
4.0
3.0
2.0
1.0
0.0
VIN=EN=3.3V
Feedback open
0.0
1.0
2.0
3.0
4.0
5.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
ADJUST PIN VOLTAGE [V]
SUPPLY VOLTAGE [V]
Ground Current with Enable Voltage
Ground Current with Supply (EN = VIN)
400
350
300
250
200
150
100
50
400
350
300
250
200
150
100
50
0
0
0
1
2
3
4
5
0
1
2
ENABLE VOLTAGE [V]
3
SUPPLY VOLTAGE [V]
Ground Current with Output Load
Internal Reference Voltage with Supply
1.23
400
380
360
340
320
300
1.22
1.21
1.20
1.19
1.18
1.17
0.0 0.5 1.0 1.5 2.0 2.5 3.0
LOAD CURRENT [Amps]
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE [V]
© 2004 California Micro Devices Corp. All rights reserved.
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430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 01/15/04
CM3003
Performance Information (cont’d)
CM3003 Typical DC Characteristics (TA=25°C, EN=VIN=3.3V, CIN=COUT=10uF, unless specified otherwise)
CM3003-25 Device Specfic Data
Line Regulation (2.5V, 10mA Load)
Load Regulation
2.60
2.58
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
2.40
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0
0.5
1.0
1.5
2.0
2.5
2.0
5.5
SUPPLY VOLTAGE [V]
LOAD CURRENT [Amps]
Dropout Voltage (0.5A) with Supply
Dropout Voltage with Load
300
250
200
150
100
50
400
350
300
250
200
150
100
50
VIN=3.3V
0.5A Load
(Adjust Mode)
0
0
2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0
SUPPLY VOLTAGE [V]
0.0
0.5
1.0
1.5
LOAD CURRENT [Amps]
Current limit protection
Current limit with input voltage
2.6
2.5
2.4
2.3
2.2
2.1
2.0
4.0
3.0
2.0
1.0
0.0
ADJ = 0V
Vout=2.4V
DROPOUT
Vout=0.1V
Vdd = 3.3V
(Short Circuit)
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT CURRENT [A]
2.5
3.0
3.5
4.0
4.5
5.0
SUPPLY VOLTAGE [V]
© 2004 California Micro Devices Corp. All rights reserved.
01/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214 L Fax: 408.263.7846
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www.calmicro.com
7
CM3003
Performance Information (cont’d)
CM3003 Transient Characteristics (TA=25°C, EN=VIN=3.3V, CIN=COUT=10uF, unless specified otherwise)
CM3003-25 Device Specific Data
Cold Start Power-Up/Down with 10mA Load
Cold Start Power-Up/Down with 1.5A Load
Enable Power-Up with 10mA Load
Enable Power-Up with 1.5A Load
Power Supply Rejection with 25mA Load
Power Supply Rejection with 1.5A Load
60
60
50
40
30
50
40
30
20
10
0
VOUT=2.5V
1.5A Load
20
10
0
VOUT=2.5V
25mA Load
COUT=10uF
COUT=10uF
10
100
1000
10000 100000 1000000
10
100
1000 10000 100000 1000000
FREQUENCY [Hz]
FREQUENCY [Hz]
© 2004 California Micro Devices Corp. All rights reserved.
8
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 01/15/04
CM3003
Performance Information (cont’d)
CM3003 Transient Characteristics (TA=25°C, EN=VIN=3.3V, CIN=COUT=10uF, unless specified otherwise)
CM3003-25 Device Specific Data
Line Transient Response with 25mA Load
Line Transient Response with 1.5A Load
Load Transient Response (25mA to 1A)
Load Transient Response (100mA to 1.5A)
© 2004 California Micro Devices Corp. All rights reserved.
01/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214 L Fax: 408.263.7846
L
www.calmicro.com
9
CM3003
Performance Information (cont’d)
CM3003 Typical Thermal Characteristics
The overall junction to ambient thermal resistance
(θJA) for device power dissipation (PD) consists prima-
rily of two paths in series. The first path is the junction
to the case (θJC) which is defined by the package style,
Internal Reference Voltage over Temperature
1.22
1.21
1.20
1.19
1.18
1.17
and the second path is case to ambient (θCA) thermal
resistance which is dependent on board layout. The
final operating junction temperature for any set of con-
ditions can be estimated by the following thermal equa-
tion:
T
= T
+ P (θJC) + P (θCA
)
JUNC
AMB
D
D
= T
+ P (θJA)
AMB
D
0
25
50
75 100 125 150
TEMPERATURE [oC]
The CM3003 uses a thermally enhanced package
where all the GND pins (5 through 8) are integral to the
leadframe. When this package is mounted on a double
sided printed circuit board with two square inches of
copper allocated for "heat spreading", the resulting θJA
Output Voltage (2.5V) over Temperature
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
is about 50°C/W.
Based on a typical operating power dissipation of 1.0W
(3.0V-2.5Vx 2.0A) with an ambient of 70°C, the result-
ing junction temperature will be:
T
= T
+ P (θJA)
JUNC
AMB
D
= 70°C + 1.0W X (50°C/W)
= 70°C + 50°C = 120°C
5mA Load
0
25
50
75 100 125 150
Thermal characteristics were measured using a double
sided board with two square inches of copper area
connected to the GND pin for "heat spreading".
TEMPERATURE [ oC]
Ground Current over Temperature
Measurements showing performance up to junction
temperature of 125°C were performed under light load
conditions (5mA). This allows the ambient temperature
to be representative of the internal junction tempera-
ture.
350
340
330
320
310
300
Note: The use of multi-layer board construction with
separate ground and power planes will further enhance
the overall thermal performance. 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 CM3003 with an overall
θJA of 70°C/W which allows up to 800mW to be safely
0
25
50 75 100 125 150
TEMPERATURE [oC]
dissipated for the maximum junction temperature.
© 2004 California Micro Devices Corp. All rights reserved.
10
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 01/15/04
CM3003
Mechanical Details
SOIC-8 Mechanical Specifications
Mechanical Package Diagrams
Dimensions for CM3003 devices packaged in 8-pin
SOIC packages are presented below.
TOP VIEW
For complete information on the SOIC-8 package, see
the California Micro Devices SOIC Package Informa-
tion document.
D
8
7
6
5
PACKAGE DIMENSIONS
E
H
Pin 1
Marking
Package
Pins
SOIC
8
Millimeters
Inches
Dimensions
1
2
3
4
Min
Max
1.75
0.25
Min
Max
0.069
0.010
A
1.35
0.10
0.053
0.004
A
1
SIDE VIEW
B
0.33
0.19
4.80
3.80
0.51
0.25
5.00
4.19
0.013
0.007
0.189
0.150
0.020
0.010
0.197
0.165
C
A
D
SEATING
PLANE
A1
B
E
e
e
1.27 BSC
0.050 BSC
H
L
5.80
0.40
6.20
1.27
0.228
0.016
0.244
0.050
END VIEW
# per tube
100 pieces*
2500 pieces
C
# per tape
and reel
Controlling dimension: inches
L
* This is an approximate number which may vary.
Package Dimensions for SOIC-8
© 2004 California Micro Devices Corp. All rights reserved.
01/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L
Tel: 408.263.3214 L Fax: 408.263.7846
L
www.calmicro.com
11
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