CM3004-25SF [CALMIRCO]
1.0 Amp Dual Mode Low-Dropout CMOS Regulator; 1.0安培双模式低压降CMOS稳压器
| 型号： | CM3004-25SF |
| 厂家： | 
CALIFORNIA MICRO DEVICES CORP |
| 描述： | 1.0 Amp Dual Mode Low-Dropout CMOS Regulator |
| 文件： | 总9页 (文件大小：210K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY
CM3004
1.0 Amp Dual Mode Low-Dropout CMOS Regulator
Features
Product Description
•
•
•
•
•
•
•
•
•
•
•
Internally fixed or adjustable output modes
The CM3004 is a very-low-dropout regulator that offers
both fixed output and fixed/adjustable operating
modes. When the Adjust control pin (ADJ) is grounded,
this device automatically enters a fixed voltage mode
delivering 2.5V out at 1.0A. When the Adjust pin is con-
nected to an external resistor network the device auto-
matically operates as an adjustable regulator. The
Adjust pin can also be tied directly to the OUT pin
which configures the CM3004 as a 1.2V regulator.
250mV dropout at 1.0A load current
Operates from 1.7V to 5.5V input supply
Low Ground current (330µA at 1.0A Load)
Minimal output capacitance required
Stable with low ESR ceramic output capacitors
Current limit protection
Thermal overload protection
Reverse current protection in shutdown
Thermally enhanced 8-lead SOIC package
Lead-free version available
An Enable control pin (EN) allows the device to be
placed in a low-current mode.
The CM3004 is fully protected, offering both overload
current limiting, short-circuit protection and high-tem-
perature thermal shutdown. The CM3004 also includes
protection against output to input current flow while in
shutdown.
Applications
•
•
•
•
•
•
•
•
Low-voltage "Core" processors
Set top boxes
DVD players
Personal video recorders
Graphics Cards
Gigabit NIC Cards
PC Motherboards
Notebooks
The CM3004 is supplied in a space-saving, 8-lead
power SOIC package which has been thermally
enhanced via an integral leadframe to ensure maxi-
mum junction-to-ambient power dissipation. The
CM3004 is also available with optional lead-free finish-
ing.
Typical Application Circuits
Simplified Electrical Schematic
CM3004
3.3V
2.5V/1.0A
VOUT
VIN
IN
OUT
ADJ
1.7V-5.5V
IN
EN
Controller
10µF
100nF
10µF
GND
Over Current
Short Circuit
EN
Over Temp
EN
GND
VIN
+
1.2V Reference
Voltage
-
CM3004
1.0 AMP
2.5V Output when ADJ = GND
OUT
Fixed
1.8V
10
1.2V/1.0A
Automatically selects Adjustable Output
(when external resistors are present)
VOUT
IN
OUT
ADJ
ADJ
Adj
EN
GND
10µF
100nF
µF
GND
GND
© 2004 California Micro Devices Corp. All rights reserved.
01/10/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
1
PRELIMINARY
CM3004
PACKAGE / PINOUT DIAGRAM
TOP VIEW
1
2
3
4
8
7
6
5
GND
GND
GND
GND
EN
IN
OUT
ADJ
8-Lead Power SOIC
Note: This drawing is not to scale.
PIN DESCRIPTIONS
LEAD(S)
NAME
DESCRIPTION
1
EN
Enable/shutdown input. When EN is asserted high (VEN ≥ 1.2V), the regulator is enabled. When 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 CM3004 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
Number1
Ordering Part
Number1
Leads
Package
Part Marking
Part Marking
8
SOIC-8
CM3004-25SA
CM3004 25SA
CM3004-25SF
CM3004 25SF
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
01/10/05
PRELIMINARY
CM3004
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
Junction
-40 to +150
°C
W
Power Dissipation (See note 1)
Internally Limited
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
VIN
1.7 to 5.5
V
Ambient Operating Temperature Range
-40 to +85
0 to 1000
10 ± 20%
°C
mA
µF
Load Current
CEXT
© 2005 California Micro Devices Corp. All rights reserved.
01/10/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
3
PRELIMINARY
CM3004
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS (SEE NOTE 1)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
VOUT
Regulator Output Voltage
0mA < ILOAD < 1.0A, VIN=3.3V, VADJ=0V
2.40
2.50
1.20
3.0
1.2
5
2.60
1.25
3.8
1.8
20
V
V
0mA < ILOAD < 1.0A, VIN=1.8V, VADJ=VOUT
VIN=3.3V,VOUT = 2.5V
1.15
2.2
ILIM
ISC
Overload Current Limit
Short Circuit Current Limit
Load Regulation
A
VOUT < 0.2V
0.5
A
VR LOAD
VIN=3.3V,VOUT = 2.5V, 100mA < ILOAD < 1.0A
VIN=1.8V,VOUT = 1.2V, 100mA < ILOAD < 1.0A
3.0V < VIN < to 5.0V, VOUT = 2.5V, ILOAD = 5mA
1.7V < VIN < to 3.5V, VOUT = 1.2V, ILOAD = 5mA
mV
mV
mV
mV
5
20
VR LINE
Line Regulation xx
5
20
5
20
VDROPOUT Dropout Voltage
ILOAD = 100mA
ILOAD = 1.0A
25
45
mV
mV
250
450
IGND
Ground Current
EN tied to GND, VIN=3.3V
EN=VIN=3.3V, VOUT = 2.5V, ILOAD= 0mA
EN=VIN=3.3V, VOUT = 2.5V, ILOAD= 1.0A
5
30
µA
µA
µA
325
330
500
550
IROUT
Output Reverse Leakage
VOUT=3.3V; VIN = 0V
30
100
µA
TDISABLE Shutdown Temperature
THYST
160
25
°C
°C
Thermal Hysteresis
Enable Pin Input
VEN_TH EN Input Threshold
Regulator Enabled
0V < VEN < 5.5V
0.4
0.1
0.8
0.1
1.2
5
V
Voltage
IEN
Enable Input Leakage
Current
µA
Adjust Pin Input (output set by external resistors)
VADJ_TH
ADJ Input Threshold
Voltage
0.2
0.1
0.3
1
V
IADJ
ADJ Input Leakage
Current
VADJ > 1.1V
µA
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
01/10/05
PRELIMINARY
CM3004
Performance Information
Typical DC Characteristics nominal conditions unless specified otherwise)
Nominal Conditions: C = 10µF, C
= 10µF
IN
OUT
1.25
1.20
1.15
2.6
2.55
2.5
2.45
2.4
1.7
1.8
2.0
2.5
3.0
3.3
3.5
3.0
4.0
Input Voltage (V)
5.0
Input Voltage (V)
Figure 1. Line Regulation, (I
=5mA)
Figure 4. Line Regulation, (I
=5mA)
LOAD
LOAD
2.6
1.2
2.55
2.5
1.25
2.45
2.4
1.15
0
0.5
Load Current (A)
1.0
0.0
0.5
Load Current (A)
1.0
Figure 2. Load Regulation (V = 1.8V)
Figure 5. Load Regulation (V = 3.3V)
IN
IN
1.4
1.2
1
3
2.5
2
0.8
0.6
0.4
0.2
0
1.5
1
0.5
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Input Voltage (V)
Figure 3. Operating Voltage Range (V
= 1.2V)
Figure 6. Operating Voltage Range (V
= 2.5V)
OUT
OUT
© 2005 California Micro Devices Corp. All rights reserved.
01/10/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
5
PRELIMINARY
CM3004
Performance Information (cont’d)
Typical Transient Characteristics (nominal conditions unless specified otherwise)
Nominal Conditions: C = 10µF, C
= 10µF
IN
OUT
1.0A
1.0A
IOUT
IOUT
10mA
10mA
VOUT
VOUT
VIN=1.8V, VOUT=1.2V
VIN=3.3V, VOUT=2.5V
C
C
IN=10µF ceramic,
OUT=10µF ceramic
C
C
IN=10µF ceramic,
OUT=10µF ceramic
Figure 7. Load Transient Step Response
Figure 10. Load Transient Step Response
IOUT=10mA,
IOUT=10mA,
EN=1.8V=VIN
EN=3.3V=VIN
C
IN=10µF cer.,
C
IN=10µF cer.,
COUT=10µF cer.
COUT=10µF cer.
EN=0V
EN=0V
VOUT=2.5V
VOUT=1.2V
VOUT=0V
VOUT=0V
Figure 8. Enable/Disable Response
Figure 11. Enable/Disable Response
IOUT=1.0A,
IOUT=1.0A,
EN=1.8V=VIN
EN=3.3V=VIN
C
IN=10µF cer.,
C
IN=10µF cer.,
COUT=10µF cer.
COUT=10µF cer.
EN=0V
EN=0V
VOUT=2.5V
VOUT=1.2V
V
OUT=0V
VOUT=0V
Figure 9. Enable/Disable Response
Figure 12. Enable/Disable Response
© 2004 California Micro Devices Corp. All rights reserved.
6
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
01/10/05
PRELIMINARY
CM3004
Performance Information (cont’d)
CM3004 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
Temperature vs. Output Voltage (1.2V)
1.25
style, and the second path is case to ambient (θCA
)
1.23
1.21
1.19
1.17
1.15
thermal resistance which is dependent on board lay-
out. The final operating junction temperature for any
set of conditions can be estimated by the following
thermal equation:
T
= T
= T
+ P (θJC) + P (θCA
)
JUNC
AMB
D
D
+ P (θJA)
AMB
D
The CM3004 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
-40
25
Temperature ('C)
85
is about 50°C/W.
Temperature vs. Output Voltage ( 2.5V )
Based on a typical operating power dissipation of 1.0W
with an ambient of 85°C, the resulting junction temper-
ature will be:
2.60
2.55
2.50
2.45
2.40
T
= T
+ P (θJA)
JUNC
AMB
D
= 85°C + 1.0W (50°C/W)
= 85°C + 50°C = 135°C
Thermal characteristics were measured using a double
sided board with two square inches of copper area
connected to the GND pins for "heat spreading". Mea-
surement was performed under light load conditions
(5mA).
-40 -25
0
25
50
75
85
100 125 150
Temperature ('C)
© 2005 California Micro Devices Corp. All rights reserved.
01/10/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
7
PRELIMINARY
CM3004
Application Information
CM3004
3.3V
1.0A
V
V
IN
EN
OUT
OUT
IN
R1
ADJ
10µF
100nF
10µF
GND
R2
GND
Figure 13. Application Circuit for Adjustable Output Operation.
Output Voltage = 1.20 (R1+R2) / R2 [VOLTS]
© 2004 California Micro Devices Corp. All rights reserved.
8
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
01/10/05
PRELIMINARY
CM3004
Mechanical Details
SOIC-8 Mechanical Specifications
Mechanical Package Diagrams
Dimensions for the CM3004 supplied in an 8-lead
SOIC package 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
Lead
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
A1
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
A
1
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
© 2005 California Micro Devices Corp. All rights reserved.
01/10/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
9
相关型号：
©2020 ICPDF网 联系我们和版权申明