PRELIMINARY
CM3015
Micropower, 300mA Low Dropout CMOS Regulator
Features
•
•
•
•
•
•
•
•
•
•
300mA output current capability
•300mA peak in SOT-23 package
•300mA continuous in MSOP package
300mV maximum dropout voltage at full load
Excellent line and load regulation
Stable with any output capacitor
Ultra low noise with optional bypass capacitor
Fast power-up with bypass capacitor
"Zero" current in Shutdown mode
Thermal overload protection
Foldback current limiting protection
Reverse current protection
Product Description
The CM3015 is a CMOS linear voltage regulator with
low quiescent current, very low dropout voltage and
better than 1% fixed output voltage accuracy. The
CM3015 ground current is typically 150µA at light loads
and only 165µA at 300mA.
Load regulation of 0.25% is maintained for peak cur-
rents up to 300mA. This is useful for supplying in-rush
currents during power-up and transient conditions. The
continuous output current is determined by power dis-
sipation, package type and board layout.
A dedicated control input (EN, Active High) has been
included for power-up sequencing flexibility. When this
input is taken low, the regulator is disabled and the
supply current will drop to near zero.
The CM3015 also features reverse current protection.
This protects the device by blocking the pass transis-
tor’s parasitic diode when the output voltage is forced
higher than the input. The device also incorporates
overload current limiting and high temperature thermal
shutdown protection.
For low noise performance and increased power sup-
ply ripple rejection, a bypass capacitor can be con-
nected to the BYP pin. Connecting this capacitor will
not significantly delay the speed of power-up.
To reduce board cost and layout size the CM3015 was
designed to be stable with or without any output capac-
itor. This includes tiny, low ESR ceramic capacitors.
The CM3015 is available in a low profile, 8-lead MSOP
package and 5 and 6-lead SOT23 packages making it
ideal for space critical applications.
Applications
•
•
•
•
Notebook and palmtop computers
Cell phones and battery powered devices
Consumer and personal electronics
PC Card V
CC
and V
PP
regulation and switching
CM3015 Regulator Family
PRODUCT
CM3015-00
CM3015-12
CM3015-15
CM3015-18
CM3015-25
CM3015-28
CM3015-30
CM3015-33
OUTPUT VOLTAGE*
Adjustable
1.2V
1.5V
1.8V
2.5V
2.8V
3.0V
3.3V
* For other output voltages, please consult factory.
Block Diagram
IN
Reverse
Current
Protection
OUT
V
REF
Current
Limit
+
AMP
BYP
Fast
Power-Up
EN
-
EN
R
1
VSENSE*
Enable
Control
Thermal
Overload
Active
Pulldown
R
2
GND
* Adjustable output version only
©
2004 California Micro Devices Corp. All rights reserved.
09/14/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
1
PRELIMINARY
CM3015
PACKAGE / PINOUT DIAGRAM
(Note 1)
TOP VIEW
V
IN
GND
EN
1
5
TOP VIEW
V
OUT
V
IN
GND
BYP EN
1
6
TOP VIEW
V
OUT
SENSE
BYP
EN
VIN
VOUT
BYP
1
8
GND
GND
GND
EN
VIN
VOUT
TOP VIEW
1
8
GND
GND
GND
GND
CCnn
2
4
CM30
1500
CM30
15nn
2
CC00
2
2
5
2
3
4
7
6
5
2
3
4
7
6
5
3
3
4
GND VSENSE
5-PIN SOT23
CM3015-12ST,-15ST,
-18ST,-25ST,-30ST,-33ST
6-PIN SOT23
CM3015-00ST
8-PIN MSOP
CM3015-12MA,-15MA,
-18MA,-25MA,-30MA,-33MA
8-PIN MSOP
CM3015-00MA
Notes:
1) These drawings are not to scale.
2) See Ordering Information section for part marking details.
PIN DESCRIPTIONS
SOT23-5
PIN(S)
1
SOT23-6
PIN(S)
1
MSOP-8
PIN(S)
2
NAME
V
IN
DESCRIPTION
V
IN
is the input power source for the regulator. If this input is within a few
inches of the main supply filter, a capacitor may not be necessary. Other-
wise, an input filter capacitor of about 1-10µF will ensure adequate filter-
ing.
The negative reference for all voltages.
Enable input. When this input is taken low (< 0.4V), the regulator is dis-
abled. In this state, the supply current will drop to near zero.
Reference Bypass Pin. Connect to an external capacitor for noise reduc-
tion. A 10nF-100nF size ceramic capacitor is recommended.
This pin sets V
OUT
with an external divider: V
OUT
= VSENSE(1+ R
1
/R
2
).
R1 is the upper resistor, like the internal divider shown on the block dia-
gram on page 1.
V
OUT
is the output voltage used to power the load. An output capacitor
may not be required for stability, but its use can improve transient
response, noise performance and power supply ripple rejection for fre-
quencies over ~100kHz (see note 1).
2
3
4
2
3
4
5
5-8
1
4
4
GND
EN
BYP
VSENSE
−
5
6
3
V
OUT
Note 1: Tantalum, electrolytic or low cost ceramic capacitors may be used.
©
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
09/14/04
PRELIMINARY
CM3015
Ordering Information
PART NUMBERING INFORMATION
Pins
6
5
5
5
5
5
5
5
8
8
8
8
8
8
8
8
Package
SOT23-6
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
MSOP-8
Ordering Part Number
1
CM3015-00ST
CM3015-12ST
CM3015-15ST
CM3015-18ST
CM3015-25ST
CM3015-28ST
CM3015-30ST
CM3015-33ST
CM3015-00MA
CM3015-12MA
CM3015-15MA
CM3015-18MA
CM3015-25MA
CM3015-28MA
CM3015-30MA
CM3015-33MA
Part Marking
CC00
CC12
CC15
CC18
CC25
CC28
CC30
CC33
CM301500
CM301512
CM301515
CM301518
CM301525
CM301528
CM301530
CM301533
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
ESD Protection (HBM)
Pin Voltages
V
IN
EN
V
OUT
Storage Temperature Range
Operating Temperature Range, Junction
Power Dissipation (Notes 1,2)
RATING
+2000
[GND - 0.6] to [+6.0]
[GND - 0.6] to [V
CC
+ 0.6]
[GND - 0.6] to [V
CC
+ 0.6]
-40 to +150
0 to +150
Internally Limited
UNITS
V
V
V
V
°C
°C
W
STANDARD OPERATING CONDITIONS
PARAMETER
V
IN
Ambient Operating Temperature Range
Load Current
C
EXT
(notes 1 and 2)
RATING
2.2 to 6.0
-40 to +85
0 to 300
0 to 50
UNITS
V
°C
mA
µF
Note 1: Tantalum, electrolytic or low cost ceramic capacitors may be used.
Note 2: V
OUT
+ 1V < V
IN
& 2.5V < V
IN
< 6V, I
OUT
= 1mA, C
IN
= 2.2µF, T
J
= 25
°
C, C
OUT
= 2.2µF, V
SD
= 1.5V, unless specified other-
wise.
Bold values indicate -40
°
C < T
J
< 125
°
C
©
2004 California Micro Devices Corp. All rights reserved.
09/14/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
3
PRELIMINARY
CM3015
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS
SYMBOL
V
OUT
PARAMETER
Regulator Output Voltage
CONDITIONS
T
A
= 25°C
0°C<T
J
<125°C
-40°C<T
J
<125°C
VOUT + 1V < VIN & 2.5V < VIN < 6V
0mA
≤
I
OUT
≤
150mA; V
IN
= V
OUT
+ 1V;
Note 2
T
A
= 25°C
1mA
≤
I
LOAD
≤
300mA;
V
IN
= V
OUT
(nominal) -100mV
with EN tied to V
IN
; I
LOAD
= 1mA
with EN tied to V
IN
; I
LOAD
= 350mA
with EN tied to GND (Disable Mode)
V
EN
V
DIS
I
EN
PSSR
E
NOISE
t
ON
I
LIM
I
SC
T
JSD
T
HYST
Enable Voltage
Disable Voltage
Enable Input Current
Power Supply Ripple Rejection
Output Noise Voltage
V
OUT
Turn-on Time
Overload Current Limit
Short Circuit Current Limit
Thermal Shutdown Junction
Temperature
Thermal Hysteresis
V
OUT
< 0.5V
f=1kHz
10Hz-100kHz; C
BYP
= 0.1µF
C
BYP
= 0µF
C
BYP
= 0.1µF
Regulator enabled
Regulator shutdown
0.01
75
30
80
100
800
550
165
20
1.5
0.40
0.18
(SEE NOTE 1)
MIN
-1
-2
-3
TYP
MAX
+1
+2
+3
UNIT
S
%
%
%
%/V
%
V
V
R LINE
V
R LOAD
V
SENSE
R
DROP
I
GND
Line Regulation
Load Regulation
Reference Voltage
Dropout Resistance
Ground Current
0.1
0.1
1.20
0.7
150
165
0.01
0.2
0.4
0.25
0.50
1.0
1.2
200
250
1
Ω
µA
µA
µA
V
V
µA
dB
µVrms
µs
µs
mA
mA
°C
°C
Note 1: V
OUT
+ 1V < V
IN
& 2.5V < V
IN
< 6V, I
OUT
= 1mA, C
IN
= 2.2µF, T
J
= 25
°
C, C
OUT
= 2.2µF, V
SD
= 1.5V, unless specified other-
wise.
Bold values indicate -40
°
C < T
J
< 125
°
C
Note 2: Regulation voltages and dropout resistance measured at constant junction temperature using low duty cycle pulse testing.
Note 3: Line regulation is displayed as the average regulation across the full operating range measured in %/V.
THERMAL PERFORMANCE
PACKAGE
SOT23-5 / SOT23-6
MSOP-8 Fused
θ
JA
MINIMUM FOOTPRINT
220°C/W
160°C/W
θ
JA
1" SQUARE 2OZ. COPPER
170°C/W
70°C/W
©
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
09/14/04
PRELIMINARY
CM3015
Performance Information
Typical DC Characteristics (nominal conditions unless specified otherwise)
Nominal Conditions: C
IN
= 1µF, C
OUT
= 2.2µF, No C
BYP
, V
IN
= 4.0V, Load = 5mA (all plots measured with 3.0V
V
OUT
)
g
3.00
3.10
OUTPUT VOLTAGE [V]
OUTPUT VOLTAGE [V]
0
100
200
300
400
500
2.98
2.96
2.94
2.92
2.90
2.88
2.86
3
3.5
4
4.5
5
5.5
6
3.05
3.00
2.95
2.90
CURRENT LOAD [mA]
INPUT VOLTAGE [V]
Figure 1. Load Regulation
Figure 4. Line Regulation (I
LOAD
=300mA)
3.04
3.02
0.8
DROPOUT VOLTAGE [V]
0.7
OUTPUT VOLTAGE [V]
0
100
200
300
400
500
0.6
0.5
0.4
0.3
0.2
0.1
0
3
2.98
2.96
2.94
2.92
2.9
3
3.5
4
4.5
5
5.5
6
LOAD [mA]
INPUT VOLTAGE [V]
Figure 2. Dropout Voltage (V
OUT
=2.9V)
Figure 5. Line Regulation (I
LOAD
=5mA)
4.0
OUTPUT VOLTAGE [V]
OUTPUT VOLTAGE [V]
4.0
3.5
3.0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
1
INPUT VOLTAGE [V]
1mA Load
2.0
1.0
0.0
0 100 200 300 400 500 600 700 800 900
LOAD CURRENT [mA]
2
3
4
5
6
Figure 3. Foldback Current Limiting
©
2004 California Micro Devices Corp. All rights reserved.
09/14/04
Figure 6. Line Regulation (I
LOAD
=1mA)
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
5
模拟与混合信号
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
