CALIFORNIA MICRO DEVICES
Features
Product Description
Preliminary
CM3019
Micropower, 500mA Low Noise CMOS LDO Regulator
•
500mA output current capability
•
500mA peak in SOT-23 package
•
500mA continuous in MSOP package
•
500mV 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
The CM3019 is a CMOS linear voltage regulator with low
quiescent current, very low drop out voltage and better
than 1% initial output voltage accuracy.
The quiescent current is typically 150µA at light loads and
only 165µA at 500mA. This is 5% more efficient than
equivalent Bi-CMOS devices that can waste up to 25mA at
500mA.
Load regulation is maintained for peak currents up to
500mA. This is useful for supplying inrush currents during
power-up and transient conditions. Continuous output
current is limited by 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. In this state,
the supply current will drop to near zero.
The device also features reverse current protection. This
protects the device by blocking the pass transistors
parasitic diode when the output voltage is forced higher
than the input.
For low noise performance and increased power supply
ripple rejection a noise bypass capacitor can be connected
to the BYP pin. Connecting this capacitor will not
significantly delay the speed of power-up.
The CM3019 is fully protected, offering both overload
current limiting and high temperature thermal shutdown.
To reduce board cost and layout size the CM3019 was
designed to be stable with or without any output capacitor.
This includes tiny, low ESR ceramic capacitors.
Housed in a low profile MSOP8 package, or a SOT23-
5/SOT23-6, the device is ideal for space critical
applications.
Applications
•
•
•
•
Notebook, and palmtop computers
Cell phones and battery powered devices
Consumer and personal electronics
PC Card Vcc and Vpp regulation and switching
Table 1: CM3019 Regulator Family
Product
Output Voltage
CM3019-00
Adjustable
CM3019-12
1.2V
CM3019-15
1.5V
CM3019-18
1.8V
CM3019-25
2.5V
CM3019-28
2.8V
CM3019-30
3.0V
CM3019-33
3.3V
For other output voltages, please contact the factory
Typical Application Circuit
Block Diagram
© 2004 California Micro Devices Corp. All rights reserved
02/20/04
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
1
CALIFORNIA MICRO DEVICES
PACKAGE / PINOUT DIAGRAM
Preliminary
CM3019
PIN DESCRIPTIONS
SOT-23-5
Pin
1
MSOP
8 Pin
1
Symbol
IN
Description
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. Otherwise an input filter
capacitor of about 1-10uF will ensure adequate filtering.
Ground is the negative reference for all voltages
When this input is taken low (< 0.4V), the regulator is disabled. In this state, the supply
current will drop to near zero.
Reference Bypass Pin. Connect to an external capacitor for noise reduction. A 10nF-
100nF size ceramic capacitor is recommended.
Out is the regulator output voltage used to power the load. No output capacitor is
required for stability. Output capacitance can be added to improve transient
response, noise performance and power supply ripple rejection for frequencies over
~100kHz.
2
3
4
5
5-8
1
4
3
GND
EN
BYP
OUT
Note1: Tantalum, electrolytic or low cost ceramic capacitors may be used.
STANDARD PART ORDERING INFORMATION
Package
Pins
6
5
5
5
5
5
5
5
8
8
8
8
8
8
8
8
Ordering Information
Style
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
MSOP
MSOP
MSOP
MSOP
MSOP
MSOP
MSOP
MSOP
Tape & Reel
CM3019-00ST
CM3019-12ST
CM3019-15ST
CM3019-18ST
CM3019-25ST
CM3019-28ST
CM3019-30ST
CM3019-33ST
CM3019-00MA
CM3019-12MA
CM3019-15MA
CM3019-18MA
CM3019-25MA
CM3019-28MA
CM3019-30MA
CM3019-33MA
Part Marking
CB00
CB12
CB15
CB18
CB25
CB28
CB30
CB33
CM30/1900
CM30/1912
CM30/1915
CM30/1918
CM30/1925
CM30/1928
CM30/1930
CM30/1933
© 2004 California Micro Devices Corp. All rights reserved
02/20/04
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
2
CALIFORNIA MICRO DEVICES
Specifications
Parameter
Absolute Maximum Ratings
Rating
+ 6.0, Gnd - 0.6
V
CC
+ 0.6, Gnd - 0.6
- 40 to +150
-40 to +85
0 to +150
Internally limited
Unit
V
V
°C
Parameter
Preliminary
CM3019
Operating Conditions
Range
2.2 to 6.0
-40 to +85
0 to 500
0-50
V
IN
Voltage
EN, V
OUT
Voltages
Temperature: Storage
Operating Ambient
Operating Junction
Power Dissipation
V
IN
Temperature (Ambient)
Load Current
note2
C
OUT
Uni
t
V
°C
mA
µF
W
Electrical Operating Characteristics
V
OUT
+1V< V
IN
& 2.5V< V
IN
< 6V, I
OUT
=1mA, C
IN
=2.2uF, T
J
=25 C, C
OUT
=2.2
µ
F, V
SD
=1.5V, unless specified otherwise.
o
o
bold
values indicate -40 C<T
J
<125 C
o
Symbol
V
OUT
Parameter
Output Voltage Accuracy
Line Regulation
Note4
Load Regulation
Dropout Resistance
Ground Current
Conditions
T
A
= 25 C
o
o
0 C<T
J
<125 C
o
o
-40 C<T
J
<125 C
V
OUT
+1V< V
IN
& 2.5V< V
IN
< 6V
I
OUT
=1mA to 500mA
V
IN
=V
OUT
+1V
I
OUT
=1mA to 500mA
V
IN
=V
OUT
(nominal)-100mV
EN tied to V
CC
, I
LOAD
= 1mA
EN tied to V
CC
, I
LOAD
= 500mA
EN tied to GND, (Disable Mode)
Note3
o
MIN
-1
-2
-3
TYP
VR LINE
VR LOAD
R
DROP
I
GND
0.1
0.1
0.7
150
165
0.01
1.5
MAX
1
2
3
0.2
0.4
0.25
0.5
1
1.2
200
200
1
0.4
0.18
UNIT
%
%
%
%/V
%
Ω
µA
µA
µA
V
V
µA
dB
µVrm
s
µs
µs
mA
mA
°C
°C
V
EN
V
DIS
I
EN
PSRR
e
N
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
Thermal Shutdown Junction
Temperature
Thermal Hysteresis
Regulator enabled
Regulator shutdown
0.01
f=1kHz
C
BYP
=0.1uF, BW=10Hz to 100kHz
C
BYP
=0uF
C
BYP
=0.1uF
V
OUT
< 0.5V
75
30
80
100
800
550
165
20
Note 2: Tantalum, electrolytic or low cost ceramic capacitors may be used.
Note 3: Regulation voltages and dropout resistance is measured at constant junction temperature using low duty cycle pulse testing.
Note 4: Line regulation is displayed as the average regulation across the full operating range measured in %/V.
Package
SOT23-5/SOT23-6
MSOP8 Fused
© 2004 California Micro Devices Corp. All rights reserved
Thermal Performance
θ
JA
Minimum Footprint
θ
JA
1” square 2oz copper
O
220 C/W
170
O
C/W
160
O
C/W
70
O
C/W
02/20/04
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
3
CALIFORNIA MICRO DEVICES
Preliminary
CM3019
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
)
Load Regulation
3.10
OUTPUT VOLTAGE [V]
Dropout Voltage (V
OUT
=2.9V)
800
700
OUTPUT VOLTAGE [V]
Foldback Current Limiting
4.0
3.05
600
DROPOUT [V]
500
400
300
200
100
3.0
3.00
2.0
2.95
1.0
2.90
0
100
200
300
400
500
600
700
LOAD CURRENT [m A]
0
0
200
400
LOAD [mA]
600
0.0
0 100 200 300 400 500 600 700 800 900
LOAD CURRENT [mA]
Line Regulation
3.10
Line Regulation
4.0
OOUTPUT VOLTAGE [V]
Enable Voltage Threshold
1000
900
800
700
600
500
OUTPUT VOLTAGE [V]
3.05
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
1
2
3
4
5
6
2
3
4
5
6
SUPPLY VOLTAGE [V]
7
1mA Load
3.00
2.95
2.90
2.85
2.80
2.8
3.2
3.6 4.0 4.4 4.8 5.2
INPUT VOLTAGE [V
]
5.6
6.0
1mA Load
500mA Load
INPUT VOLTAGE [V]
Supply Current vs. Voltage (EN = V
IN
)
200
180
160
140
120
100
80
60
40
20
0
0
En = Vin
GROUND CURRENT [uA]
Ground Current vs. Output Load
OUTPUT SUPPLY CURRENT [nA]
THRESHOLD [mV]
Output Supply Current vs. Voltage
2500
2000
1500
1000
Vin = 0V, EN = 0V
500
0
0
1
2
3
4
5
6
OUTPUT SUPPLY VOLTAGE [V]
200
GROUND CURRENT [uA]
175
150
1mA Load
125
100
1
2
3
4
5
6
0
100 200 300 400 500 600 700 800
LOAD CURRENT [mA]
INPUT VOLTAGE [V]
© 2004 California Micro Devices Corp. All rights reserved
02/20/04
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
4
CALIFORNIA MICRO DEVICES
Input Supply Current vs. Voltage
2500
INPUT SUPPLY CURRENT [nA]
Preliminary
CM3019
Output Supply Current vs. Voltage
10000
Clamp to GND
Input Supply Current vs. Voltage
2500
INPUT SUPPLY CURRENT [nA]
2000
1500
1000
Vout = 0V, EN = 0V
500
0
0
1
2
3
4
5
6
INPUT SUPPLY VOLTAGE [V]
2000
1500
1000
500
0
0
Vout = 3V, EN = 0V
OUTPUT SUPPLY CURRENT [uA]
1000
100
10
1
Protect
0
0
1
2
3
4
5
6
OUTPUT SUPPLY VOLTAGE [V]
Vin = 3V,
EN = 0V
1
2
3
4
5
6
INPUT SUPPLY VOLTAGE [V]
Transient 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
)
10% to 90% Load Step (t
r
=1
µ
s)
10% to 90% Load Step (t
r
=1
µ
s)
10% to 90% Load Step (t
r
=1
µ
s)
3.5V – 4.5V Line Step (t
r
=1
µ
s)
3.5V – 4.5V Line Step (t
r
=1
µ
s)
3.5V – 4.5V Line Step (t
r
=1
µ
s)
Enable Response
Enable Response
Disable Response
© 2004 California Micro Devices Corp. All rights reserved
02/20/04
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
5
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