CALMIRCO CM3019-25ST Micropower, 500ma low noise cmos ldo regulator Datasheet

Preliminary
CM3019
CALIFORNIA MICRO DEVICES
Micropower, 500mA Low Noise CMOS LDO Regulator
Features
Product Description
• 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.
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
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 SOT235/SOT23-6, the device is ideal for space critical
applications.
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
Preliminary
CM3019
CALIFORNIA MICRO DEVICES
PACKAGE / PINOUT DIAGRAM
PIN DESCRIPTIONS
SOT-23-5
Pin
1
MSOP
8 Pin
1
Symbol
2
3
5-8
1
GND
EN
4
4
BYP
5
3
OUT
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 10nF100nF 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.
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
Tape & Reel
SOT-23
CM3019-00ST
Part Marking
CB00
SOT-23
CM3019-12ST
CB12
SOT-23
CM3019-15ST
CB15
SOT-23
CM3019-18ST
CB18
SOT-23
CM3019-25ST
CB25
SOT-23
CM3019-28ST
CB28
SOT-23
CM3019-30ST
CB30
SOT-23
CM3019-33ST
CB33
MSOP
CM3019-00MA
CM30/1900
MSOP
CM3019-12MA
CM30/1912
MSOP
CM3019-15MA
CM30/1915
MSOP
CM3019-18MA
CM30/1918
MSOP
CM3019-25MA
CM30/1925
MSOP
CM3019-28MA
CM30/1928
MSOP
CM3019-30MA
CM30/1930
MSOP
CM3019-33MA
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
Preliminary
CM3019
CALIFORNIA MICRO DEVICES
Specifications
Parameter
Absolute Maximum Ratings
Rating
VIN Voltage
EN, VOUT Voltages
Temperature: Storage
Operating Ambient
Operating Junction
Power Dissipation
Unit
+ 6.0, Gnd - 0.6
VCC + 0.6, Gnd - 0.6
- 40 to +150
-40 to +85
0 to +150
Internally limited
V
V
°C
Parameter
Operating Conditions
Range
VIN
Temperature (Ambient)
Load Current
note2
COUT
2.2 to 6.0
-40 to +85
0 to 500
0-50
Uni
t
V
°C
mA
µF
W
Electrical Operating Characteristics
o
VOUT+1V< VIN & 2.5V< VIN < 6V, IOUT=1mA, CIN=2.2uF, TJ=25 C, COUT=2.2µ F, VSD=1.5V, unless specified otherwise.
o
o
bold values indicate -40 C<TJ<125 C
Symbol
VOUT
Parameter
Output Voltage Accuracy
VR LINE
Line Regulation Note4
VR LOAD
Load Regulation
RDROP
Dropout Resistance
IGND
Ground Current
Conditions
o
TA = 25 C
o
o
0 C<TJ<125 C
o
o
-40 C<TJ<125 C
VOUT+1V< VIN & 2.5V< VIN < 6V
IOUT=1mA to 500mA Note3
VIN=VOUT+1V
IOUT=1mA to 500mA
VIN=VOUT(nominal)-100mV
EN tied to VCC, ILOAD = 1mA
150
MAX
1
2
3
0.2
0.4
0.25
0.5
1
1.2
200
EN tied to VCC, ILOAD = 500mA
165
200
µA
EN tied to GND, (Disable Mode)
0.01
1
µA
VEN
Enable Voltage
Regulator enabled
VDIS
Disable Voltage
Regulator shutdown
IEN
Enable Input Current
PSRR
Power Supply Ripple Rejection
eN
ton
TYP
0.1
0.1
0.7
1.5
UNIT
%
%
%
%/V
%
Ω
µA
V
0.4
0.18
V
0.01
µA
f=1kHz
75
dB
Output Noise Voltage
CBYP=0.1uF, BW=10Hz to 100kHz
30
VOUT Turn-On-Time
CBYP=0uF
80
µVrm
s
µs
CBYP=0.1uF
100
µs
800
mA
550
mA
165
°C
20
°C
ILIM
Overload Current Limit
ISC
Short Circuit Current
TJSD
Thermal Shutdown Junction
Temperature
Thermal Hysteresis
THYST
MIN
-1
-2
-3
VOUT < 0.5V
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
Thermal Performance
θJA Minimum Footprint
θJA 1” square 2oz copper
O
O
220 C/W
170 C/W
O
O
160 C/W
70 C/W
© 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
3
Preliminary
CM3019
CALIFORNIA MICRO DEVICES
Typical DC Characteristics (nominal conditions unless specified otherwise)
Nominal Conditions: CIN = 1µF, COUT = 2.2µF, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V VOUT)
Load Regulation
Dropout Voltage (VOUT=2.9V)
Foldback Current Limiting
4.0
800
3.10
OUTPUT VOLTAGE [V]
600
DROPOUT [V]
3.00
2.95
500
400
300
200
100
0
2.90
0
100
200
300
400
500
600
200
LOAD CURRENT [m A]
Line Regulation
1mA Load
3.00
2.95
2.90
500mA Load
0 100 200 300 400 500 600 700 800 900
LOAD CURRENT [mA]
Enable Voltage Threshold
1000
3.5
3.0
1mA Load
2.5
2.0
1.5
1.0
3.6 4.0 4.4 4.8 5.2
INPUT VOLTAGE [V ]
5.6
0
1
2
3
4
5
GROUND CURRENT [uA]
175
150
125
100
3
4
2
5
6
3
4
5
6
SUPPLY VOLTAGE [V]
7
Output Supply Current vs. Voltage
2500
200
2
600
6
Ground Current vs. Output Load
1mA Load
1
700
INPUT VOLTAGE [V]
En = Vin
0
800
500
6.0
Supply Current vs. Voltage (EN = V IN)
200
180
160
140
120
100
80
60
40
20
0
900
0.5
0.0
2.80
3.2
1.0
600
THRESHOLD [mV]
OOUTPUT VOLTAGE [V]
OUTPUT VOLTAGE [V]
3.05
2.8
2.0
Line Regulation
3.10
GROUND CURRENT [uA]
400
LOAD [mA]
4.0
2.85
3.0
0.0
0
700
0
INPUT VOLTAGE [V]
100 200 300 400 500 600 700 800
OUTPUT SUPPLY CURRENT [nA]
OUTPUT VOLTAGE [V]
700
3.05
2000
1500
1000
Vin = 0V, EN = 0V
500
0
LOAD CURRENT [mA]
0
1
2
3
4
5
6
OUTPUT SUPPLY 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
Preliminary
CM3019
CALIFORNIA MICRO DEVICES
Input Supply Current vs. Voltage
Input Supply Current vs. Voltage
Output Supply Current vs. Voltage
10000
2500
2000
1500
1000
Vout = 0V, EN = 0V
500
0
0
1
2
3
4
5
6
Clamp to GND
OUTPUT SUPPLY CURRENT [uA]
INPUT SUPPLY CURRENT [nA]
INPUT SUPPLY CURRENT [nA]
2500
Vout = 3V, EN = 0V
2000
1500
1000
500
0
0
INPUT SUPPLY VOLTAGE [V]
1
2
3
4
5
1000
100
Vin = 3V,
EN = 0V
10
1
Protect
0
0
6
INPUT SUPPLY VOLTAGE [V]
1
2
3
4
5
6
OUTPUT SUPPLY VOLTAGE [V]
Transient Characteristics (nominal conditions unless specified otherwise)
Nominal Conditions: CIN = 1µF, COUT = 2.2µF, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V VOUT)
10% to 90% Load Step (tr=1µ s)
3.5V – 4.5V Line Step (tr=1µ s)
10% to 90% Load Step (tr=1µ s)
10% to 90% Load Step (tr=1µ s)
3.5V – 4.5V Line Step (tr=1µ s)
3.5V – 4.5V Line Step (tr=1µ s)
Enable Response
Disable Response
Enable 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
Preliminary
CM3019
CALIFORNIA MICRO DEVICES
Power-up
Power-up
Power-down
Power Supply Ripple Rejection and Noise (nominal conditions unless specified otherwise)
Nominal Conditions: CIN = 1µF, VIN = 4.0V, PSRR measured with 50mV pk-pk sin wave on VIN.
(all plots measured with 3.0V VOUT)
Pow er Supply Ripple Reje ction [dB]
Power Supply Ripple Rejection [dB]
90
90
100uA Load
80
5mA Load
80
5mA Load
100uA Load
70
70
100mA Load
100mA Load
60
PSRR [dB]
PSRR[dB]
60
50
500mA Load
40
30
50
500mA Load
40
30
20
20
10
Cout=10uF, Cbyp=100nF
10
0
10
100
1000
10000
100000
Cout=2.2uF, Cbyp=100nF
0
10
100
1000
10000
100000
Fre que ncy [Hz]
Frequency [Hz]
© 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
6
Preliminary
CM3019
CALIFORNIA MICRO DEVICES
Ouput noise spectral density (100uA Load)
Power Supply Ripple Rejection [dB]
1.E-06
90
80
5mA Load
100uA Load
70
100mA Load
En[uV/rootHz]
PSRR [dB]
60
50
500mA Load
40
30
1.E-07
20
10
Cout = 10uF, Cbyp = 100nF
NO OUTPUT CAP, Cbyp=100nF
0
10
100
1000
10000
100000
1.E-08
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
Frequency [Hz]
Frequency [Hz]
© 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
7
Preliminary
CM3019
CALIFORNIA MICRO DEVICES
Typical Thermal Characteristics (nominal conditions unless specified otherwise)
Nominal Conditions: CIN = 1uF, COUT = 2.2uF, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V Vout)
VOUT vs. Temperature
50
50
40
40
30
30
OUTPUT CHANGE [mV]
OUTPUT CHANGE [mV]
VOUT vs. Temperature
20
10
0
-10
-20
-30
-40
20
10
0
-10
-20
-30
-40
-50
-50
0
25
50
75
100
125
-40 -20
0
20 40 60 80 100 120 140
TEMPERATURE [oC]
o
TEMPERATURE [ C]
IGND vs. Temperature
GROUND CURRENT [uA]
300
250
200
150
100
50
0
-40 -20
0
20 40 60 80 100 120 140
TEMPERATURE [oC]
© 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
8
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