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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 150A at light loads and only 165A at 300mA. Load regulation of 0.25% is maintained for peak currents 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 dissipation, 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 transistor'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 supply ripple rejection, a bypass capacitor can be connected 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 capacitor. 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 VCC and VPP 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
VREF
Current Limit +
AMP
BYP Fast Power-Up EN
-
EN
R1
VSENSE* Enable Control Thermal Overload
Active Pulldown
R2
GND * Adjustable output version only
(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
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1
PRELIMINARY CM3015
PACKAGE / PINOUT DIAGRAM (Note 1)
TOP VIEW
VIN GND EN
1 5
TOP VIEW
VOUT VIN GND BYP EN
1 6
TOP VIEW
VOUT SENSE BYP EN VIN VOUT BYP 1 8 GND GND GND EN VIN VOUT
TOP VIEW
1 8 GND GND GND GND
CCnn2
4
CM30 1500
CM30 15nn2
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 VIN DESCRIPTION VIN 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 1-10F will ensure adequate filtering. The negative reference for all voltages. Enable input. 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. This pin sets VOUT with an external divider: VOUT = VSENSE(1+ R1/R2). R1 is the upper resistor, like the internal divider shown on the block diagram on page 1. VOUT 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 frequencies over ~100kHz (see note 1).
2 3 4
2 3 4 5
5-8 1 4 4
GND EN BYP VSENSE
-
5
6
3
VOUT
Note 1: Tantalum, electrolytic or low cost ceramic capacitors may be used.
(c) 2004 California Micro Devices Corp. All rights reserved.
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Tel: 408.263.3214
Fax: 408.263.7846
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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 Number1 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 VIN EN VOUT Storage Temperature Range Operating Temperature Range, Junction Power Dissipation (Notes 1,2) RATING +2000 [GND - 0.6] to [+6.0] [GND - 0.6] to [VCC + 0.6] [GND - 0.6] to [VCC + 0.6] -40 to +150 0 to +150 Internally Limited UNITS V V V V C C W
STANDARD OPERATING CONDITIONS
PARAMETER VIN Ambient Operating Temperature Range Load Current CEXT (notes 1 and 2) RATING 2.2 to 6.0 -40 to +85 0 to 300 0 to 50 UNITS V C mA F
Note 1: Tantalum, electrolytic or low cost ceramic capacitors may be used. Note 2: VOUT + 1V < VIN & 2.5V < VIN < 6V, IOUT = 1mA, CIN = 2.2F, TJ = 25C, COUT = 2.2F, VSD = 1.5V, unless specified otherwise. Bold values indicate -40C < TJ < 125C
(c) 2004 California Micro Devices Corp. All rights reserved. 09/14/04
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Tel: 408.263.3214
Fax: 408.263.7846
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3
PRELIMINARY CM3015
Specifications (cont'd)
ELECTRICAL OPERATING CHARACTERISTICS
SYMBOL VOUT PARAMETER Regulator Output Voltage CONDITIONS TA = 25C 0C(SEE NOTE 1)
MIN -1 -2 -3
TYP
MAX +1 +2 +3
UNIT S % % % %/V % V
VR LINE VR LOAD VSENSE RDROP IGND
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
A A A V V A dB Vrms s s mA mA C C
Note 1: VOUT + 1V < VIN & 2.5V < VIN < 6V, IOUT = 1mA, CIN = 2.2F, TJ = 25C, COUT = 2.2F, VSD = 1.5V, unless specified otherwise. Bold values indicate -40C < TJ < 125C 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
JA MINIMUM FOOTPRINT
220C/W 160C/W
JA 1" SQUARE 2OZ. COPPER
170C/W 70C/W
(c) 2004 California Micro Devices Corp. All rights reserved.
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Tel: 408.263.3214
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PRELIMINARY CM3015
Performance Information
Typical DC Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1F, COUT = 2.2F, No CBYP , VIN = 4.0V, Load = 5mA (all plots measured with 3.0V VOUT)
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 (ILOAD=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 (VOUT=2.9V)
Figure 5. Line Regulation (ILOAD=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
(c) 2004 California Micro Devices Corp. All rights reserved. 09/14/04
Figure 6. Line Regulation (ILOAD=1mA)
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
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PRELIMINARY CM3015
Performance Information (cont'd)
Typical DC Characteristics (cont'd - nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1F, COUT = 2.2F, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V VOUT)
2500
INPUT SUPPLY CURRENT [nA]
1000 900 800 700 600 500 2 3 4 5 6 SUPPLY VOLTAGE [V] 7
2000 1500 1000 VOUT = 0V, EN = 0V 500 0 0
INPUT SUPPLY VOLTAGE [V]
THRESHOLD [mV]
1
2
3
4
5
6
Figure 7. Enable Voltage Threshold
350
Figure 10. Input Supply Current vs. Voltage
QUIESCENT CURRENT [A]
INPUT SUPPLY CURRENT [nA]
300 250 200 150 100 50 0 0 1 2 3 4 5 6
2500 2000 1500 1000 500 0 0
INPUT SUPPLY VOLTAGE [V]
VOUT = 3V, EN = 0V
1
2
3
4
5
6
INPUT VOLTAGE (V)
Figure 8. Supply Current vs. Voltage (EN=VIN, ILOAD = 5mA)
Figure 11. Input Supply Current vs. Voltage
10000
2500
OUTPUT SUPPLY CURRENT [nA]
OUTPUT SUPPLY CURRENT [A]
Clamp to GND 1000 100 10 1 Protect 0 0 1 2 3 4 5 6
OUTPUT SUPPLY VOLTAGE [V]
2000 1500 1000 VIN = 0V, EN = 0V 500 0 0
OUTPUT SUPPLY VOLTAGE [V]
VIN = 3V, EN = 0V
1
2
3
4
5
6
Figure 12. Output Supply Current vs. Voltage
Figure 9. Output Supply Current vs. Voltage
(c) 2004 California Micro Devices Corp. All rights reserved.
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Tel: 408.263.3214
Fax: 408.263.7846
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09/14/04
PRELIMINARY CM3015
Performance Information (cont'd)
Transient Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1F, COUT = 2.2F, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V VOUT)
Figure 13. 10% to 90% Load Step (tr=1s, COUT=10F)
Figure 16. 3.5V - 4.5V Line Step (tr=1s, No COUT)
Figure 14. 10% to 90% Load Step (tr=1s, COUT=2.2F)
Figure 17. 3.5V - 4.5V Line Step (tr=1s, No COUT, CBYP=100nF)
Figure 15. 10% to 90% Load Step (tr=1s, COUT=1.0F)
(c) 2004 California Micro Devices Corp. All rights reserved. 09/14/04
Figure 18. 3.5V - 4.5V Line Step (tr=1s, COUT=2.2F, CBYP=100nF)
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PRELIMINARY CM3015
Performance Information (cont'd)
Transient Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1F, COUT = 2.2F, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V VOUT)
Figure 19. Enable Response (No CBYP , No Load)
Figure 22. Power-Up (EN=VIN, ILOAD=5mA, No COUT, No CBYP)
Figure 20. Enable Response (CBYP=100nF, No Load)
Figure 23. Power-Up (EN=VIN, ILOAD=5mA, COUT=2.2F, CBYP=100nF)
Figure 21. Disable Response (CBYP=100nF, No Load)
(c) 2004 California Micro Devices Corp. All rights reserved.
Figure 24. Power-Down (ILOAD=5mA)
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PRELIMINARY CM3015
Performance Information (cont'd)
Power Supply Ripple Rejection and Noise Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1F, VIN = 4.0V, PSRR measured with 50mV peak-to-peak sine wave on VIN.
Power Supply Ripple Rejection
80 70 60
PSRR (dB)
Power Supply Ripple Rejection
80 70 60
40 30 20 10 0 10
PSRR (dB)
50 100uA Load 5mA Load 100mA Load 300mA Load
50 40 30 20 10 0 100uA Load 5mA Load 100mA Load 300mA Load 10 100 1000 Frequency (Hz) 10000 100000
100
1000 Frequency (Hz)
10000
100000
Figure 25. Power Supply Ripple Rejection (COUT=10F, CBYP=100nF)
Figure 27. Power Supply Ripple Rejection (No COUT, CBYP=100nF)
Power Supply Ripple Rejection
80 70 60
1.E-06
Ouput noise spectral density (100uA Load)
PSRR (dB)
50 40 30 20 10 0 10 100 1000 Frequency (Hz) 10000 100000 100uA Load 5mA Load 100mA Load 300mA Load
En[V/rootHz]
1.E-07
COUT = 10F, CBYP = 100nF 1.E-08 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05
Frequency [Hz]
Figure 26. Power Supply Ripple Rejection (COUT=2.2F, CBYP=100nF)
Figure 28. Output Noise Spectral Density (ILOAD=100A, COUT=10F, CBYP=100nF)
(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
9
PRELIMINARY CM3015
Performance Information (cont'd)
Typical Thermal Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1F, COUT = 2.2F, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V VOUT)
50 40
OUTPUT CHANGE [mV]
300
GROUND CURRENT [A]
30 20 10 0 -10 -20 -30 -40 -50 0 25 50 75 100 125
TEMPERATURE [oC]
250 200 150 100 50 0 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE [oC]
Figure 29. VOUT vs. Temperature (TA = 0C to 125C)
50 40
OUTPUT CHANGE [mV]
Figure 31. IGND vs. Temperature (TA = -40C to 140C)
30 20 10 0 -10 -20 -30 -40 -50 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE [oC]
Figure 30. VOUT vs. Temperature (TA = -40C to 140C)
(c) 2004 California Micro Devices Corp. All rights reserved.
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PRELIMINARY CM3015
Application Information
VIN=VOUT+ RDROP(IOUT) VOUT=VSENSE (1+R1/R2)
1
VIN
VOUT 6
R1 31.6k 1.20V
VOUT= 4.992V
2
GND SENSE 5
R2
10.0k
3
EN
BYP 4
For the input voltage, Vin minimum will depend on the output current. For example, if Iout is 100mA, Vin must be at least 4.992V = 1ohm x 100mA = 4.992 + 0.1 = 5.092V.
Figure 32. Adjustable Regulator Application Example
Output Compensation Low-dropout regulator topologies use a current-carrying transistor ("pass device") that adds additional gain and phase shift to the design. It is necessary to compensate for these attributes to prevent the design from becoming unstable. The simplest way to do this is to add an output RC filter to roll off the gain. Since all regulators use an output capacitor anyway, the only component needed is a suitable resistance. Fortunately, for the usual range and types of output capacitors, this resistance can be supplied by the ESR of the caps. For many years, capacitors have been the largest components in regulator circuits, but newer types are shrinking in size rapidly. Unfortunately, their ESRs have shrunk as well, taking them out of the range where they can perform the R function described in existing LDOs. The CM3015 is a new breed of LDO regulator that can work with these tiny low-ESR capacitors and thus permit designs that take a minimum of space. An attribute of the LDO topology is that the pass device gain generally increases with increasing output current. This may affect output stability: a design that didn't need a capacitor now does, or a design that used a small value now needs a larger one. The CMD advantage is that this component can be selected from any capacitor family without regard to its ESR. If the circuit calls for a tiny, low-ESR capacitor, it will work just fine.
(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
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PRELIMINARY CM3015
Mechanical Details
CM3015 devices are available in a 5-lead SOT23 package, a 6-lead SOT23 package and an 8-lead MSOP package. Dimensions are presented below and on the following pages. SOT23-5 Mechanical Specifications The dimensions for the 3-lead SOT23 package are presented below.
5
Mechanical Package Diagrams
TOP VIEW e1 e
4
E1 E
PACKAGE DIMENSIONS
Package JEDEC No. Pins/Leads Dimensions A A1 b c D E E1 e e1 L L1 # per tape and reel Millimeters Min -0.00 0.30 0.08 2.75 2.60 1.45 Max 1.45 0.15 0.50 0.22 3.05 3.00 1.75 Min -0.0000 0.0118 0.0031 0.1083 0.1024 0.0571 SOT23-5 MO-178 (Var. AA) 5 Inches Max 0.0571 0.0059 0.0197 0.0087 0.1201 0.1181 0.0689 c L1 L END VIEW A1 A
1 2 3
b SIDE VIEW D
0.95 BSC 1.90 BSC 0.30 0.60 0.60 REF
0.0374 BSC 0.0748 BSC 0.0118 0.0236 0.0236 REF 3000 pieces
Controlling dimension: millimeters
Package Dimensions for SOT23-5.
(c) 2004 California Micro Devices Corp. All rights reserved.
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09/14/04
PRELIMINARY CM3015
Mechanical Details (cont'd)
SOT23-6 Mechanical Specifications The dimensions for the 6-lead SOT23 package are presented below. Mechanical Package Diagrams
TOP VIEW
PACKAGE DIMENSIONS
Package JEDEC No. Pins/Leads Dimensions A A1 b c D E E1 e e1 L L1 # per tape and reel Millimeters Min -0.00 0.30 0.08 2.75 2.60 1.45 Max 1.45 0.15 0.50 0.22 3.05 3.00 1.75 Min -0.0000 0.0118 0.0031 0.1083 0.1024 0.0571 SOT23-6 MO-178 (Var. AB) 6 Inches Max 0.0571 0.0059 0.0197 0.0087 0.1201 0.1181 0.0689
1
Pin 1 Marking
e1
6 5
e
4
E1 E
2 3
b SIDE VIEW D A
0.95 BSC 1.90 BSC 0.30 0.60 0.60 REF
0.0374 BSC 0.0748 BSC 0.0118 0.0236 END VIEW A1 0.0236REF 3000 pieces
Controlling dimension: millimeters c L1 L
Package Dimensions for SOT23-6.
(c) 2004 California Micro Devices Corp. All rights reserved. 09/14/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
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PRELIMINARY CM3015
Mechanical Details (cont'd)
MSOP-8 Mechanical Specifications: The dimensions for the 6-lead SOT23 package are presented below.
8
Mechanical Package Diagrams
TOP VIEW
D
7 6 5
PACKAGE DIMENSIONS
Package Pins Dimensions A A1 B C D E e H L # per tube # per tape and reel 2.90 2.90 4.78 0.52 Millimeters Min 0.87 0.05 0.18 3.10 3.10 4.98 0.54 0.114 0.114 0.188 0.017 Max 1.17 0.25 Min 0.034 0.002 MSOP 8 Inches Max 0.046 0.010
1 2 3 4
H
E
Pin 1 Marking
0.30 (typ)
0.012 (typ) 0.007 0.122 0.122
SIDE VIEW
0.65 BSC
0.025 BSC 0.196 0.025
SEATING PLANE
A A1 B e
END VIEW
80 pieces* 4000 pieces Controlling dimension: inches
C
* This is an approximate amount which may vary.
L Package Dimensions for MSOP-8
(c) 2004 California Micro Devices Corp. All rights reserved.
14 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
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