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CM3016-48
Micropower, 4.75V/500mA Low Noise CMOS LDO Regulator
Features
* * * * * * * * * * * * * Linear LDO regulator with 4.75V output 500mA output current capability - 500mA peak in SOT-23 package 500mV maximum dropout voltage at full load 150mV maximum dropout at 150mA load Excellent line and load regulation Stable with low ESR 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 Lead-free version available
Product Description
The CM3016-48 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 150A at light loads and only 165A at 500mA. This is 5% more efficient than equivalent Bi-CMOS devices that can waste up to 25mA at 500mA load. The CM3016-48 can maintain load regulation for peak currents up to 500mA, which 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 CM3016-48 is fully protected, offering both overload current limiting and high temperature thermal shutdown. To reduce board cost and layout size, the CM3016 was designed to be stable with or without an output capacitor. This includes tiny, low ESR ceramic capacitors. The CM3016-48 is housed in a 5-pin SOT23 package and is ideal for space critical applications. It is available with optional lead-free finishing.
Applications
* * * Notebook computers Consumer and personal electronics Ideal for powering audio codecs
Typical Application Circuit
CM3016-48
IN EN CIN + 1F IN EN GND CBYP 100nF + OUT BYP COUT + 2.2F OUT
Simplified Electrical Schematic
Reverse Current Protection
IN
Current Limit
OUT
VREF
BYP
Fast Power-Up
+
AMP
-
EN
EN
Enable Control Thermal Overload
GND
(c) 2004 California Micro Devices Corp. All rights reserved. 12/22/04
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CM3016-48
PACKAGE / PINOUT DIAGRAM
Top View
IN GND EN
1 2 3 4 5
OUT
BYP
5-pin SOT23
Note: This drawing is not to scale.
PIN DESCRIPTIONS
SOT23-5 PIN(S) 1 2 3 4 5 NAME IN GND EN BYP OUT DESCRIPTION Regulator input. 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 1-10F will ensure adequate filtering. Ground is 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 input. Connect to an external capacitor for noise reduction. A 10nF-100nF ceramic capacitor is recommended. Regulator output. No output capacitor is required for stability. Any type of output capacitor can be added to improve transient response, noise performance and power supply ripple rejection for frequencies over ~100kHz.
Ordering Information
PART NUMBERING INFORMATION
Standard Finish Pins 5 Package SOT23 Ordering Part Number1 CM3016-48ST Part Marking CA48 Lead-free Finish Ordering Part Number1 CM3016-48SO Part Marking CR48
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
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CM3016-48
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER Pin Voltages IN EN OUT Storage Temperature Range Operating Temperature Range Ambient Junction Power Dissipation (Notes 1,2) RATING [GND - 0.6] to [+6.0] [GND - 0.6] to [VIN + 0.6] [GND - 0.6] to [VIN + 0.6] -40 to +150 -40 to +85 0 to +150 Internally Limited UNITS V V V C C C W
Note 1: The CM3016-48 contains a thermal overload circuit that automatically disables the device thereby preventing excessive junction temperature. When the SOT23-5 package housing the device is mounted on a typical multi-layer board with moderate heat spreading copper area (2 square inches) will allow up to 0.315W to be safely dissipated. Please consult with factory for thermal evaluation assistance. Note 2: Consult CAMD Technical Support for power dissipation information regarding the CM3016-48 packaged in the SOT23 package.
STANDARD OPERATING CONDITIONS
PARAMETER VIN Ambient Operating Temperature Range Load Current COUT RATING [VOUT + 0.15] to 6.0 -40 to +85 0 to 500 0 -100 UNITS VDC C mA F
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CM3016-48
Specifications (continued)
ELECTRICAL OPERATING CHARACTERISTICS (SEE NOTE1)
SYMBOL VOUT PARAMETER Output Voltage CONDITIONS TA = 25C 0C < TJ < 125C -40C < TJ < 125C VOUT+1V < VIN and 2.5V < VIN < 6V IOUT=1mA to 500mA; VIN=VOUT+1V; Note 3 IOUT=1mA to 500mA; VIN=VOUT(nominal)-100mV with EN tied to VIN; ILOAD =1mA: with EN tied to VIN; ILOAD =150mA: with EN tied to GND (Disable Mode): VEN VDIS IEN ENOISE tON ILIM ISC TJSD THYST Enable Voltage Disable Voltage Enable Input Current Output Noise Voltage VOUT Turn-on Time Overload Current Limit Short Circuit Current Limit Thermal Shutdown Junction Temperature Thermal Hysteresis VOUT < 0.5V BW=10Hz-100kHz; COUT = 2.2F; CBYP = 0.1F CBYP = 0F; COUT = 2.2F CBYP = 0.1F; COUT = 2.2F 30 80 100 800 550 165 20 Regulator becomes enabled Regulator enters shutdown 1.5 0.4 0.18 0.01 MIN 4.70 4.66 4.61 TYP 4.75 4.75 4.75 0.1 0.1 0.7 150 165 0.01 MAX 4.80 4.85 4.89 0.2 0.4 0.5 0.8 1 1.2 200 200 1 UNITS V V V % % % % A A A V V V A Vrms S S mA mA C C
VR LINE VR LOAD RDROP IGND
Line Regulation (see Note 4) Load Regulation Dropout Resistance Ground Current
Note 1: VOUT+1V< VIN & 2.5V< VIN < 6V, IOUT=1mA, CIN=2.2uF, TJ=25C, unless specified otherwise. Bold values indicate -40C < TJ < 125C Note 2: Tantalum, electrolytic or low ESR ceramic capacitors may be used for COUT. 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.
THERMAL PERFORMANCE
PACKAGE SOT23-5
JA MINIMUM FOOTPRINT
220C/W
JA 1" SQUARE 2OZ. COPPER
170C/W
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CM3016-48
Performance Information
Typical DC Characteristics (nominal conditions unless otherwise specified, CM3016-48ST Only) CIN = 2.2uF, COUT = 2.2uF, No CBYP,, VIN = 5.75V, Load = 5mA
Load Regulation
4.800
OUTPUT VOLTAGE [V]
Dropout Voltage (Vout=4.7V)
500
OUTPUT VOLTAGE [V]
Foldback Current Limiting
5.0 4.0 3.0 2.0 1.0 0.0
400
DROPOUT [mV]
4.775
300 200 100 0
4.750
4.725
4.700 0 100 200 300 400 500 600 700
LOAD CURRENT [mA]
0
200
400 LOAD [mA]
600
800
0
200
400
600
800
1000 1200
LOAD CURRENT [mA]
Line Regulation
4.76 1mA Load
OUTPUT VOLTAGE [V]
5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 1
Line Regulation
1000 900 800 700 600 500
2 3 4 5 6
INPUT VOLTAGE [V]
Enable Voltage Threshold
4.75 4.74 4.73 4.72 4.71 4.70 4.7 5.2 5.7 6.2
INPUT VOLTAGE [V]
OOUTPUT VOLTAGE [V]
1mA Load
200mA Load
THRESHOLD [mV]
4.5
5.0 5.5 SUPPLY VOLTAGE [V]
6.0
Supply Current vs. Voltage (EN = VIN)
180
GROUND CURRENT [uA]
GROUND CURRENT [uA]
Ground Current vs. Output Load
200
Output Supply Current vs. Voltage
2500
OUTPUT SUPPLY CURRENT [nA]
160 140 120 100 80 60 40 20 0 0
En = Vin
175 150
2000 1500 1000 Vin = 0V, EN = 0V 500 0 0 1 2 3 4 5 6
OUTPUT SUPPLY VOLTAGE [V]
1mA Load
125 100 0 100 200 300 400 500 600 700 800
LOAD CURRENT [mA]
1
2
3
4
5
6
INPUT VOLTAGE [V]
Input Supply Current vs. Voltage
2500
INPUT SUPPLY CURRENT [nA]
Input Supply Current vs. Voltage
3000 2500 2000 1500 1000 500 0 0
INPUT SUPPLY VOLTAGE [V]
Output Supply Current vs. Voltage
10000
OUTPUT SUPPLY CURRENT [uA]
INPUT SUPPLY CURRENT [nA]
Vout = 4.75V, EN = 0V
Clamp to GND 1000 100 10 1 Protect 0 0.0 1.0 2.0 3.0 4.0 5.0 6.0
OUTPUT SUPPLY VOLTAGE [V]
2000 1500 1000 Vout = 0V, EN = 0V 500 0 0 1 2 3 4 5 6
INPUT SUPPLY VOLTAGE [V]
Vin = 4.75V, EN = 0V
1
2
3
4
5
6
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CM3016-48
Performance Information (cont'd)
Transient Characteristics (nominal conditions unless otherwise specified, CM3016-48ST Only) CIN = 2.2uF, COUT= 2.2uF, CBYP= 0.1uF, VIN = 5.0V, Load = 5mA,
Load Step Response Load Step Response
Line Step Response
Enable, Disable Response
Enable Response
Disable Response
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CM3016-48
Performance Information (cont'd)
Power Supply Ripple Rejection (nominal conditions unless otherwise specified, CM3016-48ST Only) CIN = 1uF, VIN = 5.0V, Load = 5mA, PSRR measured with 10mV pk-pk sin wave on VIN.
PSRR (VIN-VOUT = 500mV)
80 70
0.1mA
PSRR (VIN-VOUT = 250mV)
80 70
0.1mA
60 50
60 50
5mA 20mA 50mA 100mA 200mA
PSRR [dB]
PSRR [dB]
40 30 20 10
Cout=2.2uF, Cbyp=100nF, Vin-Vout=500mV
40
5mA
30 20 10
20mA 50mA 100mA
300mA 400mA 500mA
200mA Cout=2.2uF, Cbyp=100nF, Vin-Vout=250mV
0 10 100 1000 Frequency [Hz] 10000 100000
0 10 100 1000 Frequency [Hz] 10000
300mA 400mA
100000
PSRR (VIN-VOUT = 200mV)
80 70
0.1mA
PSRR (VIN-VOUT = 175mV)
80 70 60
0.1mA
60 50
50
PSRR [dB]
PSRR [dB]
40
5mA
40
5mA
30 20 10
Cout=2.2uF, Cbyp=100nF, Vin-Vout=200mV
30
20mA 50mA 100mA 200mA 300mA
20mA
20 10 0 10 100 1000 Frequency [Hz] 10000
50mA Cout=2.2uF, Cbyp=100nF, Vin-Vout=175mV 100mA 200mA
0 10 100 1000 Frequency [Hz] 10000
100000
100000
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CM3016-48
Performance Information (cont'd)
Power Supply Ripple Rejection (nominal conditions unless otherwise specified, CM3016-48ST Only) CIN = 1uF, VIN = 5.0V, Load = 5mA, PSRR measured with 10mV pk-pk sin wave on VIN.
PSRR (VIN-VOUT = 150mV)
80 70
0.1mA
PSRR (VIN-VOUT = 125mV)
80 70
0.1mA
60
PSRR [dB]
60 50 40 30 20 10 0 10 100 1000 Frequency [Hz] 10000 100000
5mA 20mA 50mA Cout=2.2uF, Cbyp=100nF, Vin-Vout=125mV 100mA
50
PSRR [dB]
40
5mA
30
20mA
20
50mA
10 0 10
Cout=2.2uF, Cbyp=100nF, Vin-Vout=150mV
100mA 200mA
100
1000 Frequency [Hz]
10000
100000
PSRR (VIN-VOUT = 100mV)
80 70
0.1mA
60 50
PSRR [dB]
40 30 20 10 0 10 100 1000 Frequency [Hz] 10000
5mA
20mA 50mA 100mA
Cout=2.2uF, Cbyp=100nF, Vin-Vout=100mV
100000
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CM3016-48
Performance Information (cont'd)
Typical Thermal Characteristics (nominal conditions unless otherwise specified, CM3016-48ST Only) CIN = 2.2uF, COUT = 2.2uF, No CBYP ,VIN = 5.0V, Load = 5mA.
VOUT vs. Temperature (200mA Load)
50 40
OUTPUT CHANGE [mV]
VOUT vs. Temperature
20 15
OUTPUT CHANGE [mV]
30 20 10 0 -10 -20 -30 -40 -50 -40 -20 0 20 40 60 80 100 120
TEMPERATURE [oC]
10 5 0 -5 -10 -15 -20 0 25 50 75 100 125 150
JUNCTION TEMPERATURE [oC]
Ignd vs. Temperature
300
GROUND CURRENT [uA]
Dropout Resistance vs. Temperature
1.0
Dropout Resistance [Ohms]
250 200 150 100 50 0 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE [oC]
0.8 0.6 0.4 0.2 0.0 -40 0 40 80 120 160
TEMPERATURE [oC]
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CM3016-48
Mechanical Details
The CM3016-48 is available in a 5-pin SOT23 package. Dimensions for this package is presented below. SOT23-5 Mechanical Specifications Dimensions for CM3016-48ST/SO devices packaged in a 5-pin SOT23 package are presented below. For complete information on the SOT23 package, see the California Micro Devices SOT23 Package Information document.
5
Mechanical Package Diagrams
TOP VIEW
e1
e
4
E1 E
PACKAGE DIMENSIONS
Package Pins Dimensions A A1 b c D E E1 e e1 L # 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 -0.000 0.012 0.003 0.108 0.102 0.057 SOT23 (JEDEC name is MO-178) 5 Inches Max 0.057 0.006 0.020 0.009 0.120 0.118 0.069
1
2
3
b
SIDE VIEW
D A
A1
END VIEW
0.95 BSC 1.90 BSC 0.60 REF
0.0374 BSC 0.0748 BSC 0.0236 REF 3000 pieces c
Controlling dimension: inches
L1
Package Dimensions for SOT23-5.
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