AMS5105 500mA CMOS DROPOUT VOLTAGE REGULATOR RoHS compliant

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AMS5105 500mA CMOS DROPOUT VOLTAGE REGULATOR RoHS compliant

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Fixed Adjustable Versions Available Output Current 500mA Very Quiescent Current Input-output Differential less than 0.5V Short Circuit Protection Internal Thermal Overload Protection ENABLE available selected packages
AMS5105
500mA CMOS DROPOUT VOLTAGE REGULATOR
RoHS compliant
APPLICATIONS
Cellular Telephones Portable Consumer Equipment Portable (Notebook) Computers Battery Powered Systems Portable Instrumentation Radio Control Systems CD/DVD drives
GENERAL DESCRIPTION
AMS5105 series consists positive fixed adjustable voltage regulators ideally suited battery-powered systems. These devices feature very quiescent current (500uA less) when supplying loads 500mA, standby current less than 500nA when disabled using ENABLE (available selected packages). These unique characteristics input-output differential required proper regulation (0.5V output currents 500mA) make AMS5105 ideal standby power systems. Internal current limiting thermal shutdown features provide protection AMS5105 series devices regardless package type. AMS5105 offered fixed voltage regulators lead SOT-23, SOT-89, SOT-223, lead SOIC packages, adjustable voltage regulators lead SOT-23 lead SOIC packages. devices lead SOT-23 lead SOIC packages provided with ENABLE pin.
ORDERING INFORMATION
OUTPUT SOT-23 VOLTAGE FIXED AMS5105M1-X ADJUSTABLE AMS5105M1 1.5V, 1.8V, 2.5V, 2.8V, 3.3V.
PACKAGE TYPE SOT-89 AMS5105L-X SOT-223 AMS5105-X SO-8 AMS5105S-X AMS5105S
TEMP. RANGE -25C 125C -25C 125C
CONNECTIONS
Lead SOT-23 (M1) SOT-89 SOT-223 Lead SOIC
VOUT
VOUT
GROUND ENABLE
GROUND
GROUND GROUND ENABLE
GROUND
View
View
View
View
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com
Phone (925) 443-0722
(925) 443-0723
AMS5105
ABSOLUTE MAXIMUM RATINGS (Note
Input Supply Voltage Internal Power Dissipation (Note -0.3 +6.5V Internally Limited 2000V Maximum Junction Temperature +125°C Storage Temperature -65°C +150°C Lead Temperature (Soldering sec) 265°C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics =VOUT +1V, IOUT =1mA, TJ=25°C, COUT 2.2µF unless otherwise specified. PARAMETER
Fixed Output Voltage Versions Output Voltage Tolerance (VOUT+1V) IOUT=100 -25°C 125°C
CONDITIONS
AMS5105-X Min. Typ. Max.
-1.5 +1.5
Units
mV/V mV/V
Line Regulation Load Regulation
(VIN+1V)
Dropout Voltage Quiescent Current Maximum Operational Input Voltage
ENABLE
500, disabled state, VENABLE
Threshold Voltage
(Note VENABLE VIN, (Note 0.01
Enabled Disabled
ENABLE
Threshold Current
Wake-Up Response Time (from disabled state)
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com
Phone (925) 443-0722
(925) 443-0723
AMS5105
ELECTRICAL CHARACTERISTICS
Electrical Characteristics =6V, VOUT =3V, IOUT =1mA, TJ=25°C, COUT 2.2µF unless otherwise specified. PARAMETER
Adjustable Version Reference Voltage IOUT -25°C 125°C
CONDITIONS
(Note
Min.
1.231
AMS5105 Typ.
1.250 1.250
Units Max.
1.269 1.282
Measured from GROUND Output Voltage Range Line Regulation Load Regulation VOUT
1.218 1.25
Dropout Voltage
(Note
Quiescent Current
500, disabled state, VENABLE Maximum Operational Input Voltage
ENABLE
Threshold Voltage
(Note VENABLE VIN, (Note 0.01
Enabled Disabled
ENABLE
Threshold Current
Wake-Up Response Time (from disabled state)
Note Absolute Maximum Ratings limits beyond which damage device occur. guaranteed performance limits associated test conditions, Electrical Characteristics tables. Note ensure constant junction temperature, duty cycle pulse testing used. Note Limits appearing boldface type apply over entire junction temperature range operation. Limits appearing normal type apply 25°C. Note maximum allowable power dissipation function maximum junction temperature TJ(MAX), junction-to ambient thermal resistance ambient temperature maximum allowable power dissipation ambient temperature calculated using:
P(MAX)
TJ(MAX)
Where values junction-to-ambient thermal resistances follows: 220°C/W lead SOT-23 (M1) 160°C/W molded plastic SO-8 (S). Note Dropout Voltage defined input output differential which output voltage drops 100mV below nominal value measured differential. Note ENABLE Threshold Voltage levels specified percentage input voltage VIN. Quiescent current minimized choosing VENABLE HIGH equal VIN. Note Time required VOUT reach output voltage setting after VENABLE switched from VIN.
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com
Phone (925) 443-0722
(925) 443-0723
AMS5105
TYPICAL PERFORMANCE CHARACTERISTICS
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com
Phone (925) 443-0722
(925) 443-0723
AMS5105
AMS5105/-X Description 5-Lead SOT-23 NAME DESCRIPTION Unregulated input voltage Connect from Ground connection VOUT ENABLE Logical high enables regulator Logical disables regulator Feedback from resistor divider Used output voltage Adjustable versions only (See Figures VOUT Regulated output voltage Connect COUT from VOUT
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com
Phone (925) 443-0722
(925) 443-0723
AMS5105
APPLICATION NOTES
Definition Terms higher loads, value capacitor should increased, especially when output voltage 2.5V less. AMS5105 lowest fixed output voltage value 1.5V. Programming Output Voltage AMS5105 programmed output voltage between 1.25V reference maximum rating, allowing dropout power dissipation. shown Figure external pair resistors required. equation output voltage VOUT VREF where VREF nominal 1.25 reference voltage.
Dropout Voltage: input-output voltage differential which
circuit stops regulate against further reduction input voltage. Measured when output voltage dropped 100mV from nominal voltage obtained input, dropout voltage dependent upon load current junction temperature. Input Voltage: voltage applied input terminal with respect ground. Input-Output Differential: voltage difference between unregulated input voltage regulated output voltage which regulator will regulate. Line Regulation: change output voltage change input voltage. line regulation measured under conditions dissipation using duty cycle pulse testing such that average chip temperature significantly affected. Load Regulation: change output voltage change load current constant chip temperature. Long term stability: Output voltage stability under accelerated life-test conditions after 1000 hours with maximum rated voltage junction temperature. Quiescent Current: That part positive input current that does contribute positive load current. regulator ground lead current. Temperature Stability percentage change output voltage thermal variation from room temperature either temperature extreme.
Typical application circuit (adjustable output)
External capacitor
AMS5105 series requires output capacitor 2.2µF greater ensure device stability, shown Figures through Without capacitor device oscillate. Most types tantalum electrolytic capacitor used applications. value this capacitor increased without limits.
TYPICAL APPLICATION
+VIN
+VIN VOUT
+VIN
+VIN
VOUT
+VIN
VOUT
VOUT COUT
AMS5105-X
COUT
AMS5105-X ENABLE
ENABLE
VOUT AMS5105 1.25V VREF
+VIN
VOUT COUT
Figure
Figure
Figure
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com
Phone (925) 443-0722
(925) 443-0723
AMS5105
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.
LEAD SOT-23 PLASTIC PACKAGE (M1)
0.110-0.120 (2.794-3.048)
0.102-0.118 (2.60-3.00) 0.059-0.070 (1.50-1.75)
0.037 (0.95) 0.018-0.024 (0.457-0.610)
0.014-0.020 (0.350-0.50)
0.036-0.051 (0.090-1.30) 0.0035-0.0080 (0.090-0.20) 0.003 (0.150) 0.075 (1.90) 0.018-0.024 (0.457-0.610)
(SOT-23-5 DRW# 051001
SOT-89 PLASTIC PACKAGE
0.173-0.181 (4.40-4.60) 0.064-0.072 (1.62-1.83)
0.055-0.063 (1.40-1.60)
0.014-0.017 (0.35-0.44)
0.155-0.167 (3.94-4.25) 0.090-0.102 (2.29-2.60) 0.084-0.090 (2.13-2.29)
0.035-0.047 (0.89-1.20) 0.059 (1.50) 0.118 (3.00) 0.014-0.019 (0.36-0.48)
(SOT-89 DRW# 042392
0.017-0.022 (0.44-0.56)
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com
Phone (925) 443-0722
(925) 443-0723
AMS5105
LEAD SOT-223 PLASTIC PACKAGE
LEAD SOIC PLASTIC PACKAGE
0.189-0.197* (4.801-5.004)
0.228-0.244 (5.791-6.197)
0.150-0.157** (3.810-3.988)
0.053-0.069 (1.346-1.752)
0.010-0.020 (0.254-0.508) 0.004-0.010 (0.101-0.254) 0.008-0.010 (0.203-0.254) 0°-8°
0.014-0.019 (0.355-0.483)
0.050 (1.270)
0.016-0.050 (0.406-1.270)
(SO-8 DRW# 042293
*DIMENSION DOES INCLUDE MOLD FLASH. MOLD FLASH SHALL EXCEED 0.006" (0.152mm) SIDE **DIMENSION DOES INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL EXCEED 0.010" (0.254mm) SIDE
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com
Phone (925) 443-0722
(925) 443-0723

AMS5105 500mA CMOS DROPOUT VOLTAGE REGULATOR RoHS compliant

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