AMS500 ADMOS | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 7

Technical content

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 Advanced AMS500 Monolithic LOW COST 500mA REGULATOR Systems FEATURES APPLICATIONS

  • • Fixed and Adjustable Versions Available •• Cellular Telephones
  • • Output Current up to 500mA •• Portable Consumer Equipment
  • • Very Low Quiescent Current •• Portable (Notebook) Computers
  • • Reverse Battery Protection •• Battery Powered Systems
  • • Input-output Differential less than 0.6V •• Portable Instrumentation
  • • Short Circuit Protection •• Radio Control Systems
  • • Internal Thermal Overload Protection •• CD/DVD drives
  • • Overvoltage Protection •• Automotive
  • • ON/OFF Pin GENERAL DESCRIPTION The AMS500 series consists of positive fixed and adjustable voltage regulators ideally suited for use in battery-powered systems. These devices feature very low quiescent current of 0.8mA or less when supplying 50mA loads. This unique characteristic and the low input-output differential required for proper regulation (0.2V for output currents of 100mA) make the AMS500 ideal to use for standby power systems. Internal circuitry of AMS500 is protected from input fault conditions caused by input voltages that exceed maximum rated input voltage. During line transients, when the input voltage to the regulator can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both internal circuits and the load. The AMS500 series also includes internal current limiting, thermal shutdown. The AMS500 is offered in 3 lead TO-92, SOT-89 and 5 leads SOT-23 packages.

ORDERING INFORMATION

OUTPUT PACKAGE TYPE TEMP. VOLTAGE 3L TO-92 SOT-89 SOT-23-5 RANGE FIXED AMS500N-X AMS500L-X AMS500M1-X IND ADJ. AMS500M1 IND PIN CONNECTIONS TO-92 Plastic Package (N) SOT-89 (L)

5 Lead SOT-23

(M1) OUTPUT INPUT GND 1 2 3 OUTPUTGNDINPUT INPUT OUTPUT ON/OFF ADJ / N/C GROUND 3 4 Bottom View Top View Top View

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS500 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Voltage Maximum Junction Temperature +125 °C Operating 25V Storage Temperature -65 °C to +150 °C Overvoltage Protection 26V to 40V Lead Temperature (Soldering 10 sec) 230 °C Internal Power Dissipation (Note 4) Internally Limited ESD 2000V

ELECTRICAL CHARACTERISTICS

E lectrical Characteristics at V IN =6.3V, I O =5mA, T J =25 ° C, C2 = 22 µF unless otherwise specified. AMS500-XPARAMETER CONDITIONS Min. Typ. Max. Units Fixed Output Voltage Versions Output Voltage Tolerance -4.0 +4.0 % 6.3V ≤V IN Line Regulation 6V ≤V IN ≤ 15V 15V ≤V IN ≤ 25V mV mV Load Regulation 5mA ≤I O ≤ 100 mA 5mA ≤10 ≤ 200 mA 5mA ≤10 ≤ 350 mA 5mA ≤10 ≤ 500 mA mV mV mV mV Dropout Voltage I O = 100 mA I O = 200 mA I O = 350 mA I O = 500 mA 0.25 0.40 0.45 0.55 0.40 0.50 0.60 0.80 mV mV mV mV Quiescent Current I O ≤ 10 mA, I O = 100 mA I O ≤ 200 mA I O = 350 mA 0.2 0.5 mA mA mA mA Output Noise Voltage 10Hz-100kHz, C OUT = 100 µF 50 µV rms Output Bypass Capacitor ESR=0.1 to 10 Ω 10 µF Ripple Rejection f O =120Hz 80 dB Maximum Operational Input Voltage 25 28 V Maximum Line Transient R L = 500 Ω , V O ≤ 5.5V T = 1ms, τ ≤100ms 35 40 V

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS500 Electrical Characteristics at V IN =6V, V OUT =3V I O =5mA, T J =25 ° C, R1 =27k, C2 = 2 µF unless otherwise specified. AMS500-XPARAMETER CONDITIONS (Note 2) Min. Typ. Max. Units Adjustable Version Reference Voltage 1.20 1.235 1.27 V I O ≤ 100 mA, -40 °C ≤T J ≤ 125 °C, R1=27k, Measured from V OUT to Adj. Pin 1.180 1.235 1.290 V Output Voltage Range 2 24 V Line Regulation 6V ≤V IN ≤ 25V .02 1.5 mV/V Load Regulation 5mA ≤I O ≤ 100 mA 5mA ≤10 ≤ 200 mA 5mA ≤10 ≤ 350 mA 5mA ≤10 ≤ 500 mA 0.3 0.5 1.0 1.0 0.5 1.5 2.0 Dropout Voltage I O = 100 mA I O = 200 mA I O = 350 mA I O = 500 mA 0.05 0.3 0.5 0.6 0.40 0.50 0.60 0.80 V V V V Quiescent Current I O = 0 mA, I O = 100 mA I O = 200 mA I O = 350 mA 0.18 2.0 5.0 0.5 mA mA mA mA Output Noise Voltage 10Hz-100kHz 100 µV rms /V Output Bypass Capacitor ESR=0.1 to 10 Ω 10 µF Long Term Stability T =1000hr 0.4 %/1000hr Ripple Rejection f O = 120Hz 0.02 dB Maximum Operational Input Voltage 21 22 V Maximum Line Transient I O = 10mA, Reference Voltage ≤ 1.5V T = 1ms, τ ≤100ms 35 40 V On/Off Threshold Voltage On Off V O = 3V 2.5 1.8 2.0 1.5 V V On/Off Threshold Current V OFF = 2.4V 35 60 µA Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. For guaranteed performance limits and associated test conditions, see the Electrical Characteristics tables. Note 2: To ensure constant junction temperature, low duty cycle pulse testing is used. Note 3: Limits appearing in boldface type apply over the entire junction temperature range for operation. Limits appearing in normal type apply for T A = T J = 25 °C. Note 4: The maximum allowable power dissipation is a function of the maximum junction temperature T J (MAX), the junction-to ambient thermal resistance θJ-A and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is calculated using: A-J AJ T-(MAX)TP(MAX) q Where the value of the junction-to-ambient thermal resistance are as follows: 195 °C/W for TO-92 (N), 110 °C/W for SOT-89 (L) and 220 °C/W for 5 lead SOT-23.

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS500 TYPICAL PERFORMANCE CHARACTERISTICS 6.0 Low Voltage Behavior 2.0 3.0 4.0 5.0 INPUT VOLTAGE (V) AMS500-3.3 I O = 500mA 0 40 80 0.6 0.4 0.2 Dropout Voltage 120 JUNCTION TEMPERATURE (° C) INPUT OUTPUT DIFFERENTIAL (V) 0.1 0.5 0.3 I O = 100mA 0 300 0.6 0.4 0.2 Dropout Voltage 600 OUTPUT CURRENT (mA) INPUT OUTPUT DIFFERENTIAL (V) 0.1 0.5 0.3 OUTPUT VOLTAGE (V) I O = 150mA I O = 200mA 400 500200100 I O = 350mA -20 -10 0 10 20 30 40 50 60 INPUT VOLTAGE (V) Output at Voltage Extremes OUTPUT VOLTAGE (V)0 AMS500-5.0 R L =500 m Ω -20 -10 0 10 20 30 40 50 60 INPUT VOLTAGE (V) Output at Voltage Extremes OUTPUT VOLTAGE (V)0 AMS500-3.3 R L =500 m Ω 6.0 Low Voltage Behavior 2.0 3.0 4.0 5.0 INPUT VOLTAGE (V) AMS500-5.0 IO = 500mA OUTPUT VOLTAGE (V) 0 10 20 1200 800 400 Peak Output Current INPUT VOLTAGE (V) OUTPUT CURRENT ( m A) 200 1000 600 T J = 25° C 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) Ripple Rejection RIPPLE REJECTION (dB)50 C2 = 100 µF ALUM I O = 10 m A C2 = 22 µF TANTALUM 1.20 1.30 Reference Voltage 1.12 1.14 1.16 1.18 1.22 1.24 1.26 1.28 OUTPUT VOLTAGE (V) REFERENCE VOLTAGE (V) 3 6 9 12 15 18 21 240 1.10 AMS500 ADJUSTABLE

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS500 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) APPLICATION NOTES Definition of Terms Dropout Voltage : The input-output voltage differential at which the circuit stops to regulate against further reduction in input voltage. Measured when the output voltage has dropped 100mV from the nominal voltage obtained at 1V input, dropout voltage is dependent upon load current and junction temperature. Input Voltage : The DC voltage applied to the input terminal with respect to ground. Input-Output Differential : The voltage difference between the unregulated input voltage and the regulated output voltage for which the regulator will regulate. Line Regulation : The change in output voltage for a change in the input voltage. The line regulation is measured under conditions of low dissipation or by using low duty cycle pulse testing such that the average chip temperature is not significantly affected. Load Regulation : The change in output voltage for a change in load current at constant chip temperature. Long term stability : Output voltage stability under accelerated life-test conditions after 1000 hours with maximum rated voltage and junction temperature. Output Noise Voltage : The rms AC voltage at the output, with constant load and no input ripple, measured over a specified frequency range. Quiescent Current : That part of the positive input current that does not contribute to the positive load current. The regulator ground lead current. Ripple Rejection : The ratio of the peak-to –peak input ripple voltage to the peak-to-peak output ripple voltage at specified frequency. Temperature Stability of V O : The percentage change in output voltage for a thermal variation from room temperature to either temperature extreme. External capacitor The AMS500 series require an output capacitor of 10 µF or greater to ensure device stability. Without the capacitor the device may oscillate Most type of tantalum or electrolytic capacitor can be used in the applications. A critical characteristic of the capacitors is an ESR value of 5 Ω or less and a resonant frequency above 500kHz. The value of this capacitor can be increased without limits. For higher loads, the value of the capacitor should be increased, specialy when the output voltage is set for 2.5V or less. The AMS500 lowest fixed output voltage value is 2.0V Typical application circuit (adjustable output) R 2 ADJ + AMS500 ADJUSTABLE GND 22 µF 10µF OUT OFF ON ON/OFF R 1 28k V OUT V IN 100k Minimum Load In circuits using the fixed output voltage versions, minimum load is not required. For circuits using the adjustable device, the value of R1 and R2 should be chosen such, that a current of approximately 40 µA flows through the network. The reference voltage (1.235V) is measured between the adjust pin and V OUT . The output voltage can be set by the two resistors R1 and R2 using the following equation:  += R2R1VV REFO The value of R1 is recommended to be between 25k Ω to 30 k Ω , and the value of R2 will set the output voltage. -40 40 80 120 QUIESCENT CURRENT (mA) Quiescent Current TEMPERATURE (° C) 0 100 200 Quiescent Current 300 OUTPUT CURRENT (mA) QUIESCENT CURRENT (mA)2 6 ~~ ~~ V IN = 6V 20 IO = 50mA IO = 0mA 50 150 250 350 IO = 100mA IO = 200mA -2.5 2.5 5.0 17.5 0 1 2 4 5 6 7 8 10 INPUT VOLTAGE (V) Quiescent Current QUIESCENT CURRENT ( µA) 7.5 12.5 IO = 10 m A 3 9

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS500 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 3L TO-92 PLASTIC PACKAGE (N) SOT-89 PLASTIC PACKAGE (L) 0.140±0.010 (3.556±0.127) 0.060±0.010 (1.524±0.254) 0.015±0.002 (1.270±0.127) 0.060±0.005 (1.524±0.127) DIA 0.180±0.005 (4.572±0.127) 0.180±0.005 (4.572±0.127) 0.050 (1.270) MAX 0.500 (12.70) MIN UNCONTROLLED LEAD DIMENSIONS 10° NOM5° NOM N (TO-92 ) AMS DRW# 042391 0.90 (2.286) NOM 0.090-0.102 (2.29-2.60) 0.173-0.181 (4.40-4.60) 0.064-0.072 (1.62-1.83) 0.155-0.167 (3.94-4.25) 0.059 (1.50) BSC 0.035-0.047 (0.89-1.20) L (SOT-89 ) AMS DRW# 042392 0.118 (3.00) BSC 0.014-0.019 (0.36-0.48) 0.017-0.022 (0.44-0.56) 0.084-0.090 (2.13-2.29) 0.055-0.063 (1.40-1.60) 0.014-0.017 (0.35-0.44)

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS500 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued).

5 LEAD SOT-23 PLASTIC PACKAGE (M1)

0.059-0.070 (1.50-1.75) 0.014-0.020 (0.350-0.50) 0.110-0.120 (2.794-3.048) 0.102-0.118 (2.60-3.00) 0.037 (0.95) TYP 0.075 (1.90) TYP 0.018-0.024 (0.457-0.610) 10° NOM 0.0035-0.0080 (0.090-0.20) (SOT-23-5 ) AMS DRW# 051001 0.036-0.051 (0.090-1.30) 0.003 (0.150) MAX 0.018-0.024 (0.457-0.610) 10° NOM