LINEAR INTEGRATED CIRCUIT

Transcription

1 ma LOW-DROPOUT VOLTAGE REGULATOR DESCRIPTION AV9/9 is a monolithic integrated voltage regulator with low dropout voltage, and low quiescent current. It includes many features that suitable for different applications. Available in -pin TO-9, DIP- and SOP- packages. FEATURES *High accuracy.,.,.,. or V fixed output for TO-9, SOP- package. *Extremely low quiescent current and dropout voltage. *Extremely tight load and line regulation. *Current and thermal limiting. *Very low temperature coefficient. *Logic controlled shutdown and error flag available for DIP and SOP package. *Output voltage programmable for DIP and SOP package. TO-9 SOP- DIP- APPLICATIONS *Battery powered equipment. *High efficient linear regulator down to.v. *Cellular phones.

2 PIN CONFIGURATIONS UTC AV9 OUTPUT INPUT TO-9 Plastic Package Bottom View OUTPUT INPUT SENSE SHUTDOWN AV9 9 FEEDBACK V TAP SOP- OR DIP- PACKAGE AV9 OUTPUT INPUT NC SHUTDOWN AV9 NC NC SOP- OR DIP- PACKAGE AV9 Fig.

3 BLOCK DIAGRAM UNRAGULATED DC FEEDBACK INPUT OUTPUT V ma MAX. SENSE FROM CMOS OR TTL SHUT DOWN. REF mv AMPLIFIER kω kω DETECTION COMPARATOR V TAP. µf KΩ TO CMOS OR TTL AV9 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL VALUE UNIT Supply Voltage Vcc -.~+ V Feedback Voltage Vfeedback -.~+ V Shutdown Voltage Vshutdown -.~+ V Storage Temperature Tstr -~+ C Operating Junction Temperature Tj -~+ C

4 ELECTRICAL CHARACTERISTICS (Tested at Tj= C, VIN=V, IL=µA and CL=µF, unless otherwise specified) PARAMETER PART NUMBER TEST CONDITION MIN TYP MAX UNIT Output Voltage AV9-. AV9-. TJ= C AV AV V AV AV9 (note ) Output Voltage AV9-. AV9-. AV9-. AV9-. AV9-. AV9 AV9-. AV9-. AV9-. AV9-. AV9-. AV9 - C TJ + C (note ) µa IL ma Tj<=Tj(max) (note ) Output Voltage Temperature Coefficient ppm/ C Line Regulation V VIN V... % Load Regulation µa IL ma... % Dropout Voltage Ground Current IL=µA IL=mA (note ) IL=µA IL=mA V V mv Dropout Ground Current VIN=.V,IL=µA µa Current Limit Vout= ma Output Noise Hz ~ KHz CL=µF CL=µF CL=.µF (Bypass=.µF pins to (utc9)) µa ma µv For LP9 -Pin version only Reference Voltage... V Reference Voltage (Note ).9. V Feedback pin Bias Current na Reference Voltage Temperature Coefficient ppm/ C Feedback Bias Current. na/ C temperature Coefficient Error Comparator Output Leakage Current VOH=V µa Output Low Voltage VIN=.V, IOL=µA mv Upper Threshold Voltage (Note ). %VO Lower Threshold Voltage (Note ). %VO Hysteresis (Note ) mv

5 PARAMETER PART NUMBER TEST CONDITION MIN TYP MAX UNIT Shutdown Input Input Logic Voltage. Low(Regulator ON). V High(Regulator OFF). Shutdown Pin Input Current Vshutdown=.V µa Vshutdown=V µa Regulator Output Current Shutdown Vshutdown V, VIN V, Vout=, Feedback pin tied to V Tap. µa Note : Additional conditions for -pin versions are feedback tied to V Tap an Output tied to Output Sense (Vout=V) and Vshutdown<=.V. Note :Dropout Voltage is defined as the input to output differential at which the output voltage drops mv below its nominal value measured at V differential. Note :Comparator thresholds are expressed in terms of percentage value of voltage output. Note :Vref Vout (Vin-V),.V Vin V, µa I L ma, T J T JMAX

6 APPLICATION CIRCUIT ( Ampere Low Dropout Regulator) CURRENT LIMIT SECTION +VIN=Vout+.V Ω.Ω N9 Ω UTC DH.MΩ +VIN kω +VOUT m A kω Ω UTC LP9 SD FB Vout Ω R R %.µf µf.µf Vout=.V*(+R/R) For V output use internal resistors.wire pin to and wire pin to +Vout Fig. Vin Vout Fig.

7 TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT VOLTAGE(V) Fig. Dropout Characteristics RL=kΩ RL=Ω INPUT VOLTAGE(V) INPUT CURRENT(mA) Fig. Input Current RL=Ω 9 9 INPUT VOLTAGE(V) DROPOUT VOLTAGE(mV) IL=mA > Fig. Dropout Voltage IL=µA Fig. Ground Pin Current Fig. Ground Pin Current Fig. 9 Shutdown Threshold Voltage. QUIESCENT CURRENT( m A) SHORT CIRCUIT CURRENT(mA) 9 VIN=V IL=µA Fig. Short Circuit Current QUIESCENT CURRENT(mA) Dropout Voltage(mV) V IN=V IL=mA Fig. Dropout Voltage. OUTPUT CURRENT(mA) Shutdown Threshold Voltage(V) TEMPERATURE( C) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.