LOW DROPOUT DUAL VOLTAGE REGULATOR
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1 The LM293 is a dual positive.0 low dropout voltage regulator, designed for standby power systems. The main output is capable of supplying 70 ma for microprocessor power, and can be turned on and off by the switch/reset input. The other output is dedicated for standby operation of volatile memory, and is capable of supplying up to 10 ma loads. The total device features a low quiescent current of 3.0 ma or less when supplying 10 ma from the standby output. This part was designed for harsh automotive environments and is therefore immune to many input supply voltage problems such as reverse battery (12 ), double battery (+24 ), and load dump transients (+60 ). Two Regulated.0 Outputs Main Output Current in Excess of 70 ma On/Off Control of Main Output Standby Output Current in Excess of 10 ma Low Input/Output Differential of Less than 0.6 at 00 ma Short Circuit Current Limiting Internal Thermal Shutdown Low oltage Indicator Output Designed for Automotive Environment Including Reverse Battery Protection Double Battery Protection Load Dump Protection Reverse Transient Protection Economical Lead TO220 Package with Two Optional Leadforms Also Available in Surface Mount D 2 PAK Package LOW DROPOUT DUAL OLTAGE REGULATOR TH SUFFIX CASE 314A 1 SEMICONDUCTOR TECHNICAL DATA 1 T SUFFIX CASE 314B T SUFFIX CASE 314D 1 Device LM293D2T LM293T LM293TH LM293T ORDERING INFORMATION Operating Temperature Range T J = 40 to +12 C Package Surface Mount Plastic Power Horizontal Mount ertical Mount 1 D2T SUFFIX CASE 936A (D 2 PAK) Semiconductor Components Industries, LLC, 2001 April, 2001 Rev. 2 1 Publication Order Number: LM293/D
2 Typical Application Circuit µ This device contains 29 active transistors. MAXIMUM RATINGS Rating Symbol alue Unit Input oltage Continuous I 60 dc Transient Reverse Polarity Input oltage 1.0% Duty Cycle, τ 100 ms I (τ) 0 pk Switch/Reset Input Current I in.0 ma Power Dissipation Case 314A, 314B and 314D (TO220 Type) T A = 2 C P D Internally Limited W Thermal Resistance, JunctiontoAmbient R θja 6 C/W Thermal Resistance, JunctiontoCase R θjc.0 C/W Case 936A (D 2 PAK) T A = 2 C P D Internally Limited W Thermal Resistance, JunctiontoAmbient R θja Per Figure 1 C/W Thermal Resistance, JunctiontoCase R θjc.0 C/W Operating Junction Temperature Range T J 40 to +10 C Storage Temperature Range T stg 6 to +10 C ELECTRICAL CHARACTERISTICS ( in = 14, I O = 00 ma, I stby = 0 ma, C O = 10 µf, C stby = 10 µf, T J = 2 C [Note 1].) Characteristic Symbol Min Typ Max Unit MAIN OUTPUT Output oltage ( in = 6.0 to 26, I O =.0 ma to 00 ma, T J = 40 to +12 C) O Line Regulation in = 9.0 to 16, I O =.0 ma in = 6.0 to 26, I O =.0 ma Reg line m Load Regulation (I O =.0 ma to 00 ma) Reg load 10 0 m Output Impedance I O = 00 madc and 10 marms, f = 100 Hz to 10 khz Z O 200 mω Output Noise oltage (f = 10 Hz to 100 khz) n 100 µrms Long Term Stability S 20 m/khr 2
3 ELECTRICAL CHARACTERISTICS ( in = 14, I O = 00 ma, I stby = 0 ma, C O = 10 µf, C stby = 10 µf, T J = 2 C [Note 1].) Characteristic Symbol Min Typ Max Unit MAIN OUTPUT (continued) Ripple Rejection (f = 120 Hz) RR 66 db Dropout oltage I O = 00 ma I O = 70 ma I O Short Circuit Current Limit I SC A Overoltage Shutdown Threshold th(o) SWITCH/RESET Output Sink Current ( OL = 1.2 ) I Sink.0 ma Output oltage (R on/off = 20 kω) Low State, in = 4.0 High State, in = 14 OL OH 4. Output PullUp Resistor, On / Off (Note 2) R on/off kω Output oltage with Reverse Polarity Input ( in = 1, R L = 10 Ω) O ELECTRICAL CHARACTERISTICS ( in = 14, I O = 0 ma, I stby = 10 ma, C O = 10 µf, C stby = 10 µf, T J = 2 C [Note 1].) Characteristic Symbol Min Typ Max Unit STANDBY OUTPUT Output oltage ( in = 6.0 to 26, I stby = 1.0 ma to 10 ma, T J = 40 to +12 C) O(stby) Tracking oltage O O(stby) m Line Regulation ( in = 6.0 to 26 ) Reg line m Load Regulation (I stby = 1.0 ma to 10 ma) Reg load 10 0 m Output Impedance I (stby) = 10 madc and 1.0 marms, f = 100 Hz to 10 khz Z O(stby) 1.0 Ω Output Noise oltage (f = 10 Hz to 100 khz) n 300 µrms Long Term Stability S 20 m/khr Ripple Rejection (f = 120 Hz) RR 66 db Dropout oltage (I stby = 10 ma) I O(stby) Short Circuit Current Limit I SC 2 70 ma Output oltage with Reverse Polarity Input in = 1, R L = 10 Ω Output oltage with Maximum Positive Input in = 60, R L = 10 Ω O O(max) TOTAL DEICE Bias Current I O = 10 ma, I stby = 0 ma I O = 00 ma, I stby = 0 ma I O = 70 ma, I stby = 0 ma Main Output Off, I stby = 10 ma I B ma NOTES: 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 2. The maximum switch/reset current must not exceed.0 ma. 3
4 TYPICAL CIRCUIT WAEFORMS θ θ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ Figure 1. D 2 PAK Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length 4
5 PACKAGE DIMENSIONS TH SUFFIX CASE 314A03 ISSUE E Q U X D B P A G OPTIONAL CHAMFER L E C T S F K X J T SUFFIX CASE 314B0 ISSUE J Q U F K X D B P G A OPTIONAL CHAMFER X J S L E N C H T W
6 PACKAGE DIMENSIONS T SUFFIX CASE 314D04 ISSUE E Q B U K D PL A G L E J H C T K B D C A G S OPTIONAL CHAMFER H N R D2T SUFFIX CASE 936A02 (D 2 PAK) ISSUE B T E M L P TERMINAL 6 U 6
7 Notes 7
8 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Typical parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. PUBLICATION ORDERING INFORMATION NORTH AMERICA Literature Fulfillment: Literature Distribution Center for ON Semiconductor P.O. Box 163, Denver, Colorado USA Phone: or Toll Free USA/Canada Fax: or Toll Free USA/Canada ONlit@hibbertco.com Fax Response Line: or Toll Free USA/Canada N. American Technical Support: Toll Free USA/Canada EUROPE: LDC for ON Semiconductor European Support German Phone: (+1) (MonFri 2:30pm to 7:00pm CET) ONlitgerman@hibbertco.com French Phone: (+1) (MonFri 2:00pm to 7:00pm CET) ONlitfrench@hibbertco.com English Phone: (+1) (MonFri 12:00pm to :00pm GMT) ONlit@hibbertco.com EUROPEAN TOLLFREE ACCESS*: *Available from Germany, France, Italy, UK, Ireland CENTRAL/SOUTH AMERICA: Spanish Phone: (MonFri 8:00am to :00pm MST) ONlitspanish@hibbertco.com TollFree from Mexico: Dial for Access then Dial ASIA/PACIFIC: LDC for ON Semiconductor Asia Support Phone: (TueFri 9:00am to 1:00pm, Hong Kong Time) Toll Free from Hong Kong & Singapore: ONlitasia@hibbertco.com JAPAN: ON Semiconductor, Japan Customer Focus Center 4321 NishiGotanda, Shinagawaku, Tokyo, Japan Phone: r142@onsemi.com ON Semiconductor Website: For additional information, please contact your local Sales Representative. 8 LM293/D
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