UTC UNISONIC TECHNOLOGIES CO., LTD. 1 LINEAR INTEGRATED CIRCUIT PROGRAMMABLE PRECISION REFERENCE

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1 PROGRAMMABLE PRECISION DESCRIPTION The is a three-terminal adjustable regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between Vref(approximately.V) and V with two external resistors. It provides very wide applications, including shunt regulator, series regulator, switching regulator, voltage reference and others. SOT-89 MSOP-8 TO-9 SOP-8 FEATURES *Programmable output ltage to V. *Low dynamic output impedance.ω. *Sink current capability of. to ma. *Equivalent full-range temperature coefficient of ppm/ C typical for operation over full rated operating temperature range. SOT- 4 SOT- SOP-8 : Cathode;,,,: Anode 8: Ref. ; 4,: N/C MSOP-8 : Cathode ; : Anode ; 8: Ref.,,4,,: N/C TO-9 : Ref. ; : Anode ; : Cathode SOT-89 : Ref. ; : Anode ; : Cathode SOT- : Cathode; : Ref. ; : Anode SOT-,: N/C; : Cathode; 4: Ref.; : Anode BLOCK DIAGRAM CATHODE (R) CATHODE (K).V Vref ANODE(A) ANODE UTC UNISONIC TECHNOLOGIES CO., LTD. QW-R-4,C

2 ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)) PARAMETER SYMBOL VALUE UNIT Cathode ltage V Cathode Current Range (Continuous) IKA - ~ + ma Reference Input Current Range Iref -. ~ + ma Operating Junction Temperature Tj C Operating Ambient Temperature Topr ~ + C Storage Temperature Tstg - ~ + C RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL MIN TYP MAX UNIT Cathode ltage V Cathode Current IKA ma ELECTRICAL CHARACTERISTICS (Ta= C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Reference Input ltage Vref =,IKA=mA.4.. V Deviation of reference Input ltage Over temperature (note ) Ratio of Change in Reference Input ltage to the Change in Cathode ltage Vref/ T Vref / IKA=mA =,IKA=mA TMIN<=TA<=TMAX =V~ =V~V 4. mv Reference Input Current Iref IKA=mA,R=kΩ,R=. 4 µa Deviation of Reference Input Current Iref/ T IKA=mA,R=kΩ,R=.4. µa Over Full Temperature Range TA=full Temperature Minimum Cathode Current for IKA(min) =.4. ma Regulation Off-State Cathode Current IKA(OFF) =V, =.. µa Dynamic Impedance ZKA =,IKA= to ma.. Ω f.khz Note:TMIN= C,TMAX=+ C mv/v Remark: Reference voltage of ±% tolerance is also available per customer s request. UTC UNISONIC TECHNOLOGIES CO., LTD. QW-R-4,C

3 TYPICAL PERFORMANCE CHARACTERISTICS Fig Cathode Current Vs Cathode ltage 8 Fig Cathode Current Vs Cathode ltage Cathode Current (ma) - V KA= Cathode Current (ma) 4 V KA= IKA(min) Cathode ltage (V) Cathode ltage (V) Fig Change in Reference Input ltage Vs Cathode voltage Fig 4 Pulse Response Change In Reference INput ltage (mv) IKA=mA Input and Output ltage (V) Cathode ltage (V) 4 Time (ms) Impedance ( [), ) IKA=mA to ma Fig Dynamic Impedance Vs Frequency Fig Small Signal ltage Amplification Vs Frequency ltage Amplification (db) 4 IKA=mA - 4 Frequency (Hz) - 4 Frequency (Hz) UTC UNISONIC TECHNOLOGIES CO., LTD. QW-R-4,C

4 TEST CIRCUIT IKA IKA IKA(OFF) R IREF R =*(+R/R)+IREF*R Fig Test Circuit For = Fig 8 Test Circuit for >= Fig 9 Test Circuit For IKA(OFF) APPLICATION CIRCUIT R IN UTC8 OUT COMMON R R R R R =(+R/R)* =(+R/R)* =(+R/R)* Fig Shutdown Regulator Fig Output Control of a Three Fig Higher-current Shunt Regulator -Terminal Fixed Regulator Io Io RCL Rs Rs IO=/RS RS=/RCL Fig Constant-current Sink Fig 4 Current Limiting or Current Source UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R-4,C

5 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. UTC UNISONIC TECHNOLOGIES CO., LTD. QW-R-4,C