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
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
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) 4 - -4 4 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
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
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