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Technical content

Programmable Shunt Regulator BL431 C 1 7 1 w w w . g m i c r o e l e c . c o m R e v . A 1

FEATURES

z Programmable output voltage to 36 volts z Low dynamic output impedance 0.20 typical z Sink current capability of 1.0 to 100mA z Equivalent full-range tem perature coefficient of 50ppm/℃ typical z Temperature compensated for operation over full rated Operating temperature range z Low output noise voltage SOT-23 z Fast turn-on response

ORDERING INFORMATION

Type No. Marking Package Code BL431 431 SOT-23 MAXIMUM RATING @ Ta=25℃ unless otherwise specified Parameter Symbol limits unit Cathode Voltage V KA 37 V Cathode current Range(Continuous) I KA -100 to +150 mA Reference Input Current Range I REF 0.05 to 10 mA Power dissipation P D 350 mW Thermal Resistance Junction–to–Ambient R θJA 350 ℃/W Thermal Resistance, Junction–to–Case R θJC 155 ℃/W Operating Junction Temperature T J 150 ℃ Operating temperature Range TOPR -25 to + 105 ℃ Storage temperature Range TSTG -65 to +150 ℃ Recommended Operating Conditions Parameter symbol Min Typ Max Unit Cathode Voltage V KA VREF - 36 V Cathode Current IKA 1.0 - 100 mA Pb Lead-free

Programmable Shunt Regulator BL431 C 1 7 1 w w w . g m i c r o e l e c . c o m R e v . A 2 ELECTRICAL CHARACTERISTICS @ Ta=25℃ unless otherwise specified Parameter symbol conditions Min. Typ. Max. unit Reference Input voltage V REF VKA=VREF,IKA=10mA 2.44 2.5 2.55 V Deviation of Reference Input Voltage Over-Temperature ∆VREF/ VKA=VREF,IKA=10mA, TMIN≤TA≤TMAX 4.5 17 mV ∆VKA=10V-VREF -10 -2.7 Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage REF/ ∆VKA IKA= 10mA ∆VKA=36V-10V -0.5 -2.0 mV/V Reverse Input current I REF IKA=10mA, R1=10KΩ,R2=∞ 1.5 4 μA Deviation of Reference Input Currrent Over Full Temperature Range REF/∆T IKA=10mA, R1=10KΩ,R2=∞ TA=Full Range 0.4 1.2 μA Minimun Cathode Current for Regulation IKA(MIN VKA= VREF 0.45 1.0 mA Off-Stage Cathode Current I KA(OFF) VKA=36V, VREF=0 0.05 1.0 μA Dynamic Impedance Z ZA VKA= VREF, IKA=1 to 100mA f≥1.0KHz 0.15 0.5 Ω

  • TMIN=-25℃,TMAX=+85℃ CLASSIFICATION OF Vref Rank 0.5% 1% 2%

Programmable Shunt Regulator BL431 C 1 7 1 w w w . g m i c r o e l e c . c o m R e v . A 3 TYPICAL CHARACTERISTICS @ Ta=25℃ unless otherwise specified

Programmable Shunt Regulator BL431 C 1 7 1 w w w . g m i c r o e l e c . c o m R e v . A 4 PACKAGE OUTLINE Plastic surface mounted package SOT-23 SOT-23 Dim Min Max A 2.70 3.10 B 1.10 1.50 C 1.0 Typical D 0.4 Typical E 0.35 0.48 G 1.80 2.00 H 0.02 0.1 J 0.1 Typical K 2.20 2.60 All Dimensions in mm A B C D E J H K G

Programmable Shunt Regulator BL431 C 1 7 1 w w w . g m i c r o e l e c . c o m R e v . A 5 SOLDERING FOOTPRINT Unit : mm

PACKAGE INFORMATION

BL431 SOT-23 3000/Tape&Reel 0.90 0.80 2.00 0.95 0.95