SL431A

SL431X AUK | Alldatasheet

Document overview

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Technical content

Features

• Programmable output voltage from 2.495V to 36V
• V oltage reference tolerance : ±0.5%, ±1.0%
• Cathode current capability of 1mA to 100mA

Ordering Information

Type NO. Marking Package Code SL431x SL431□ TO-92 Outline Dimensions ( Unit : mm ) 4.40~4.80 4.40~4.80 0.50 Max. 13.50~14.50 3.40~3.60 0.45 Max. 1.27 Typ. 1.27 Typ. 1 2 3 SSeemmiiccoonndduuccttoorr Symbol PIN Connections 1. Reference 2. Anode 3. Cathode Functional block diagram Cathode REF =2.495V Anode Reference V

A b s o l u t e m a x i m u m r a t i n g s [Ta=25℃] Characteristic Symbol Rating Unit Cathode to Anode voltage V KA 37 V Cathode current I K 150 mA Reference input current I ref 10 mA Power Dissipation P D 625 mW Junction Temperature T J 150 ℃ Operating temperature range T opr -40 ~ +85 ℃ Storage temperature range T stg -55 ~ +150 ℃ Recommended operating conditions Rating Characteristic Symbol Min. Max. Unit Cathode to Anode voltage V KA V ref 36 V Cathode current I K 1 100 mA Electrical Characteristics (Ta=25 , unless otherwise noted.)℃ Characteristic Symbol Condition Min. Typ. Max. Unit SL431B 2.482 2.508 Reference voltage (Fig.1) Vref V KA=Vref, IK=10mA SL431A 2.470 2.495 2.520 V Reference input voltage deviation over temperature (Fig.1, Note1,2) ∆Vref VKA=Vref , IK=10mA @ -40˚C ≤ Ta ≤ 85˚C - 7 30 mV ∆Vref △VKA=VKA(10V) –Vref - -1.2 -2.7 Ratio of delta reference input voltage to delta cathode voltage (Fig.2) ∆VKA IK=10mA Vref ≤ VKA ≤ 36V △VKA=VKA(36V)-VKA(10V) - -0.7 -2.0 mV/V Reference current (Fig.2) I ref IK=10mA Reference input current deviation over temperature (Fig.2, Note 1,2) ∆Iref IK=10mA R1=10KΩ, R2=∞ - 0.4 2.5 µ Α Minimum cathode current for regulation IK(MIN) V KA=Vref - 0.35 1.0 m Α Off-state cathode current (Fig.3) IK(off) V KA=36V , Vref=0V - 2.7 1000 nA Dynamic impedance (Fig.1, Note3) ZKA VKA=Vref, f ≤ 1.0KHz 1.0mA ≤ IK ≤ 100mA - 0.15 0.5 Ω

refKA R×I+)R R+1(×V=V Note. 1. Ambient temperature range: TLOW = -40℃, THigh = 85℃ 2. The deviation parameters △Vref and △Iref are defined as the difference betwee n the maximum value and minimum value obtained over the full operating ambient temperature range that applied. The average temperature coefficient of the reference input voltage, refVα is defined as: )10×)℃25=T(V V∆( =)℃ ppm(Vα a aref ref ref refVα can be positive or negative depending on whether V ref Min or Vref Max occurs at the lower ambient temperature, refer to Fig. 8 Example : △Vref = 30mV and the slope is positive, △Vref @ 25℃ = 2.495V △Ta = 125℃ 3. The dynamic impedance Z KA is defined as: K KA KA I∆ V∆=Ζ When the device is operating with two external resistors, R1 and R2, (refer to Fig.2) the total dynamic impedance of the circuit is given by: R+1(×Ζ=Ζ KA KA Fig. 1 Test circuit for VKA=Vref Fig. 2 Test circuit for VKA>Vref Fig. 3 Test circuit for IK(off) KAInput V IK(off) Iref Vref IK KAVInput IK ∆Vref = Vref Max – Vref Min ∆Ta = T2 – T1 Ambient Temperature KAVInput ℃/ppm96=125 10×)495.2 03.0( =)℃ ppm(Vα ref

Electrical Characteristics Curves (Continue) Fig.4 IK vs VKA (1) Fig.5 IK vs VKA (2) Fig.6 IK(off) vs VKA 100 -100 Cathode current IK[mA] Cathode V oltage VKA [V] 1 -1 -2 -25 150 Fig.7 ΔVref/ΔVKA vs Ta -75 -50

125 VKA=Vref

Ta=25˚C I Fig.8 Vref vs Ta Fig.9 PD vs Ta Reference input voltage Vref [V] Cathode V oltage VKA [V] 0.0 0.5 1.5 1.0 0 40 20 2.0 Off-state cathode current IK(off) [µA] 30 10 Vref=0V , Ta=25°C 50 0 0.0 -25 -0.2 7525 100 -0.1 -0.4 -0.3 -0.5 -50 Ratio of delta reference input voltage to delta cathode voltag ΔVref /ΔVKA [mV/V] Ambient Temperature Ta [˚C] Vref ≤ VKA ≤36V IK=10mA Ambient Temperature Ta [˚C] 10050 1000 600 12575 150 800 200 400 Power dissipation PD [mW] 0 -25 25 -50 1007550 Ambient Temperature Ta [˚C] Cathode current IK [mA] 0.0 1 2 1.0 3.0 -0.2 2.0 Cathode V oltage VKA [V] VKA=Vref, Ta=25˚C VKA=Vref , Iref=10mA Vref(min) Vref(typ) Vref(max) 2.545 2.505 2.525 2.485 2.465 2.445 4.0

Electrical Characteristics Curves Fig.10 Pulse Response Input and output voltage – V t – Time [μs ] 6 2 0 Ta=25˚C Fig.11 Test circuit for Fig. 10 Input Output A B f=10KHz GND 220Ω 50Ω Output Fig.12 Pulse Response (Magnify A of Fig.10) Fig.13 Pulse Response (Magnify B of Fig.10) Input and output voltage – V t – Time [μs ] 3 1 0 Input and output voltage – V t – Time [μs ] 3 1 0 Output Input Input Output Ta=25˚C Ta=25˚C

The AUK Corp. products are intended for the use as components in general electronic equipment (Office and co mmunication equipment, m easuring equipment, home appliance, etc.). Please make sure that you consult with us before you use these AUK Corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to th e welfare of human life(atomi c energy control, airplane, spaceship, transportation, co mbustion control, all types of safety device, etc.). AUK Corp. cannot accept liability to any damage which may occur in case these AUK Corp. products were used in the mentioned equi pments without prior consultation with AUK Corp.. Specifications mentioned in this publication are subject to change without notice.