SL432xSF Semiconductor Programmable Voltage Reference Description The SL432 series are 3-terminal precision shunt regulators that are programmable over a wide voltage range of 1.24V to 16V with ±0.5%, ±1.0%, ±2.0% tolerance. The SL432 series have a low dynamic impedance of 0.25Ω. These features make the SL432 series an excellent replacement for zener diodes in numerous applications circuits that require a precision reference voltage. Features • Programmable output voltage from 1.24V to 16V • Voltage reference tolerance : ±0.5%, ±1.0%, ±2.0% • Cathode current capability of 80 ㎂ to 30mA Ordering Information Type NO. Marking Package Code SL432xSF 42□ SOT-23F □: Grade => 3:±2% , A:±1% , B:±0.5% Outline Dimensions ( Unit : mm ) Symbol 2.30~2.50 1.50~1.70 1.90 Typ. 3 Functional block diagram 0.45 Max. 2 Cathode(K) Reference(R) + 0.80~1.00 - VREF =1.24V Anode(A) PIN Connections 1. Reference 2. Cathode 3. Anode 0.20 Max. 0.10 Max. 2.80~3.00 1 KSD-I5C003-002 1 SL432xSF Absolute maximum ratings [Ta=25℃] Characteristic Symbol Rating Unit VKA 18 V Cathode current IK 30 mA Reference input current Iref 3 mA Power Dissipation PD* 350 mW Junction Temperature TJ 150 ℃ Operating temperature range Topr -40 ~ +85 ℃ Storage temperature range Tstg -55 ~ +150 ℃ Cathode to Anode voltage * With PCB(8×8mm copper area) at glass epoxy board(t=1.7mm, area : 20×20mm) Recommended operating conditions Characteristic Rating Symbol Cathode to Anode voltage Cathode current Unit Min. Max. VKA Vref 16 V IK 0.1 25 mA Electrical Characteristics (Ta=25℃, unless otherwise noted.) Characteristic Reference voltage (Fig.1) Reference input voltage deviation over temperature (Fig.1, Note1,2) Ratio of delta reference input voltage to delta cathode voltage (Fig.2) Reference current (Fig.2) Symbol Vref ∆Vref ∆Vref ∆VKA Iref Condition VKA=Vref, IK=10mA Min. Typ. Max. SL432BSF 1.234 SL432ASF 1.228 SL432SF 1.215 VKA=Vref, IK=10mA @ -40˚C ≤ Ta ≤ 85˚C Unit 1.246 1.240 1.252 V 1.265 - 10 20 mV - -1.0 -2.7 mV/V IK=10mA R1=10KΩ, R2=∞ - 1.0 1.5 µΑ IK=10mA R1=10KΩ, R2=∞ @ -40˚C ≤ Ta ≤ 85˚C - 0.04 0.08 µΑ IK=10mA Vref ≤ VKA ≤ 16V △Vref=Vref (16V)-Vref △VKA=VKA(16V)-Vref Reference input current deviation over temperature (Fig.2, Note 1,2) ∆Iref Minimum cathode current for regulation IK(MIN) VKA=Vref - 80 100 µΑ Off-state cathode current (Fig.3) IK(off) VKA=16V, Vref=0V - 5 50 nA Dynamic impedance (Fig.1, Note3) ZKA VKA=Vref, f ≤ 1.0KHz 0.1mA ≤ IK ≤ 25mA - 0.25 0.4 Ω KSD-I5C003-002 2 SL432xSF Fig. 2 Test circuit for VKA>Vref Fig. 1 Test circuit for VKA=Vref Input VKA Input IK VKA Fig. 3 Test circuit for IK(off) Input IK(off) IK R1 VKA Iref R2 V KA = V ref × (1 + R1 ) + I ref × R 1 R2 Note. 1. Ambient temperature range: TLOW = -40℃, THigh = 85℃ 2. The deviation parameters △Vref and △Iref are defined as the difference between the maximum value and minimum value obtained over the full operating ambient temperature range that applied. ∆Vref = Vref Max – Vref Min ∆Ta = T2 – T1 Ambient Temperature The average temperature coefficient of the reference input voltage, αVref is defined as: ∆V ref × 10 6 ) ppm V ref (Ta = 25℃) α V ref ( )= ℃ Ta ( αVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature, refer to Fig. 8 Example : △Vref = 10mV and the slope is positive, △Vref @ 25℃ = 1.24V △Ta = 125℃ 0.010 ( ) × 10 6 ppm 1.241 αVref ( )= = 65ppm / ℃ ℃ 125 3. The dynamic impedance ZKA is defined as: Ζ KA = ∆VKA ∆I K 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: Ζ KA ' = Ζ KA × (1 + KSD-I5C003-002 R1 ) R2 3 SL432xSF Electrical Characteristics Curves (Continue) Fig.4 IK vs VKA (1) Fig.5 IK vs VKA (2) 30 300 Cathode current IKA [µA] Cathode current IK [mA] VKA=Vref Ta=25°C 20 10 0 -10 0 0.5 1.5 1.0 0 -10 -1 -0.5 0 0.5 1.0 1.5 Fig.7 ΔVref/ΔVKA vs Ta I 0.1 0.0 4 12 8 16 20 Vref ≤ VKA ≤ 16V, IK=10mA -0.1 -0.2 -0.3 -0.4 -0.5 -50 -25 0 25 50 75 Ambient Temperature Ta [˚C] Fig.8 Vref vs Ta Fig.9 PD vs Ta 500 VKA=Vref , IK=10mA 1.28 Vref(max) 1.26 Vref(typ) 1.24 Vref(min) 1.22 -25 0 25 50 75 100 2.0 0.0 Cathode Voltage VKA [V] Power dissipation PD [mW] Reference input voltage Vref [V] 50 Fig.6 I K(off) vs VKA 0.2 1.20 -50 100 Cathode Voltage VKA [V] 0.3 1.30 150 Cathode Voltage VKA [V] Vref=0V, Ta=25°C 0 Ta=25°C 200 -50 2.0 cathode voltage ΔVref /ΔVKA [mV/V] 0.4 -0.5 Ratio of delta reference input voltage to delta Off-state cathode current IK(off) [µA] -1 VKA=Vref 250 100 With PCB (8×8mm copper area) at glass epoxy board (t=1.7mm,area=20×20mm) 400 300 200 100 0 0 25 50 75 100 125 150 Ambient Temperature Ta [˚C] Ambient Temperature Ta [˚C] KSD-I5C003-002 4 SL432xSF Electrical Characteristics Curves Fig.10 Stability Boundary Conditions Output IK R1 ㎃ CL R2 GND 0 Unstable Regions VKA R1 [KΩ] R2 [KΩ] A, B Vref 0 ∞ A 10V 10 1.415 Fig.11 Test circuit for Fig. 10 ㎌ The AUK Corp. products are intended for the use as components in general electronic equipment (Office and communication equipment, measuring 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 the welfare of human life(atomic energy control, airplane, spaceship, transportation, combustion 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 equipments without prior consultation with AUK Corp.. Specifications mentioned in this publication are subject to change without notice. KSD-I5C003-002 5