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SL431A 데이터시트(PDF) 3 Page - AUK corp |
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SL431A 데이터시트(HTML) 3 Page - AUK corp |
3 / 6 page KSD-I0B003-000 3 SL431xM 1 ref 2 1 ref KA 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 between 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, ref V α is defined as: T ∆ ) 10 × ) ℃ 25 = T ( V V ∆ ( = ) ℃ ppm ( V α a 6 a ref ref ref ref V α 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 = 30mV and the slope is positive, △ Vref @ 25℃ = 2.495V △ Ta = 125℃ 3. The dynamic impedance ZKA 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 R + 1 ( × Ζ = Ζ 2 1 KA ' KA Fig. 1 Test circuit for VKA=Vref Fig. 2 Test circuit for VKA>Vref Fig. 3 Test circuit for IK(off) KA Input R1 R2 V IK(off) Iref Vref IK KA V Input IK ∆Vref = Vref Max – Vref Min ∆Ta = T2 – T1 Ambient Temperature KA V Input ℃ / ppm 96 = 125 10 × ) 495 . 2 03 . 0 ( = ) ℃ ppm ( V α 6 ref |
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