Datasheet ZR431 (Diodes) - 2

ZR431 ADJUSTABLE PRECISION ZENER SHUNT REGULATOR Absolute Maximum Ratings (Note 2) Symbol Parameter Rating Unit
VZ Cathode Voltage 20 V IZ Cathode Current 150 mA TA Operating Temperature -40 to +85 °C
N
TST Storage Temperature -55 to +125 °C
O
SOT23 330 mW PD Power Dissipation (Notes 3, 4) SOT223 2 W
ATI
Notes: 2. Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings, for extended periods, may reduce device reliability. Unless otherwise stated voltages specified are relative to the ANODE pin.
RM
3. TJ, max =150°C.
O
4. Ratings apply to ambient temperature at 25°C.
F N Recommended Operating Conditions (TA = 25
°
C) CE I Symbol Parameter Min Max Unit
VZ Cathode Voltage VREF 20 V IZ Cathode Current 0.05 100 mA
ADVAN Electrical Characteristics (TA = 25
°
C unless otherwise specified) Symbol Parameter Test Conditions Min Typ. Max Unit
Reference voltage (Note 5) 2% 2.45 2.50 2.55 VREF 1 % IL = 10mA (Fig 1), VZ = VREF 2.475 2.50 2.525 V 0.5% 2.487 2.50 2.513 Deviation of reference input voltage IL = 10mA, VZ = VREF VDEV 8.0 17 mV over temperature TA = Full range (Fig 1) VZ from VREF to 10V -1.85 -2.7 Δ Ratio of the change in reference VREF IZ = 10mA (fig 2) voltage to the change in cathode mV/V ΔVZ V voltage Z from 10V to 20V -1.0 -2.0 IZ = 10mA (Fig 2) IREF Reference input current R1 = 10k, R2 = O/C, IL = 10mA (Fig 2) 0.12 1.0 μA Deviation of reference input current R1 = 10k, R2 = O/C, I Δ L = 10mA IREF 0.04 0.2 μA over temperature TA = Full range (Fig 2) Minimum cathode current for IZ(MIN) V regulation Z = VREF (Fig 1) 35 50 µA IZ(OFF) Off-state current VZ = 20V, VREF = 0V (Fig 3) 0.1 μA RZ Dynamic output impedance VZ = VREF (Fig 1), f = 0Hz 0.75 Ω Note 5: 0.5% and 1% SOT23 only For definitions of reference voltage temperature coefficient and dynamic output impedance see NOTES following DC TEST CIRCUITS ZR431 2 of 9 October 2011 Document number: DS33255 Rev. 6 - 2
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