Datasheet FAN431A (ON Semiconductor) - 4

FAN Recommended Operating Conditions 43
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
1A
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
—
recommend exceeding them or designing to Absolute Maximum Ratings.
P Symbol Parameter Min. Max. Unit rogr
VKA Cathode Voltage VREF 36 V
am
IKA Cathode Current 1.0 100 mA
m able S Electrical Characteristics
(5)
hunt
Values are at TA = 25°C unless otherwise noted.
R FAN431A e Symbol Parameter Conditions Unit gul Min. Typ. Max.
V
a
REF Reference Input Voltage VKA = VREF, IKA = 10 mA 2.470 2.495 2.520 V
tor
Deviation of Reference V VKA = VREF, IKA = 10 mA, REF/ T Input Voltage Over- 4.5 17.0 mV Temperature TMIN TA TMAX Ratio of Change in VKA = 10V - VREF -1.0 -2.7 VREF/ Reference Input Voltage V IKA = 10 mA mV/V KA to Change in Cathode VKA = 36 V - 10 V -0.5 -2.0 Voltage IREF Reference Input Current IKA = 10 mA, R1 = 10 k , R2 = 1.5 4.0 A Deviation of Reference I IKA = 10 mA, R1 = 10 k , R2 = REF/ T Input Current Over Full Temperature Range TA = Full Range 0.4 1.2 A I Minimum Cathode KA(MIN) Current for Regulation VKA = VREF 0.45 1.00 mA I Off-Stage Cathode KA(OFF) Current VKA = 36 V, VREF = 0 0.05 1.00 A ZKA Dynamic Impedance VKA = VREF, IKA = 1 to 100 mA, f 1.0 kHz 0.15 0.50
Note:
5. TMIN = -25C, TMAX = +85C. © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN431A Rev. 3.4 3