Datasheet FAN431A (ON Semiconductor) - 3

FAN Block Diagram 431A —
+ CATHODE REFERENCE
P r
-
ogra
2.5 V
m
ref
m able S
ANODE
hunt
CATHODE (K)
Re
REFERENCE (R)
gul ator
ANODE(A)
Figure 1. Block Diagram Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted.
Symbol Parameter Value Unit
VKA Cathode Voltage 37 V IKA Cathode current Range (Continuous) -100 to +150 mA IREF Reference Input Current Range -0.05 to +10.00 mA R Thermal Resistance, Junction to Ambient(1,2) JA Z Suffix Package 132 C/W P Power Dissipation(3,4) D Z Suffix Package 940 mW TJ Junction Temperature 150 C TOPR Operating Temperature Range -25 to +85 C TSTG Storage Temperature Range -65 to +150 C
Notes:
1. Thermal resistance test board Size: 1.6 mm x 76.2 mm x 114.3 mm (1S0P) JEDEC Standard: JESD51-3, JESD51-7. 2. Assume no ambient airflow. 3. TJMAX = 150C, Ratings apply to ambient temperature at 25C. 4. Power dissipation calculation: PD = (TJ - TA) / R JA. © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN431A Rev. 3.4 2