FA7764 Datasheet, PDF (6/18 Pages) Fuji Electric – FUJI Power Supply Control IC

FA7764
6. Ratings and characteristics
(1)Absolute maximum rating
Following data are subject to change without notice. When using this IC, be sure to obtain the latest
specifications.
*The items except operation junction temperature, operating ambient temperature, and storage temperature.
Item
Symbol Condition
Rating
Units
Power Supply voltage (VCC)
IN input voltage
CREG input voltage
RT input voltage
V_CC
V_VIN
V_CREG
V_RT
50
V
-0.3 to 4.0
V
-0.3 to 4.0
V
-0.3 to 4.0
V
VBIAS input voltage
V_VBIAS
-0.3 to 6.0
V
ENB input voltage
Power dissipation *1
SP-8(E-Pad)
DIP-8
Operation junction temperature
Operation ambient temperature
Storage temperature
V_ENB
P_d
T_J
T_OPR
T_STG
Ta≦25°C
-0.3 to 4.0
V
3.9
W
1.39
+150
°C
-40 to +85
°C
-50 to +150
°C
The characteristic of power dissipation
5
4
SOP-8(E-Pad)
3
2
DIP-8
1
0
-40 -20 0 20 40 60 80 100 120 140 160
Ambient temperature Ta[℃]
*1 This IC should be used less than the total power dissipation (Pd).
This Pd is based on the condition that this IC is mounted on 4-multi-layer PCB(the size is 50mm×40mm)
and the Exposed pad (E-pad, in the reverse side of the IC package) is connected to the ground at Ta=25
degrees.
Over 25 degrees, delating the Pd as follows:
Thermal resistance θj-a(Junction to Ambient） SOP-8(E-Pad):32 degrees/W, DIP-8:95 degree/W
θj-c(Junction to Case）
SOP-8(E-Pad):16.5 degrees/W, DIP-8:55 degree/W
θ_EPAD-c(E-pad to Case）
SOP-8(E-Pad):6 degrees/W
Note) This IC should be used on the condition that the junction temperature is less than 150 degrees, based
on the total power dissipation.
Also this IC should be examined that the junction temperature is actually less than 150degrees by
measuring the surface temperature of this package.
Fuji Electric Systems Co., Ltd.
AN-059E Rev.1.0
6
June.2010
http://www.fujielectric.co.jp/fdt/scd/