KA3882 Datasheet, PDF (4/5 Pages) Fairchild Semiconductor – SMPS CONTROLLER

KA3882/3/4/5
SMPS CONTROLLER
ELECTRICAL CHARACTERISTICS(Continued)
` Î Î (VCC = 15V, RT = 10K , CT = 3.3nF, TA = 0 to +85 , unless otherwise specified)
Characteristic
Symbol
Test Conditions
Min
Typ
Max Unit
PWM SECTION
Maximum Duty Cycle
Minimum Duty Cycle
KA3882/3
94
DMAX
KA3884/5
47
DMIN
ï
ï
TOTAL STANDBY CURRENT
Start-Up Current
IST
ï
ï
Operating Supply Current
ICC
VPIN2 = VPIN3 = 0V
ï
VCC Zener Voltage
VZ
ICC = 25mA
ï
Adjust VCC above the start threshold bifore setting at 15V
NOTE 1. These parameters, although guaranteed, are not 100% tested in production.
L L ^{2. Parameter measured at trip point of latch with V2 = 0V.}
3. Gain defined as: GV = VPIN1 VPIN3(VPIN3 = 0 to 0.8V)
96
100
%
48
50
%
ï
0
%
0.2
0.4
mA
11
17
mA
29
ï
V