ISSUED DATE :2003/05/20
REVISED DATE :2004/09/30B
Under-Voltage Lockout Section
Startup Threshold
PWM Section
Maximum Duty Cycle
Minimum Duty Cycle
Total Device
Power Startup Supply Current
Power Operating Supply Current
Power Supply Zener Voltage
I
CC
+I
C
I
CC
+I
C
Vz
V
CC
=14V
Note 2
I
CC=
25mA
30
0.3
12
36
0.5
17
mA
mA
V
DC(
MAX
)
DC(
MIN
)
94
96
0
%
%
Vth
14.5
8.5
16
10
17.5
11.5
V
V
Min. Operating Voltage After Turn-on
(VCC)
V
CC(min)
Note 1: Maximum Package power dissipation limits must be observed.
Note 2: Adject Vcc above the Startup threshold before setting to 15V.
Note 3: This parameter is measured at the latch trip point with VFB=0V.
Note 4: Comparator gain is defined as::
AV
V Output Compensation
V Current Sense Input
Characteristics Curve
3/9
GTM [ GTM CORPORATION ]
