CORPORATION

3/9

ISSUED DATE :2004/04/19

REVISED DATE :2004/09/30B

AV

V Output Compensation

V Current Sense Input

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::

Characteristics Curve

Under-Voltage Lockout Section

Startup Threshold

Vth

7.8

8.4

9.0

V

7.0

7.6

8.2

V

PWM Section

Maximum Duty Cycle

94

96

%

Minimum Duty Cycle

0

%

Total Device

Power Startup Supply Current

0.2

0.3

mA

Power Operating Supply Current

Note 2

12

17

mA

Power Supply Zener Voltage

Vz

30

36

V