PKS603-607

Rev. I 02/07

16

NOTES:

A. Total current consumption is the sum of I

switching) and the sum of I

B. Since the output MOSFET is switching, it is difficult to isolate the switching current from the supply current at the

DRAIN. An alternative is to measure the BYPASS pin current at 6.1 V.

C. See Typical Performance Characteristics section for BYPASS pin startup charging waveform.

D. BYPASS pin is externally supplied (bias winding).

E. For current limit at other di/dt values, refer to Figure 25.

F. This parameter is derived from characterization.

G. This parameter is derived from the change in current limit measured at 1X and 4X of the di/dt shown in the I

LIMIT

specification.

H. I

temperature. I

consumption calculations.

I. Breakdown voltage may be checked against minimum BV

to but not exceeding minimum BV

J. Auto-restart on time has the same temperature characteristics as the oscillator (inversely proportional to

frequency). Auto-restart on time is extended during startup and certain fault conditions because the controller

reduces its oscillator clock frequency to prevent excessive drain currents. If excessive drain currents are still

occuring half way through the auto-restart on time, output MOSFET switching is disabled for the remainder of that

auto-restart on time episode (if the line is not sensed) or the supply latches off (if the line is sensed and adequate

line voltage is present).

K. Only applicable if no UV resistor is present at the EN/UV pin. 5 s applies only if the preceding switching auto-

restart event did not result in EN/UV pin going low. In that event, the first auto-restart off-time is 150 ms.

Parameter

Symbol

Conditions

SOURCE = 0 V; T

See Figure 18

(Unless Otherwise Specified)

Min

Typ

Max

Units

OUTPUT (cont.)

Auto-Restart

ON Time

t

AR

T

See Note J

30

ms

Auto-Restart

OFF Time

t

AROFF

See Note K

5

s