Fixed-Frequency, Full-Bridge CCFL Inverter

Controller

6

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

HF Input-Frequency Range

20

100

kHz

HSYNC Input Frequency Range

190

460

kHz

HFCK Input Frequency Range

120

600

kHz

DPWM Chopping Frequency

Ω

202

215

Hz

LF Input Frequency Range

80

300

Hz

LSYNC Input Frequency Range

Ω

120

280

Hz

CNTL Minimum Duty Cycle

Threshold

0.21

0.26

V

CNTL Maximum Duty Cycle

Threshold

1.9

2.1

V

CNTL Input Threshold

Slave mode

4.2

4.9

mV

Note 1: Actual switching frequency is 1/6 of the HFCK.

Note 2: -40°C specifications are guaranteed by design, not production tested.