RangeMAX™

LX1688

Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 4

Copyright

© 2001

Rev. 1.2, 2006-03-09

Multiple Lamp CCFL Controller

TM

®

ELECTRICAL CHA RACTERISTICS (CONTINUED)

LX1688

Parameter

Symbol

Test Conditions

Min

Typ.

Max

Units

STRIKE AND RAMP GENERATOR (CONTINUED)

Minimum PHA_SYNC-pin output current

10

Minimum RMP_RST-pin output current

10

mA

Minimum A_SYNC output pulse duty-cycle

49

50

%

Minimum A_SYNC input pulse duty-cycle

48

50

%

Minimum RMP_RST output pulse duty-cycle

10

17

%

Minimum RMP_RST input pulse duty-cycle

5

%

OUTPUT BUFFER

Output Sink Current

100

Output Source Current

100

Output Sink Current

50

Output Source Current

50

Output Sink Current

100

PWM

VSNS threshold voltage

1.2

1.25

1.3

V

VCOMP Discharge Current

4

IAMP transconductance

100

200

500

µmho

VAMP, IAMP output source current

75

µA

VAMP, IAMP output sink current

75

µA

ICOMP discharge current

10

VAMP transconductance

200

500

800

µmho

ICOMP-to-output propagation delay

1100

nS

BIAS

Voltage at Pin I_R

0.95

1.05

V

Pin I_R max. source current

50

µA

Power-on Reset Pulse Width

31

mS

10

25

1

15

µA

GENERAL

Operating Current

5.5

8

mA

Output buffer operating current

2

4

mA

ENABLE logic threshold

0.8

1.7

2.4

V

ENABLE threshold hysteresis

0.2

V

20

50

Sleep-mode current (see table-1 for Pin

ENABLE polarity)

20

50

20

300

VDD_P Leakage in Sleep Mode

20

300

µA

UVLO threshold

Rising turn-on threshold

2.6

2.8

2.9

V

UVLO hysteresis

Falling turn-off hysteresis

190

mV