Digitally Controlled CCFL Backlight

Power Supplies

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3

ELECTRICAL CHARACTERISTICS (continued)

GND < OTP < VL

Guaranteed monotonic

OTP rising

CONDITIONS

MAX1610 LOGIC LEVELS

mV

500

CS Overcurrent Cutoff Threshold

µA

-1

1

OTP Input Bias Current

mV

-20

20

OTP Voltage Trip Point

OPEN AND SHORTED TUBE PROTECTION

µA

20

CC Source Current

µA

80

D/A at full scale

CC Sink Current

µmho

85

CSAV to CC Voltage-to-Current Converter

Transconductance

CC = 2V, CSAV = 1V, D/A at 1LSB

DAC Resolution

Bits

5

CC = 2V, CSAV = 1V, D/A at 1LSB

DAC AND ERROR AMPLIFIER

µA

-5

5

CSAV Input Bias Current

mV

232

247

260

CC = 2V, CSAV = 0V, D/A at full scale

CSAV Regulation Point

V

0

1.0

CSAV Input Voltage Range

V

3

MINDAC Digital PWM Threshold

V

01

MINDAC Input Voltage Range

µA

-1

1

MINDAC Input Bias Current

UNITS

MIN

TYP

MAX

PARAMETER

D/A at 1LSB

12

Referred to REF

V

0.8

SHDN, UP, DN Input Low Voltage

V

2.4

SHDN, UP, DN Input High Voltage

µA

-1

1

SHDN, UP, DN Input Bias Current

MAX1611 LOGIC LEVELS

V

0.8

SMBSUS, SDA, SCL Input Low Voltage

V

2.2

SMBSUS, SDA, SCL Input High Voltage

µA

-1

1

SMBSUS, SDA, SCL Input Bias Current

mA

6

SDA Output Low Sink Current