Digitally Controlled CCFL Backlight

Power Supplies

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

BATT to GND ............................................................-0.3V to 28V

BST to GND ..............................................................-0.3V to 30V

BST to LX ....................................................................-0.3V to 6V

LX to GND ................................................-0.6V to (BATT + 0.3V)

VL to GND...................................................................-0.3V to 6V

CS, CSAV, CC, SYNC, REF, MINDAC,

SS, OTP to GND............................................-0.3V to (VL + 0.3V)

SHDN, UP, DN to GND ...............................................-0.3V to 6V

SMBSUS, SDA, SCL to GND ......................................-0.3V to 6V

BATT, LX Current .....................................................................1A

SDA Current ........................................................................50mA

VL Current ...........................................................................50mA

SO (derate 8.70mW/°C above +70°C) .........................696mW

Operating Temperature Range

MAX1610CSE/MAX1611CSE ..............................0°C to +70°C

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10sec) .............................+300°C

SYNC = REF

SYNC = GND or VL

CONDITIONS

%

89

91

Power-Switch Maximum Duty Cycle

V

4.0

SYNC Input High Voltage

V

0.5

SYNC Input Low Voltage

µA

-1

1

SYNC Input Current

ns

200

BATT = 25V

SYNC Low Pulse Width

ns

200

SYNC High Pulse Width

kHz

240

350

Oscillator SYNC Pin Synchronization Range

kHz

125

145

165

4.75V < BATT < 26V

Oscillator Frequency

250

290

330

µA

10

No load

LX Switch Off-Leakage Current

Ω

0.7

1.0

BATT-to-LX Switch On-Resistance

SWITCHING REGULATOR

BST - LX = 4.1V

BATT Input Voltage Range

V

4.75

26

SUPPLY AND REFERENCE

SYNC = REF

mV

620

SYNC = GND

REF Load Regulation

V

1.92

2.0

2.08

REF Output Voltage

V

3.0

3.6

4.75

VL Output Voltage, Shutdown Mode

V

4.25

4.5

4.75

VL Output Voltage, Operate Mode

mA

1.5

3

BATT Quiescent Supply Current,

Operate Mode

µA

10

20

BATT Quiescent Supply Current,

Shutdown Mode

UNITS

MIN

TYP

MAX

PARAMETER

SS = GND

µA

2.5

4.0

5.5

SS Source Current

SS = 0.5V

mA

2

SS Sink Current