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© 2011 Exar Corporation

2/10

Rev. 1.0.0

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of

the device at these ratings or any other above those

indicated in the operation sections of the specifications

below is not implied. Exposure to absolute maximum

rating conditions for extended periods of time may affect

reliability.

CHx .......................................................... -0.3V to 30V

Junction Temperature .......................................... 150°C

Storage Temperature .............................. -65°C to 150°C

Power Dissipation ................................ Internally Limited

Lead Temperature (Soldering, 10 sec) ................... 260°C

ESD Rating (HBM - Human Body Model) .................... 6kV

ESD Rating (MM - Machine Model) ...........................200V

OPERATING RATINGS

PWM Dimming Frequency.......................0.1KHz to 25KHz

Current per Channel .....................................................

Operating Temperature Range................... -40°C to 85°C

ELECTRICAL SPECIFICATIONS

limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric

25°C.

Parameter

Min.

Typ.

Max.

Units

Conditions

4.2

5.0

5.5

V

Shutdown Supply Current

0.1

1

µA

Quiescent Supply Current

0.5

1

mA

No load

Under Voltage Lockout threshold

3.6

3.8

4.0

V

Falling edge

Under Voltage Lockout Hysteresis

200

mV

ISET Reference Voltage

1.170

1.194

1.218

V

Current Multiplication Ratio

370

400

430

Maximum Output Current per Channel

23

45

mA

65

70

110

120

LED Current Matching

-1.5

1.5

%

Any 2 channels

Current Sink Saturation Voltage

0.45

V

0.8

1.2

Output Current Line Regulation

2

%/V

Output Current Load Regulation

4

%

Enable Logic LOW

0.8

V

XRP7618 is disabled

Enable Logic HIGH

1.8

V

XRP7618 is active

PWM Pin Logic LOW

0.8

V

XRP7618 is disabled

PWM Pin Logic HIGH

1.8

V

XRP7618 is active

SDB Pin Logic LOW

0.4

V

SDB Pin Logic HIGH

2.4

V

Feedback Output Current

5

15

µA

Thermal Shutdown Die Temperature

160

°C

Thermal Shutdown Hysteresis

20

°C