2

Date: 11/15/05

SP6687 4Channel Charge Pump White LED Driver

© Copyright 2005 Sipex Corporation

Input Voltage.....................................................-0.3 to 6V

Output Voltage..................................................-0.3 to 6V

Power Dissipation, P

QFN-16L 4x4...........................................................2.5W

Package Thermal Resistance

QFN-16L 4x4, O

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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.

Junction Temperature Range...............-40ºC to 125ºC

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

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

ESD Susceptibility

Human Body Model...............................................2kV

Machine Model.....................................................200V

PARAMETER

MIN

TYP

MAX

UNITS

CONDITIONS

Input Supply Voltage

2.5

5.5

V

Under Voltage Lockout Threshold

1.8

2.2

2.4

V

Under Voltage Lockout Hysteresis

50

mV

Current into LEDs

1, 2, 3, and 4

18.5

20

21.5

mA

R

SET

= 24.0kΩ

4.5

5

5.5

mA

R

SET

= 91.0kΩ

220mA

230mA

Quiescent Current

3

4

mA

F

OSC

Quiescent Current in Shutdown

1

10

2

7.5

%

Current Matching (Note 2)

1

5

%

1x mode to 1.5x mode Transition

Voltage (V

3.75

TBD

V

LED2

20mA

1.5x mode to 2x mode Transition

Voltage (V

IN

Falling)

2.65

2.8

V

OUT

= 80mA

LED2

20mA

Oscillator Frequency

0.8

1.0

1.2

MHz

Input Current Limit

250

400

650

mA

Short Circuit applied from

Output Over Voltage Protection

5.5

6

V

Open circuit at any LED that

is programmed to be in the

ON state