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| SP6687 Datasheet, PDF (2/12 Pages) Sipex Corporation – 4 Channel Charge Pump White LED Driver | |||
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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.
Input Voltage.....................................................-0.3 to 6V
Output Voltage..................................................-0.3 to 6V
Power Dissipation, PD @ TA = 25ºC
QFN-16L 4x4...........................................................2.5W
Package Thermal Resistance
QFN-16L 4x4, OJA................................................40ºC/W
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
ELECTRICAL CHARACTERISTICS
Unless otherwise specified: VIN = 2.85V to 5.5V, C1 = C2 =1.0µF (ESR = 0.03â¦, TA = 25°C)
PARAMETER
MIN TYP
Input Supply Voltage
2.5
Under Voltage Lockout Threshold 1.8
2.2
Under Voltage Lockout Hysteresis
50
18.5 20
Current into LEDs
1, 2, 3, and 4
4.5
5
2
2
Quiescent Current
3
Quiescent Current in Shutdown
1
ILED Accuracy (Note 1)
2
Current Matching (Note 2)
1
1x mode to 1.5x mode Transition
Voltage (VIN Falling)
3.75
1.5x mode to 2x mode Transition
Voltage (V Falling)
2.65
IN
Oscillator Frequency
0.8
1.0
Input Current Limit
250 400
Output Over Voltage Protection
5.5
MAX
5.5
2.4
21.5
5.5
20
30
4
10
7.5
5
TBD
2.8
1.2
650
6
UNITS
V
V
mV
mA
mA
mA
mA
mA
µA
%
%
V
V
MHz
mA
V
CONDITIONS
VIN Rising
R
SET
=
24.0kâ¦
R
SET
=
91.0kâ¦
2.7V < VIN < 5.5V
3.1V < VIN < 5.5V
F
OSC
=
1MHz,
IOUT
=
0mA
VIN = 4.5V, En Pin = ZeroV
2mA < ILED < 30mA
2mA < ILED < 30mA
VLED = 3.5V, IOUT = 80mA
ILED1
=
I
LED2
= ILED3
=
ILED4
=
20mA
VLED
=
3.5V,
I=
OUT
80mA
ILED1 =
I
LED2
=
ILED3
=
ILED4
=
20mA
Short Circuit applied from
VOUT to GND
Open circuit at any LED that
is programmed to be in the
ON state
Date: 11/15/05
SP6687 4Channel Charge Pump White LED Driver
2
© Copyright 2005 Sipex Corporation
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