4 & 6 CHANNEL CHARGE PUMPS FOR WHITE LED BIAS
FSP3302/FSP3303
ELECTRICAL CHARACTERISTICS
(Circuit of the below Figure 1, V
IN
= 3.5V, T
A
= 25°C unless otherwise specified.)
Parameter
Input Supply Range
Supply Current
Shutdown Supply Current
Full Scale Output Current
Output Current Matching
Output Current Line Regulation
Charge Pump Switching
Frequency
Soft-Start Time
Thermal Shutdown Temperature
EN/PROG
Logic Low Threshold
Logic High Threshold
Programming Low Time
Programming Low Time to
Reinitialize DAC after Finish
Programming Minimum High Time
Programming High Time
Finish High Time
Off Timeout
Input Current
V
IL
V
IH
t
LOW
t
LOW1
t
HIGHMIN
t
HIGH
t
FINISH
t
OFF
500
300
500
1
1.4
0.3
5
50
75
75
75
0.5
V
V
µs
µs
ns
µs
µs
µs
µA
f
QP
t
SS
Hysteresis = 20°C
1000
I
DMAX
V
IN
= 3V to 5.5V,
4 LED channels active
Between any two channels
38
44
0.3
0.4
1200
330
160
1700
Symbol
V
IN
I
Q
Test Conditions
Min.
2.7
Typ.
Max.
5.2
3.5
1
49
Unit
V
mA
µA
mA
%
%/V
kHz
µs
°C
TYPICAL APPLICATION CIRCUIT
Figure 1
3/10
2007-4-10
FOSLINK [ FOSLINK SEMICONDUCTOR CO.,LTD ]
