PAM2801 Datasheet, PDF (4/9 Pages) Power Analog Micoelectronics – 1W High Power White LED Driver

PAM2801
1W High Power White LED Driver
Typical Performance Characteristics
T_A=25℃, L=2.2uH , C_ΙΝ=10uF, C_Ο=10uF, unless otherwise noted.
LED Power Efficiency vs Input Voltage
95
90
85
80 _{ILED=185mA @VF=3.2V}
75
70
ILED=350mA @VF=3.4V
65
60
55
50
3.3 3 2.7 2.4 2.1 1.8 1.5 1.2 0.9
Input Voltage(V)
DC Input Current vs Input Voltage
2100
1900
1700
1500
1300
1100
900
700
500
ILED=350mA@VF=3.4V
300
ILED=185 mA@VF=3.2V
100
3.3 3 2.7 2.4 2.1 1.8 1.5 1.2 0.9
Input Voltage(V)
LED Current vs Input Voltage
400
350
ILED=350m A@VF=3.4V
300
250
200
150
ILED=185m A@VF=3.2V
100
3.3 3 2.7 2.4 2.1 1.8 1.5 1.2 0.9
Input Voltage(V)
Feedback Voltage vs Temperature
100 ^{(I = LED 350mA)}
95
VIN=1.8V
90
85
VIN=3V VIN=2.4V
80
75
70
25
50
75
100
125
Tem perature(℃)
LED Power Efficiency vs LED Current
95
VIN=3V
90
85
80
75
VIN=1.8V
VIN=2.4V
70
65
60
100 150 200 250 300 350 400
LED Current(mA)
Feedback Voltage vs Input Voltage
(I = _LED 350mA)
100
95
TA=+25℃
90
85
TA=+85℃
80
75
70
3.3 3 2.7 2.4 2.1 1.8 1.5 1.2 0.9
Input Voltage(V)
Power Analog Microelectronics,Inc
www.poweranalog.com
4
08/2007