PAM2801 Datasheet, PDF (3/9 Pages) Power Analog Micoelectronics – 1W High Power White LED Driver

PAM2801
1W High Power White LED Driver
Electrical Characteristic
T_A=25℃, V = _IN 2.4V, I_LED=350mA, V_SHDN = V ,_IN L=2.2uH, C = _ΙΝ 10uF, C_O=10uF, unless otherwise noted.
Parameter
Input Voltage Range
Feedback Voltage
Start-up Voltage
Hold Voltage
Oscillator Frequency
SHDN Input High
SHDN Input Low
Over Temperature Shutdown
Over Temperature Hysteresis
Maximum Output Current
Range
Quiescent Current
Shutdown Current
Switch on Resistance
Current Limit
Efficiency
Symbol
Conditions
V_IN
V_FB
V_START
V_HOLD
F_OSC
V_SH
V_SL
OTS
OTH
I_LED=243mA（R_S=0.39Ω）,
V_IN: 0V→2.4V
I_LED=95mA（R_S=1Ω）,
V_IN: 2.4V→0V
V_IN=1.8V
V_IN=1.8V
I_O(MAX)
I_Q
I_SD
R_DSON
I_LIM
η
I_LED=0mA, V_O=3.4V,
Device Switching at 1MHz
Shutdown mode
V_O=3.4V
V_O=3.4V
I_LED=350mA
Min
0.9
90
0.85
1.0
350
2
Typ
Max Unit
VF-0.2
V
(note 1)
95
100 mV
0.9
V
0.65
V
1.0
1.15 MHz
V
0.4
V
150
℃
15
℃
mA
1
3
mA
1
uA
0.1
Ω
A
90
%
Note1: V_F - LED Forward Voltage
Power Analog Microelectronics,Inc
www.poweranalog.com
3
08/2007