PAM2842 Datasheet, PDF (6/17 Pages) Power Analog Micoelectronics – High Power LED Driver

PAM2842
High Power LED Driver
Electrical Characteristic
V_EN=V_DD=24V, 1Wx10 LEDs, T_A=25°C, unless otherwise noted.
PARAMETER
Conditions
Input Voltage Range
ENA=high (no switching)
ENA =high (1M switching frequency)
Quiescent Current
ENA =high (500k switching frequency)
ENA =high (200k switching frequency)
ENA =low
Feedback Voltage, Low Side
Feedback Voltage, High Side
LED Current Line Regulation
LED Current Load Regulation
V_FB=V_SENSE+ -AGND, V_SENSE-=AGND
V_FB =V_SENSE+ - V_{SENS E-}
I_O=350mA
LDO Stage
VDD_5V
No switching
VDD_5V current_limit
No switching
VDD_5V UVLO Threshold
No switching
VDD_5V UVLO Hysteresis
No switching
VDD_DR
No switching
VDD_DR current_limit
No switching
VDD_DR UVLO Threshold
No switching
VDD_DR UVLO Hysteresis
No switching
Switch Stage
Switch Rdson
VDD_5V=5V
Switch Current Limit
Switch Leakage Current
RT Voltage
Switching Frequency*
Min Duty Cycle
Max Duty Cycle
R _RT =71kΩ
R _RT =30kΩ
R _RT =71kΩ
R _RT =180kΩ
F_SW=1MHz
F_SW=500kHz
F_SW=200kHz
Low Side Sense
High Side Sense
Vc Source Current
Feedback voltage=0
Vc Sink Current
Feedback voltage=0
( ) ^{* Switching Frequency F =}
10¹²
SW _{24´ RRT +12k}
, reference value
Power Analog Microelectronics,Inc
www.poweranalog.com
6
Min Typ Max Units
5.5
40
V
1
2
mA
6
mA
3
mA
1.6
mA
5
10 μA
95 100 105 mV
95 100 105 mV
0.02
%/V
1.0
%
4.5
5
5.5
V
14
74
90
mA
3.7 4.0 4.3
V
200
mV
4.5
5
5.5
V
14
50
90
mA
3.7 4.0 4.3
V
200
mV
0.1
Ω
3.5
A
50
μA
1.1 1.2 1.3
V
800k 1M 1.2M Hz
400 500 600 kHz
160 200 240 kHz
10
%
5
%
2.5
%
95
%
100
%
30
μA
30
μA
09/2008 Rev 1.1