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| PAM2845 Datasheet, PDF (8/14 Pages) Power Analog Micoelectronics – 40V High Power Boost Convertor with 6 Channel Constant Current Source | |||
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PAM2845
40V High Power Boost Convertor
with 6 Channel Constant Current Source
Typical Performance Characteristic
TA=25°C, V = IN ENA=12V, L=22μH, Rset=10kΩ, unless otherwise noted.
Efficiency VS Input Voltage
100%
Start up and Shutdown waveforms
8x6 LED
95%
6x6 LED
10x6 LED
Vout
90%
12x6 LED
DC
coupling
85%
IL
DC
coupling
80%
75%
4.5
8
12
16
20
24
28
Input Voltage(V)
ENA
DC
coupling
Switching Waveforms
Inductor Current Waveforms(PWMD=20%)
Vsw
DC
coupling
IL
DC
coupling
PWMD
DC
coupling
VLED1
DC
coupling
IL
DC
coupling
LED Current Waveforms(PWMD=20%)
PWMD
DC
coupling
VLED1
DC
coupling
ILED
DC
coupling
Inductor Current Waveforms(PWMD=50%)
PWMD
DC
coupling
VLED1
DC
coupling
IL
DC
coupling
Power Analog Microelectronics,Inc
www.poweranalog.com
8
08/2008 Rev 1.0
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