MAX16823 Просмотр технического описания (PDF) - Maxim Integrated
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производитель
MAX16823
Maxim Integrated
MAX16823 Datasheet PDF : 12 Pages
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MAX16823
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
VIN
IN
CIN
OUT_
PWM DIMMING
REG
C2
MAX16823
DIM_
CS_
Q1
LEDs
RCS_
GND
Preload Current
Figure 6 shows the MAX16823 with a preload circuit. In
the circuit, the BJT, RPRELOAD, and REG generate a
preset load current. The preset load current IPRESET is
determined with the following formula:
IPRESET
=
VREG − 0.7V
R PRELOAD
This circuit is used with older body controllers that monitor
minimum RCL current to detect failures.
Figure 5. Increased LED Current (Ampere Range) with a Single
BJT
STOP
TAIL
RPRELOAD
CIN
100kΩ
100kΩ
CLGC
CREG
IN
OUT1
IN
OUT2
IN
OUT3
DIM1
DIM2
MAX16823
DIM3
CS1
LGC
CS2
REG
CS3
GND
TAIL
TAIL
STOP
RCS1
RCS2
RCS3
Figure 6. Preload Current Setting
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