MAX16803 Maxim Integrated Products, MAX16803 Datasheet - Page 9

• Manufacturer Part Number: MAX16803
• Description: High-Brightness LED Driver
• Manufacturer: Maxim Integrated Products

The application circuit in Figure 6 implements a two-
level brightness current for TAIL/STOP lights. In TAIL
operation, Q1 is off and the R1 sets the output current.
In STOP operation, Q1 turns on and the output current
is set by a parallel combination of R1 and R2.
Figure 6. Two Brightness Level with Current Level Switch for Tail/Stop Lights
Figure 7. Increased LED Current (Amper Range) with a Single BJT
Driver with PWM Dimming and 5V Regulator
High-Voltage, 350mA, High-Brightness LED
_______________________________________________________________________________________
STOP
TAIL
V
IN
C1
C1
Other Applications
PWM DIMMING
V5
IN
EN
DIM
GND
IN
EN
DIM
GND
MAX16803
MAX16803
OUT
CS+
CS-
V5
Figure 7 shows an application circuit with the
MAX16803 using a single BJT to provide high output
current. For proper operation:
where V
of the external BJT.
V
OUT
CS+
CS-
V5
IN(MIN)
CESAT(MAX)
C2
> V
LEDs
C2
R1
CESAT(MAX)
is the maximum saturation voltage
Q1
LEDs
Q1
R
SENSE
+ V
R2
FT(MAX)
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+ V
RSENSE
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