Rainbow Electronics MAX16803 - Manual (Page 10)

MAX16803
Multichannel HB LED Driver
Figure 8 shows an array of MAX16803s with independent
DIM control. The MAX5094C, a current-mode PWM con-
troller, provides the input power to each LED driver pre-
regulated voltage to multiple MAX16803 drivers.
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
10 ______________________________________________________________________________________
Chip Information
PROCESS: BiCMOS
3
4
2
1
10
9
11
12
5 6
IN
8
16 15 13
IN
C1
V IN
N.C.
GND
V5
CS-
C2
D1
R SENSE
CS+
MAX16803
7
N.C. N.C. N.C. N.C.
OUT EN DIM N.C.
14
OUT
V DIM
Typical Operating Circuit
REF C3
R3
C6
R4
C4
L1
COMP
FB
CS
GND
V CC
V IN
C T /R T
CT
OUT
MAX5094C
MAX16803
U2
C REF
C2
D1
C COMP
R COMP
IN
EN
DIM
R2
CS-
CS+
OUT
GND
V5
R5
C7
LEDs
Q1
C10
MAX16803
U4
IN
EN
DIM
CS-
CS+
OUT
GND
V5
R7
C11
LEDs
C8
MAX16803
U3
IN
EN
DIM
CS-
CS+
OUT
GND
V5
R6
C9
LEDs
Figure 8. Multichannel HB LED Driver for LCD Backlight