MAX16802B Maxim Integrated Products, MAX16802B Datasheet - Page 13

• Manufacturer Part Number: MAX16802B
• Description: Offline and DC-DC PWM Controllers
• Manufacturer: Maxim Integrated Products

Figure 8. Universal AC Input, Offline, Isolated Flyback HB LED Driver with Low-Frequency PWM Dimming
Figure 9. Universal Input, Offline, High-Accuracy Current Regulation in an Isolated Flyback HB LED Driver
UNIVERSAL
AC INPUT
OPTO TRANS
U2
RECTIFIER
BRIDGE
+V
GND
IN
R6
______________________________________________________________________________________
R5
C1
C3
R1
*WARNING: PWM DIMMING SIGNAL IS SHOWN AT THE PRIMARY SIDE.
USE AN OPTOCOUPLER FOR SAFETY ISOLATION OF THE PWM SIGNAL.
*PWM
C1
R1
R7
Offline and DC-DC PWM Controllers for
C2
C2
IN
V
COMP
DIM/FB
CC
OPTIONAL ONLY WHEN PWM DIMMING IS USED
V
IN
DIM/FB
MAX16801
CC
D3
MAX16801B
C4
High-Brightness LED Drivers
UVLO/EN
NDRV
GND
CS
R2
R3
UVLO/EN
NDRV
GND
CS
D1
D1
Q1
T1
C5
R4
R3
R2
D3
C4
Q1
U3
TLV431
V
R4
C5
OUT
R11
OPTO LED
T1
U2
R10
C3
R9
R8
D2
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C6
Z1
LEDs
13