High-Voltage, 100mA/200mA Adjustable Linear

High-Brightness LED Drivers with PWM Dimming

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9

Multichannel HB LED Driver

Figure 5 shows an array of MAX16815/MAX16828s with

independent DIM control. The MAX5094C, a current-

mode PWM controller, provides the input power to each

LED driver preregulated voltage to multiple MAX16815/

MAX16828 drivers.

Chip Information

PROCESS: BiCMOS

IN

CS+

V5

DIM

OUT

GND

LEDs

C2

R1

Z1

R2

C1

D1

TAIL

STOP

R3

MAX16815

MAX16828

CS-

Q1

Figure 3. Two-Level Brightness with Current Level Switch for

TAIL/STOP Lights

IN

DIM

PWM

DIMMING

CS+

V5

OUT

GND

LEDs

C2

Q1

C1

MAX16815

MAX16828

CS-

Figure 4. Increased LED Current (Ampere Range)

with a Single BJT

REF

C3

R3

C6

R4

C4

L1

COMP

FB

CS

GND

CT

OUT

MAX5094C

MAX16815

MAX16828

U2

C2

D1

IN

EN

DIM

R2

CS-

CS+

OUT

GND

V5

R5

C7

LEDs

Q1

C10

MAX16815

MAX16828

U4

IN

EN

DIM

CS-

CS+

OUT

GND

V5

R7

C11

LEDs

C8

MAX16815

MAX16828

U3

IN

EN

DIM

CS-

CS+

OUT

GND

V5

R6

C9

LEDs

Figure 5. Multichannel HB LED Drivers for LCD Backlight