MAX8790AETP datasheet(11/23 Pages) MAXIM

Part #	MAX8790AETP

Description	Six-String White LED Driver with Active Current Balancing for LCD Panel Applications

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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Six-String White LED Driver with Active

Current Balancing for LCD Panel Applications

______________________________________________________________________________________

11

5V LINEAR

REGULATOR

OSCILLATOR

SLOPE

COMPENSATION

CLOCK

FB OVERVOLTAGE

COMPARATOR

ERROR

COMPARATOR

OUTPUT OVERVOLTAGE

COMPARATOR

OV

EXT

CS

ERROR

AMPLIFIER

CURRENT SOURCE

IN

FB1

GND

N

FB2

65ms TIMER

SHUTDOWN

LATCH

CONTROL AND

DRIVER LOGIC

CURRENT SENSE

HVC

FB6

FB5

FB4

FB3

FB2

LVC

TRI-LEVEL

COMPARATOR

gm

EN

VCC

OSC

REF ADJ

CLK

REF

VCC - 0.4V

VCC + 0.6V

1.25V

ISET

PLL

8

5 LSBs

5 MSBs

CPLL

BRT

ENA

OSC

256 x fBRT

DIGITAL

COMPARATOR

8-BIT

LATCH

8-BIT DAC

SAT

DIGITAL CONTROL

CURRENT SOURCE

8-BIT

COUNTER

FSET

CCV

VCC

SHDN

FB3

CURRENT SOURCE

FB4

CURRENT SOURCE

FB5

CURRENT SOURCE

FB6

CURRENT SOURCE

8

10

Ω

Figure 2. Control Circuit Block Diagram

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