MAX8847Z 데이터 시트보기 (PDF) - Maxim Integrated

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MAX8847Z

High-Performance Negative Charge Pump for 6 White LEDs in 3mm x 3mm Thin QFN

Maxim Integrated 

MAX8847Y/MAX8847Z

High-Performance Negative Charge Pump

for 6 White LEDs in 3mm x 3mm Thin QFN

C2

C3

1µF

1µF

VIN

IN

2.7V TO 5.5V

C1

1µF

GND

ENABLE

AND

ENA

DIMMING

CONTROL

INPUTS

ENB

CPWM

C25

0.22µF

C1P

C1N

C2P

C2N

INVERTING CHARGE PUMP

FB

1MHz

OSCILLATOR

SEL

MIN

CURRENT

REGULATOR

LED

ENABLE

PWM

DIMMING

CURRENT

REGULATOR

360kI

CURRENT

REGULATOR

CURRENT

SOURCE

CONTROL

CURRENT

REGULATOR

THERMAL

DERATING

AND

PROTECTION

MAX8847Y

MAX8847Z

CURRENT

REGULATOR

CURRENT

REGULATOR

NEG

C4

1µF

EP

VIN

LED1

LED2

LED3

LED4

LED5

LED6

Figure 1. Functional Diagram and Application Circuit

Maxim Integrated

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