MAX16828ASA(2009) 查看數據表（PDF） - Maxim Integrated

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MAX16828ASA
(Rev.:2009)

High-Voltage, 100mA/200mA Adjustable Linear High-Brightness LED Drivers with PWM Dimming

Maxim Integrated 

High-Voltage, 100mA/200mA Adjustable Linear

High-Brightness LED Drivers with PWM Dimming

PIN

TDFN

SO

1

6

—

7

2

8

3

1

4

2

—

3

5

4

6

5

—

—

Pin Description

NAME

DIM

EN

OUT

IN

CS+

CS-

V5

GND

EP

FUNCTION

Pulsed Dimming Input. Drive DIM low to turn off output current (LED current). Drive DIM

high to turn on the output current (LED current). DIM is pulled high to VIN when left

unconnected.

Enable Input. Drive EN high to enable the output. For the TDFN package, this input is not

accessible and always high.

Current-Regulated Output

Positive Input Supply. Bypass IN with a 0.1μF (min) capacitor to GND.

LED Current-Sense Amplifier Positive Input. For the SO package version, connect the

current-sense resistor between this pin and CS-; for the TDFN version, connect it between

this pin and ground.

LED Current-Sense Amplifier Negative Input. Connect to ground.

+5V Regulated Output. Connect a 0.1μF (min) capacitor from V5 to GND.

Ground

Exposed Pad. Connect to a large ground plane for effective power dissipation. Do not use

as the only ground connection.

TDFN Functional Diagram

DIM

IN

1.2V

BANDGAP

V5

AND 5V

REGULATOR

THERMAL

SHUTDOWN

GND

MAX16815

MAX16828

0.8μA

IREG

DIFF

AMP

P

OUT

CS+

6 _______________________________________________________________________________________

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