A708 查看數據表（PDF） - ADDtek Corp

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A708

3 CHANNELS 20mA ADVANCED CURRENT REGULATOR

ADDtek Corp 

ABSOLUTE MAXIMUM RATINGS

Input Voltage, VDD

Output Sustaining Voltage, VLEDn

Voltage at all other pins

Maximum Junction Temperature, TJ

Storage Temperature Range

Lead Temperature (soldering, 10 seconds)

(Note)

Note:

Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground.

Currents are positive into, negative out of the specified terminal.

A708

-0.3V to 13.2V

-0.3V to 17V

-0.3V to 12V

150OC

-40OC to 150°C

260OC

Package

Y

POWER DISSIPATION TABLE

θJA Derating factor ( mW/°C )

TA≦25°C

TA=70 °C

TA= 85°C

(°C / W )

TA≧25 OC

Power rating (mW) Power rating (mW) Power rating (mW)

220

4.5

568

363

295

Note :

Junction Temperature Calculation: TJ = TA + (PD x θJA).

PD: Power Dissipation, TA: Ambient temperature, θJA: Thermal Resistance-Junction to Ambient

The θJA numbers are guidelines for the thermal performance of the device/PC-board system.

All of the above assume no ambient airflow.

BLOCK DIAGRAM

VDD

EN

VDDI

Control

Logic

Reference

Current

A708

Driving

Stage

Driving

Stage

Driving

Stage

LED1

LED2

LED3

GND

Copyright © 2007 ADDtek Corp.

2

DD076_A -- AUGUST 2007

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