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Position:IcFull.com » IC Electronic information » Category: L

IC Electronic information

LT3597: Three-Channel Step-Down LED Driver

In Electronic Infomation Category: L | on April 13,2011

LT ? 3597 is a 60V, three-channel buck LED driver can achieve 10,000:1 100Hz frequency conditions, the number of PWM dimming Each channel can be used in fast NPN current source to drive up to 10 LED. Alternatively, you can use CTRL1-3 analog control pins to implement the LED dimming operation.

Step-down switching frequency can be set between 200kHz to 1MHz. The frequency can be synchronized to an external clock. LT3597 also follow the manufacturers thermal derating specifications prepared at the same time providing the maximum LED brightness. By lowering the amount of temperature control pin layout in the main a negative temperature coefficient (NTC) resistor to set.

LT3597 adaptive control of VOUT to achieve optimal efficiency. The devices other features include: Channel between 2% LED current matching accuracy of the report open LED and AM7985AJC/10 datasheet and short circuit LED protection and AM7985AJC/10 price and programmable LED current and AM7985AJC/10 suppliers and programmable temperature protection.

Package


Features

Three 100mA buck regulator, each channel can be used to drive fast NPN current source up to 10 LED

For In shutdown mode interrupt access

LED

VOUT for improving efficiency of the adaptive control

6V to 60V input voltage range

Accuracy of 2% of the LED current matching

External resistor sets the LED current per channel

Internal compensation and soft-start

Programmable switching frequency (200kHz to 1MHz)

Can be synchronized to an external clock

Open LED detection and reporting Short-circuit protection and LED pins

report

Programmable LED thermal derating

Programmable temperature protection

With high-voltage pin 0.6mm pitch 5mm x 8mm QFN thermally enhanced package

Typical application


data download: LT3597.rar

AM7985AJC/10 datasheetAM7985AJC/10 suppliersAM7985AJC/10 Price

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