AAT1597数据手册AAT中文资料规格书

描述 Description

\tAAT1597 is a DC-DC converter with 6-strings white LEDs backlight driver. It’s input voltage can be operated from 2.5V to 24V. It can drive 6-strings of LEDs using current balance. The mismatch current of every string is within ±1.5%. The maximum mismatch among each IC is ±3.0%. The OVP pin can be setup for different LEDs configuration.


\tAAT1597 provides protection when the LEDs are in open conditions. The protective function closes the open LEDs string and keep the others working. Users can use the PWM pin to adjust the brightness of these LEDs strings.


\tAAT1597 offers a simple and economical solution for LCD white LEDs backlight driver.

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特性 Features

• 6 Channels, Adjust LED Current up to 45mA
• 2.5V to 24V Input Range
• WLED Open Protection
• OVP and Thermal Protection
• Adjustable 600kHz to 2MHz Switching Frequency
• Wide PWM Input Frequency: 100Hz to 20kHz
• Analog and Direct PWM Mode Control
• Internal Soft-Start and 40V Power MOSFET
• Maximum ±1.5% Current Matching
• Maximum ±3.0% Current Accuracy
• Adjustable OVP Voltage
• Compact WQFN24L-4 x 4 Package

应用 Application

• AAT1597 is a DC-DC converter with 6-strings white LEDs backlight driver. It’s input voltage can be operated from 2.5V to 24V. It can drive 6-strings of LEDs using current balance. The mismatch current of every string is within ±1.5%. The maximum mismatch among each IC is ±3.0%. The OVP pin can be setup for different LEDs configuration.AAT1597 provides protection when the LEDs are in open conditions. The protective function closes the open LEDs string and keep the others working. Users can use the PWM pin to adjust the brightness of these LEDs strings.AAT1597 offers a simple and economical solution for LCD white LEDs backlight driver.