Datasheet > LT8391A

LT8391A

更新时间： 2024-01-26 08:55:33

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
32页	2696K
描述
60VIN, 100VOUT Synchronous 4-Switch Buck-Boost LED Driver Controller with Low EMI

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中文翻译

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LT8391A 数据手册

LT8393

60V , 100V Synchronous

OUT

4-Switch Buck-Boost LED Driver

Controller with Low EMI

FEATURES

DESCRIPTION

The LT^®8393 is a synchronous 4-switch buck-boost LED

4-Switch Single Inductor Architecture Allows V

controller that regulates LED current from input volt-

age above, below, or equal to the output voltage. The

proprietary peak-buck peak-boost current mode control

scheme allows adjustable and synchronizable 350kHz to

2MHz fixed frequency operation, or internal 25% triangle

spread spectrum operation for low EMI. With 4V to 60V

input, 0V to 100V output, and seamless low noise transi-

tions between operation regions, the LT8393 is ideal for

LEDdriverandbatterychargerapplicationsinautomotive,

industrial, and battery-powered systems.

Above, Below or Equal to V

Up to 95% Efﬁciency

OUT

Proprietary Peak-Buck Peak-Boost Current Mode

Wide V Range: 4V to 60V

Wide V

Range: 0V to 100V

OUT

4% LED Current Accuracy

2000:1 External and 128:1 Internal PWM Dimming

10V High Side PMOS PWM Switch Driver

No Top MOSFET Refresh Noise in Buck or Boost

Adjustable and Synchronizable: 350kHz to 2MHz

Flicker-Free Spread Spectrum for Low EMI

Open and Short LED Protection with Fault Reporting

AEC-Q100 Qualiﬁcation in Progress

The LT8393 provides both internal (up to 128:1) and

external (up to 2000:1) LED current PWM dimming with

10V of high side PMOS gate drive. The CTRL pin provides

flexible 20:1 analog dimming with 4% LED current ac-

curacy at 100mV full scale. Fault protection is provided to

detect an open or short LED condition, during which the

LT8393 retries, latches off, or keeps running.

APPLICATIONS

Automotive Head Lamps/Running Lamps

High Voltage LED Lighting

All registered trademarks and trademarks are the property of their respective owners.

TYPICAL APPLICATION

93% Efficient 24W (80V, 300mA) 350kHz Buck-Boost LED Driver

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10mΩ

ꢀ

ꢁꢂ

ꢃꢀ ꢄꢅ ꢆꢇꢀ

ꢀ.ꢁꢂꢃ

ꢄꢅꢆ

ꢇꢈ

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ꢀꢁꢂ.ꢃꢄꢅ

ꢆꢇꢇꢈ

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ꢀꢁꢂ ꢀꢁꢂ

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ꢀꢁꢂ

ꢀꢁꢂꢃ

Efficiency vs V_IN

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ꢀꢁꢂ

ꢀ

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ꢀꢁꢂ

ꢀꢁꢂꢃꢄꢅꢆ

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ꢀꢀꢁꢂ ꢃꢁꢁ

ꢀꢁ.ꢂꢃ

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ꢀꢁꢂꢃꢄꢀꢅRꢆ

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ꢀꢀ

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ꢀ.ꢁꢂꢃ

ꢀꢁꢁꢂ

330mΩ

FAULT

AꢀAꢁꢂꢃ ꢄꢅꢆ

FAULT

ꢀꢁꢂ

ꢀ

ꢀꢁ ꢀꢁ ꢀꢁ ꢀꢁ ꢀꢁ ꢀꢁ ꢀꢁ ꢀꢁ

ꢀꢁRꢂ

ꢀꢁꢂꢃꢄ

ꢀꢁꢂꢃꢄ ꢅꢆꢇꢄAꢈꢉ ꢊꢅꢋ

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ꢀꢁꢂꢁ ꢃAꢄꢅꢆ

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Rꢀ

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ꢆꢅꢅꢇA

ꢈꢉꢊꢋ

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ꢃꢄꢅꢂꢆꢇ

ꢀꢁꢂ

ꢀ.ꢁꢂ

ꢀꢁꢂꢃ

0.1μF

ꢀꢁꢂ

ꢃꢄꢅꢆꢇ

ꢀꢁꢂꢁ ꢃAꢄꢅꢆ

Rev. A

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中文翻译

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与LT8391A相关器件

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LT8392	ADI	获取价格	60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum
LT8393	ADI	获取价格	60VIN, 100VOUT Synchronous 4-Switch Buck-Boost LED Driver Controller with Low EMI
LT8393EFE	ADI	获取价格	60VIN, 100VOUT Synchronous 4-Switch Buck-Boost LED Driver Controller with Low EMI
LT8393EUFDM	ADI	获取价格	60VIN, 100VOUT Synchronous 4-Switch Buck-Boost LED Driver Controller with Low EMI
LT8393HFE	ADI	获取价格	60VIN, 100VOUT Synchronous 4-Switch Buck-Boost LED Driver Controller with Low EMI
LT8393HUFDM	ADI	获取价格	60VIN, 100VOUT Synchronous 4-Switch Buck-Boost LED Driver Controller with Low EMI
LT8393JFE	ADI	获取价格	60VIN, 100VOUT Synchronous 4-Switch Buck-Boost LED Driver Controller with Low EMI
LT8393JUFDM	ADI	获取价格	60VIN, 100VOUT Synchronous 4-Switch Buck-Boost LED Driver Controller with Low EMI
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