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TTP932-LED驅動芯片
首頁 > 產品中心 > IC系列 > LCD與LED類 > TTP932-LED驅動芯片

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General Description

TTP932is a high efficiency , constant current , continuous mode inductive step-down converter,designed for driving constant current to high power (single or multiple) LED with only 4 externalcomponents. TTP932 operates from input supply between 5V and 33V and provides an externally adjustable output current of up to 1A.

The TTP932 is specifically designed with PFM control to enhance the efficiency up to 95% .

The Output current can be modify by an external resister , and can adjusted , by applying an external control signal to the DIM pin , The DIM pin will accept a PWM waveform.

Additionally , to ensure the system reliability , TTP932 is built-in with over temperature protection , and LED open-circuit short-circuit protection to protect system from being damaged .

Features 1A output current

Wide input voltage range: 5V to 33V

High efficiency (up to 95%)

Internal NDMOS power switch

Single pin on/off and brightness control using PWM

Hysteretic PFM improves efficiency at light loads

With Thermal/Soft start /LED open-short detect protection

Only 4 External Components

Up to 1Mhz switching frequency

Typical 3% output current accuracy

Applications High power LED lighting

Automotive LED lighting

Low voltage industrial lighting

LED back-up lighting

Constant Current Source

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