产品概述
The MAX16819ATT+T is a 2MHz high brightness LED driver with high-side current sense and 5000:1 dimming in 6 pin TDFN package. It is a step down constant current high brightness LED (HB LED) driver provides a cost effective solution for architectural and ambient lighting, LED bulbs such as MR16 and other LED illumination applications. It operates from a 4.5V to 28V input voltage range and has 5V/10mA on-board regulator. A high-side current sense resistor adjusts the output current and a dedicated PWM input (DIM) enables a wide range of pulsed dimming. The high-side current sensing and an integrated current setting circuitry minimize the number of external components while delivering an LED current with ±5% accuracy. A hysteretic control algorithm ensures excellent input supply rejection and fast response during load transients and PWM dimming. The MAX16819 features a 30% inductor current ripple. This device operatesup to 2MHz switching frequency thus allowing for small component size.
- Output power is 25W
- Operating temperature range from -40°C to 125°C
- Maximum dimming frequency is 20KHz
- Supply current is 425µA
- Undervoltage lockout hysteresis is 0.50.5
应用
电源管理, 便携式器材, 工业
产品信息
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- 降压 (降压)
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- 4.5V
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- 28V
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- 26V
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- 3A
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- 2MHz
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- 1输出
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- 表面安装
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- TDFN
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- 6引脚
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- -40°C
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- 125°C
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- -
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- -
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- MSL 1 -无限制