产品概述
The MAX1554ETA+T is a high efficiency, 40V step-up converter for 2 to 10 white LEDs in 8 pin TDFN package. It drives white LEDs in series with a constant current to provide efficient display back lighting in cellular phones, PDAs and other hand held devices. The step-up converter includes an internal 40V, low RDSON, N-channel MOSFET switch for high efficiency and maximum battery life. It has a current limit of 970mA for driving up to 10 white LEDs. A single analogue /PWM Dual Mode input provides two simple means of brightness adjustment. A separate enable input provides on/off control and soft-start minimizes inrush current during start up.
- Supply voltage range is 3.15V to 5.5V
- Operating temperature range from -40°C to 85°C
- Highly integrated and flexible solution for wide range of backlighting applications
- Constant current regulation for even LED illumination
- Internal 40V MOSFET switch capable of driving 10 LEDs
- Analogue or PWM control of LED intensity
- Optimized for low Iinput ripple
- Small, low profile external components
- High efficiency improves Battery life, up to 88% efficiency driving 6 LEDs
- Up to 82% efficiency driving 9 LEDs (20mA, VCC = 3.6V)
应用
电源管理, 便携式器材
产品信息
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- 升压 (升压)
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- 2.7V
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- 5.5V
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- 40V
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- 970mA
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- 250kHz
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- 1输出
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- 表面安装
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- TDFN
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- 8引脚
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- -40°C
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- 85°C
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- -
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- -
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- MSL 1 -无限制