製品の説明
NCP5890 drives LEDs for LCD backlighting & multiple LEDs for keypad backlight or funlight. Unique structure that allows all LEDs to be connected in series, while offering 3 independent PWM controls on LED sets. Inductive step-down converter structure offers high efficiency up to 90%. Integrated ambient light sensing adjusts backlight brightness to optimize power consumption and user comfort. Built-in gradual dimming can be called up upon a simple I2C command, thus will not require any external processor resources or software programming. The device is available in the ultra thin QFN-16 package with a 0.5 mm profile.
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特長 |
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利点 |
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- 2.7 to 5.5V Input voltage range
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- Operates over the full standard Li-Ion battery voltage.
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- 90% Peak efficiency with 4.7H/ 150m inductor
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- Save energy, extends battery operating time.
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- Built-in Gradual Dimming (Fade-in/ -out effect)
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- Elimnate need of software programing and processor resources
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- Ambient light sensor adjusts backlight current
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- Elimnate need of software programing and processor resources
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- 3 independent PWM control LED segments
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- Provides RGB or White LEDs Fun Light control
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- Support the I2C Protocol with address extension
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- The extended address is usefull to avoid I2C conflict when several chips share the same bus.
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- The tight tolerance yields an accurate rendering color of the associated LED
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- Ultra Thin 0.5mm QFN16 package
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- The package is small enough to fit into any thin application
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- True cut-off elminate leakage current in shutdown mode
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- Extend battery standby time
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- 34 V / 25 mA output capability through the whole string of LEDs
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- Can drive high number of LEDs with good efficiency
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アプリケーション |
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最終製品 |
- LCD and Keypad Backlighting
- Fun light with RGB or White LED
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- Smartphone and Feature Phones
- Portable Media Player (PMP)
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For complete product information, see the
datasheet
