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白/蓝LED驱动IC
白/蓝LED驱动IC
白/蓝LED驱动IC
The PT4401/2 is a series of White/Blue LED drivers, with PT4401 capable of driving three LEDs and PT4402 driving four LEDs. There is no external component needed, which helps to lower the system cost significantly. The circuit is optimized to provide over 90% efficiency. The PT4401/2 is ideal to drive white LEDs used for Li-ion battery powered LCD displays. The LED brightness can be adjusted in real
time through a PWM signal at the EN pin. The target end applications are small color LCD displays in mobile phones, smart phone, digital cameras, PDA etc.
PT4401 is available in SOT23-6 package and PT4402 in MSOP-8 package, respectively.
FEATURES
No external component required
Fixed 20mA and 15mA sinking current
Individual current sink circuit for each output to prevent short/open circuit on LEDs
PTC LED current for luminosity compensation
3 channels (PT4401) and 4 channels (PT4402) available
PWM tuned LED brightness through EN pin
Supply voltage range 2.7V~6.0V
0.1uA standby current
APPLICATIONS
Small Size Color LCD Backlights
Mobile Phone, Smart Phone, PDA etc. Backlights
深圳市亿创微芯电子有限公司 地址:广东 深圳市宝安区 民治街道东边商务大厦701-702室
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白/蓝LED驱动IC
PT4401
PT
SOT23-6
全新原装
0.1uA