发明名称 |
LED driver circuit and method |
摘要 |
An LED driver circuit and method are disclosed where an array of light emitting diodes have a transistor connected to each respective array of light emitting diodes. A PWM controller has an input for receiving a voltage reference and an output connected to selected transistors for driving selected transistors and setting a PWM duty cycle for the selected arrays of light emitting diodes to determine the brightness of selected light emitting diodes. An oscillator is connected to the PWM controller for driving the PWM controller.
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申请公布号 |
US2003025465(A1) |
申请公布日期 |
2003.02.06 |
申请号 |
US20010999157 |
申请日期 |
2001.10.31 |
申请人 |
STMICROELECTRONICS, INC. |
发明人 |
SWANSON DAVID F.;STEWART JAMES W.;LAM MICHAEL K.;CRISCIONE MARCELLO |
分类号 |
H05B33/08;(IPC1-7):B60Q1/02 |
主分类号 |
H05B33/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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