发明名称 |
LED DRIVER CIRCUIT WITH A BOOSTED VOLTAGE OUTPUT |
摘要 |
A Light Emitting Diode (LED) driver circuit with a boosted voltage output for driving an LED from a voltage power supply having a voltage that is lower than the turn "on" voltage of the LED is provided. A charge pump provides the boosted voltage output of the LED driver circuit. During operation, the LED driver circuit switches the LED on and off at a predetermined frequency such that a human observer perceives the LED to be continuously turned "on". In one embodiment, the LED driver circuit further comprises a current regulator for regulating the current supplied to the LED. In another embodiment, the LED driver circuit comprises a voltage regulator to regulate the boosted voltage output of the LED driver circuit.
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申请公布号 |
US2002171467(A1) |
申请公布日期 |
2002.11.21 |
申请号 |
US20010859310 |
申请日期 |
2001.05.18 |
申请人 |
WORLEY EUGENE ROBERT;WORLEY EUGENE ROBERT |
发明人 |
WORLEY EUGENE ROBERT;WORLEY EUGENE ROBERT |
分类号 |
H03K17/06;H05B33/08;(IPC1-7):H03K3/42 |
主分类号 |
H03K17/06 |
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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