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| 型号： | ZXSC310E5TA |
| 厂商： | Diodes Inc |
| 文件页数： | 5/16页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT SOT23-5 |
| 特色产品： | LED Driver Solutions |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | 升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 背光，闪灯/白光 |
| 类型 - 次要： | 高亮度 LED（HBLED），白色 LED |
| 频率： | 200kHz |
| 电源电压： | 0.8 V ~ 8 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 产品目录页面： | 1478 (CN2011-ZH PDF) |
| 配用： | ZXSC310EV-ND - BOARD EVALUATION FOR ZXSC310E5TA |
| 其它名称： | ZXSC310DKR |
ZXSC310
DEVICE DESCRIPTION
The ZXSC310 is PFM, controller IC which, when
combined with a high performance external transistor,
enables the production of a high efficiency boost
converter for LED driving applications. A block diagram
is shown for the ZXSC310 below.
The on chip comparator forces the driver circuit and
therefore the external switching transistor off if the
voltage at I SENSE exceeds 19mV. An internal reference
circuit and divider set this threshold.
The voltage at I SENSE is taken from a current sense
resistor connected in series with the emitter of the
switching transistor. A monostable following the
output of the comparator forces the turn-off time of the
output stage to be typically 1.7us. This ensures that
there is sufficient time to discharge the inductor coil
before the next on period.
V CC
With every on pulse the switching transistor is kept on
until the voltage across the current-sense resistor
exceeds the threshold of the I SENSE input. The on-pulse
length, and therefore the switching frequency, is
determined by the programmed peak current, the input
voltage and the input to output voltage differential. See
applications section for details.
The driver circuit supplies the external switching
transistor with a fixed drive current. To maximise
efficiency the external transistor switched quickly,
typically being forced off within 30ns.
V RE
I
2
R1
R2
Drive
I
S TDN
V DRIVE
I SENSE
G N D
ZXSC310 Block Diagram
ISSUE 3 - SEPTEMBER 2007
5
SEMICONDUCTORS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ZXSC310E5TA-CUT TAPE | 制造商:DIODES 功能描述:ZXSC310 Series 3.5 mA 200 kHz Surface Mount LED Driver Solution - SOT-23-5 |
| ZXSC310EV | 功能描述:BOARD EVALUATION FOR ZXSC310E5TA RoHS:否 类别:编程器，开发系统 >> 评估板 - LED 驱动器 系列:- 标准包装:1 系列:PowerWise® 电流 - 输出 / 通道:20mA 输出及类型:1，非隔离 输出电压:17V 特点:可调光 输入电压:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相关产品:LM3508TLX-ND - IC LED DRVR WHT BCKLGT 9USMDLM3508TLDKR-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLCT-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLTR-ND - IC LED DRVR WHT BCKLGT 9MICROSMD |
| ZXSC380 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:Single or multi cell LED driver solution |
| ZXSC380FH | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:Single or multi cell LED driver solution |
| ZXSC380FHTA | 功能描述:LED照明驱动器 Single or Multi Cell RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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