ST STP4CMP带电荷泵四路LED驱动解决方案
关键词：
led驱动 , st , stp4cmp , 电荷泵
st公司的stp4cmp是基于电荷泵的四路led驱动器,设计用于rgb照明或lcd显示器背光.支持正向电压高达成3.8v的led,工作电压 2.7 v到5.5 v,四路电流可单独编程,最大电流30ma,输出电流精度 ±7%,通路间电流匹配度在 ±4%内.主要用在手机显示器背光和rgb led指示器驱动器.本文介绍了stp4cmp主要特性,框图,典型应用电路及其所用元件,stp4cmp评估板及其电路图,steval-tll012v1演示板主要特性和电路图,材料清单.
the stp4cmp is a charge pump based 4-channel led driver designed for rgb illumination or lcd display backlighting. the stp4cmp works off a battery with an input voltage between 2.7 v - 5.5 v. the device generates regulated current sinks with high absolute and channel-tochannel accuracy to drive up to 4 leds. it can support leds with forward voltage as high as 3.8 v. the current sink for each channel can be set with 4 individual external resistors. each channel is controlled independently. the pwm control can be applied directly to the 4 en (enable) pins to provide brightness control. when enabled, the charge pump, which uses a small ceramic bucket capacitor between c1p and c1n, operates to regulate the vout with a clamping voltage at typ.
5 v. the tiny qfn20 (1.8 x 3.2 mm) package allows the device to be also used for applications with space limitation.
stp4cmp主要特性:
■ operating voltage range: vcc (opr) = 2.7 v to 5.5 v
■ full rgb function support
■ 4-channel led driver with individual on/off control directly from input pins
■ individual programmable output current for the 4 channels through 4 external resistors with a max. capability of 30 ma
■ absolute output current accuracy of max. ±7% and channel-to-channel mismatch of max. ± 4%
■ selectable charge pump enable/disable
■ thermal protection
■ small qfn20 (1.8 x 3.2 mm) package
stp4cmp应用:
■ mobile phone display backlighting
■ rgb led indicator drivers
2012-7-9 11:26:32 上传
下载附件 (26.05 kb)
图1.stp4cmp方框图
2012-7-9 11:26:32 上传
下载附件 (13.36 kb)
图2.stp4cmp应用框图
图2应用电路外接元件:
2012-7-9 11:26:32 上传
下载附件 (26.33 kb)
2012-7-9 11:22:41 上传
下载附件 (87.32 kb)
图3.stp4cmp评估板外形图
2012-7-9 11:26:32 上传
下载附件 (31.87 kb)
图4.stp4cmp评估板电路图
steval-tll012v1演示板
the steval-tll012v1 demonstration board demonstrates the performance of the stp4cmp, a charge pump based 4-channel led driver designed for rgb illumination or lcd display backlighting.
this device works off a battery with an input voltage between 2.7 v - 5.5 v. the device generates regulated current sinks with high absolute and channel-to-channel accuracy to drive up to 4 leds. it can support leds with forward voltage as high as 3.8 v.
the current sink for each channel can be set with 4 individual external resistors. each channel is controlled independently.
the pwm control can be applied directly to the 4 en (enable) inputs to provide brightness control.
steval-tll012v1演示板主要特性:
■ operating voltage range: 2.7 v to 5.5 v
■ full rgb function support
■ 4-channel led driver with individual on/off control directly from input pins
■ individual programmable output current for the 4 channels through 4 external resistors with a max. capability of 30 ma
■ absolute output current accuracy of max. ±7% and channel-to-channel mismatch of max. ± 4%
■ selectable charge pump enable/disable
■ thermal protection
■ rohs compliant
2012-7-9 11:22:41 上传
下载附件 (74.58 kb)
图5.steval-tll012v1演示板外形图
2012-7-9 11:26:32 上传
下载附件 (11.79 kb)
图6.steval-tll012v1演示板电路图
steval-tll012v1演示板材料清单:
2012-7-9 11:26:32 上传
下载附件 (29.25 kb)
详情请见:
cd00236423.pdf(855.77 kb, 下载次数: 0)2012-7-9 11:42:13 上传
下载次数: 0
下载积分: 积分 -1
和
dm00056350.pdf(245.64 kb, 下载次数: 0)2012-7-9 11:42:20 上传
下载次数: 0
下载积分: 积分 -1
诺基亚转型，旨在领导或“重新评估”细分用户群
腾讯红魔游戏手机400Hz采样率双IC独立触控肩键刷新行业记录
多创科技获数千万元A轮融资，加速高性能磁传感芯片及模组产业化
用于ECU的传感器模块、执行器等BOM风险评估
iPhone14来了！苹果官宣发布会时间
ST STP4CMP带电荷泵四路LED驱动解决方案
小型空气监测系统是什么
无功功率补偿介绍
移动在四省完成SDN单层控制器纳管多厂商设备现网试点
详解ChatGPT数据集之谜
全国人工智能应用技术技能大赛在山东省青岛市拉开帷幕
华为智慧养猪计划曝光
我心澎湃：松果处理器首款神机小米5C正式发布，起步1499元
永磁功能材料和软磁功能材料的区别
印度9月笔记本电脑进口量猛增30%
英振荡器是什么 石英振荡器的特点
延时开关电路的制作和调试以及应用
采用检测框架CoP通过控制偏好检测事实不一致
I2C总线能挂多少设备？I2C spec知识总结
iPhone8什么时候上市？iPhone8最新消息：iPhone8的Touch ID、销售额、上市时间大揭秘
st公司的stp4cmp是基于电荷泵的四路led驱动器,设计用于rgb照明或lcd显示器背光.支持正向电压高达成3.8v的led,工作电压 2.7 v到5.5 v,四路电流可单独编程,最大电流30ma,输出电流精度 ±7%,通路间电流匹配度在 ±4%内.主要用在手机显示器背光和rgb led指示器驱动器.本文介绍了stp4cmp主要特性,框图,典型应用电路及其所用元件,stp4cmp评估板及其电路图,steval-tll012v1演示板主要特性和电路图,材料清单.
the stp4cmp is a charge pump based 4-channel led driver designed for rgb illumination or lcd display backlighting. the stp4cmp works off a battery with an input voltage between 2.7 v - 5.5 v. the device generates regulated current sinks with high absolute and channel-tochannel accuracy to drive up to 4 leds. it can support leds with forward voltage as high as 3.8 v. the current sink for each channel can be set with 4 individual external resistors. each channel is controlled independently. the pwm control can be applied directly to the 4 en (enable) pins to provide brightness control. when enabled, the charge pump, which uses a small ceramic bucket capacitor between c1p and c1n, operates to regulate the vout with a clamping voltage at typ.
5 v. the tiny qfn20 (1.8 x 3.2 mm) package allows the device to be also used for applications with space limitation.
stp4cmp主要特性:
■ operating voltage range: vcc (opr) = 2.7 v to 5.5 v
■ full rgb function support
■ 4-channel led driver with individual on/off control directly from input pins
■ individual programmable output current for the 4 channels through 4 external resistors with a max. capability of 30 ma
■ absolute output current accuracy of max. ±7% and channel-to-channel mismatch of max. ± 4%
■ selectable charge pump enable/disable
■ thermal protection
■ small qfn20 (1.8 x 3.2 mm) package
stp4cmp应用:
■ mobile phone display backlighting
■ rgb led indicator drivers
2012-7-9 11:26:32 上传
下载附件 (26.05 kb)
图1.stp4cmp方框图
2012-7-9 11:26:32 上传
下载附件 (13.36 kb)
图2.stp4cmp应用框图
图2应用电路外接元件:
2012-7-9 11:26:32 上传
下载附件 (26.33 kb)
2012-7-9 11:22:41 上传
下载附件 (87.32 kb)
图3.stp4cmp评估板外形图
2012-7-9 11:26:32 上传
下载附件 (31.87 kb)
图4.stp4cmp评估板电路图
steval-tll012v1演示板
the steval-tll012v1 demonstration board demonstrates the performance of the stp4cmp, a charge pump based 4-channel led driver designed for rgb illumination or lcd display backlighting.
this device works off a battery with an input voltage between 2.7 v - 5.5 v. the device generates regulated current sinks with high absolute and channel-to-channel accuracy to drive up to 4 leds. it can support leds with forward voltage as high as 3.8 v.
the current sink for each channel can be set with 4 individual external resistors. each channel is controlled independently.
the pwm control can be applied directly to the 4 en (enable) inputs to provide brightness control.
steval-tll012v1演示板主要特性:
■ operating voltage range: 2.7 v to 5.5 v
■ full rgb function support
■ 4-channel led driver with individual on/off control directly from input pins
■ individual programmable output current for the 4 channels through 4 external resistors with a max. capability of 30 ma
■ absolute output current accuracy of max. ±7% and channel-to-channel mismatch of max. ± 4%
■ selectable charge pump enable/disable
■ thermal protection
■ rohs compliant
2012-7-9 11:22:41 上传
下载附件 (74.58 kb)
图5.steval-tll012v1演示板外形图
2012-7-9 11:26:32 上传
下载附件 (11.79 kb)
图6.steval-tll012v1演示板电路图
steval-tll012v1演示板材料清单:
2012-7-9 11:26:32 上传
下载附件 (29.25 kb)
详情请见:
cd00236423.pdf(855.77 kb, 下载次数: 0)2012-7-9 11:42:13 上传
下载次数: 0
下载积分: 积分 -1
和
dm00056350.pdf(245.64 kb, 下载次数: 0)2012-7-9 11:42:20 上传
下载次数: 0
下载积分: 积分 -1
诺基亚转型，旨在领导或“重新评估”细分用户群
腾讯红魔游戏手机400Hz采样率双IC独立触控肩键刷新行业记录
多创科技获数千万元A轮融资，加速高性能磁传感芯片及模组产业化
用于ECU的传感器模块、执行器等BOM风险评估
iPhone14来了！苹果官宣发布会时间
ST STP4CMP带电荷泵四路LED驱动解决方案
小型空气监测系统是什么
无功功率补偿介绍
移动在四省完成SDN单层控制器纳管多厂商设备现网试点
详解ChatGPT数据集之谜
全国人工智能应用技术技能大赛在山东省青岛市拉开帷幕
华为智慧养猪计划曝光
我心澎湃：松果处理器首款神机小米5C正式发布，起步1499元
永磁功能材料和软磁功能材料的区别
印度9月笔记本电脑进口量猛增30%
英振荡器是什么 石英振荡器的特点
延时开关电路的制作和调试以及应用
采用检测框架CoP通过控制偏好检测事实不一致
I2C总线能挂多少设备？I2C spec知识总结
iPhone8什么时候上市？iPhone8最新消息：iPhone8的Touch ID、销售额、上市时间大揭秘