CXSU63169是一个电流模式和固定频率升压转换器，带有集成N-FET，可串联驱动多达8个白色LED。串联允许LED电流相同，亮度均匀。它的低导通电阻和反馈电压降低了功率损耗，实现了高效率。快速的1MHz电流模式的脉宽调制操作可用于输入和输出电容器和一个小电感，同时最小化输入电源上的纹波
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产品概述 返回TOP
The CXSU63169A/B/C is a current-mode and fixed frequency boost converter with an integrated N-FET to drive up to 8 white LEDs in series. The series connection allows the LED current to be identical for uniform brightness. Its low on-resistance of NFET and feedback voltage reduce power loss and achieve high efficiency. Fast 1MHz current-mode PWM operation is available for input and output capacitors and a small inductor while minimizing ripple on the input supply. The OVP pin monitors the output voltage and stops switching if exceeds the over-voltage threshold. An internal softstart circuit eliminates the inrush current during start-up. The CXSU63169A/B/C also integrates under-voltage lockout, over-temperature protection, and current-limit circuits. The CXSU63169/A/B/C is available in a SOT-23-6 packages.
产品特点 返回TOP
z Wide Input Voltage from 2.7V to 6V
z 0.25V Reference Voltage
z Fixed 1MHz Switching Frequency
z High Efficiency up to 87%
z 100Hz to 100kHz PWM Brightness Control Frequency
z Open‐LED Protection
z Under‐Voltage Lockout Protection
z Over‐Temperature Protection
z<1mA Quiescent Current Dduring Shutdown
z SOT‐23‐6 Packages
z Lead Free and Green Devices Available
z (RoHS Compliant)
应用范围 返回TOP
z White LED Display Backlighting
z Cell Phone and Smart Phone
z PDA, PMP, MP3
z Digital Camera
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产品封装图 返回TOP
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| Step-up Converter | ||||||
| Part No. | Input Voltage | Output Voltage | Current MAX | Frequency | Efficiency | Package |
| CXSU63168 | 6V | 20V | 350mA | 1.25MHz | 90% | SOT23-6 |
| CXSU63169 | 6V | 20V/28V/35V | 1A | 1MHz | 90% | SOT23-6 |
| CXSU63170 | 6V | 24V | 2A | 1.5MHz | 90% | SOT23-6 |
| CXSU63171 | 6V | 6V | 2A | 1MHz | 90% | SOT23-6 |
| CXSU63172 | 6V | 20V | 2A | 1.5MHz | 88% | SOT23-5 |
| CXSU63173 | 6V | 20V | 2A | 1.5MHz | 88% | SOT23-6 |
| CXSU63174 | 20V | 30V | 3.5A | 1.2MHz | 95% | DFN-10 |
| CXSU63175 | 6V | --V | --A | 1MHz | 90% | SOP-8/TSSOP-8 |
| CXSU63176 | 6V | 6V | 2A | 1MHz | 95% | SOT23-6 |
| CXSU63177 | 5V | 5V | 2.1A | 1.2MHz | 92% | /DFN-12/QFN-16QFN-16 |
| CXSU63178 | 5V | 5V | 2.1A | 1.2MHz | 92% | ESOP-8 |
| CXSU63179 | 5V | 5V | 6A | 1.2MHz | 92% | ESOP-8 |
◀ 上一篇:升压型DC/DC转换器1.25MHz固定开关频率PWM调光CXSU63168单电池锂离子电池以恒定电流串联驱动5个白色LED
下一篇▶:电流模式和固定频率升压转换器CXSU63170输入电压从2.7伏到6伏集成N-FET来驱动白色LED低导通电阻和低反馈电压降低了功率损耗
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