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PCA9635PW,118 PCA9635PW
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- NXP PCA9635PW, 118
- Type
- NXP
- Minimum package
- 2500 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- PCA9635PW,118
- Electronic Component
- 1
- Package
- TSSOP-28
- Electronic Component
- LEDDriver
- Electronic Component
- PWM
- Electronic Component
- 0.226g
- Electronic Component
- 1
- Channel Count
- 16
- Electronic Component
- BM0231111066
- Operating Temperature
- 40℃~+85℃
- Switching Frequency
- 100kHz~1MHz
- Output Voltage
- 5.5V
- Output Current
- 25mA
- Operating Voltage(DC)
- 2.3V~5.5V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PCA9635PW,118 产品概述
一 产品简介
PCA9635PW,118 是恩智浦（NXP）推出的一款 16 通道线性 LED 驱动器，封装为 TSSOP-28。器件工作电压范围为 2.3V 至 5.5V，单通道线性输出电流可达 25mA，支持 PWM 调光，开关/调光频率可配置于 100kHz 至 1MHz 范围内，输出耐压不超过 5.5V。器件工作温度范围为 -40℃ 至 +85℃，适合多数工业和消费类应用。
二 主要特性
- 16 路独立线性电流输出，最大 25mA/通道，适用于小功率 LED 阵列与指示灯。
- 工作电压 2.3V–5.5V，输出端最大允许电压 5.5V，便于直接驱动常见单色或低压串联的 LED。
- PWM 调光支持 100kHz–1MHz 的调光频率范围，可用于减少闪频干扰或满足高频调光需求。
- TSSOP-28 封装，便于中等密度 PCB 布局与自动贴装加工。
- 宽温度等级（-40℃~+85℃），适合室内/室外及工业环境使用。
三 功能与性能亮点
线性恒流输出可提供优良的色彩一致性和无 PWM 周边噪声干扰（相对于开关式驱动器），在需要精确亮度控制与逐通道灰度一致性的场合具有优势。高达 25mA 的驱动能力满足大多数指示灯和小型背光需求；可调 PWM 频率便于在视觉与 EMI 限制之间做平衡。
四 应用场景
- 仪器仪表与面板指示灯阵列
- 消费电子（按键背光、指示灯、状态显示）
- 工业控制柜与通讯设备指示
- 小型平面照明与装饰灯条（低功耗场合）
五 设计与布局建议
- 由于为线性下降式（sink）输出，功耗随 (Vled_drop × Iout) 而增加，设计时需评估功率耗散并预留足够散热路径。持续 25mA 工作时，若 LED 正向压降较低，IC 自身会承受较大功耗，建议在 PCB 上布置散热铜箔及必要的热沉方案。
- 输出端通常作为电流下拉端使用，LED 阳极接电源，阴极接驱动器输出。请确保输出电压与 LED 串联总压不超过器件最大额定值。
- 对于高速 PWM，走线与旁路电容布局要紧凑，电源端使用低 ESR 去耦电容以降低噪声。
- TSSOP-28 引脚排布易于与常见 MCU 或外设接口对接，放置时注意热扩散和定向，避免靠近高热源元件。
六 选型要点与替代建议
选择 PCA9635PW,118 时，重点关注所驱动 LED 的总压降、每通道电流需求与系统允许的功耗。当应用需更高效率或更高电流时，可考虑开关式 LED 驱动器；若通道数或控制特性不同，可参考同系列或其他厂商的多通道 LED 驱动器。
七 小结
PCA9635PW,118 提供 16 路线性恒流输出、25mA 驱动能力与可调高频 PWM 调光，适合对亮度一致性与调光线性要求较高的中低功率 LED 应用。合理的散热与电源去耦设计是保证长期可靠性的关键。若需详细引脚定义与寄存器配置，请参考恩智浦官方数据手册以完成电路与固件设计。
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