WMSIC Electronic Components

PCA9956BTWY

ModelPCA9956BTWY
PackageTSSOP-38-EP
BrandNXP
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
NXP PCA9956BTWY
Type
NXP
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
PCA9956BTWY
Electronic Component
1
Package
TSSOP-38-EP
Type
DC-DC
Electronic Component
LEDDriver
Electronic Component
PWM; Analog
Electronic Component
0.38g
Electronic Component
1
Channel Count
24
Features
(SCP); LED; (OTP)
Electronic Component
BM0255022688
Operating Temperature
40℃~+85℃
Switching Frequency
31.25kHz
Electronic Component
4%

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

PCA9956BTWY 产品概述

一、概述与定位

PCA9956BTWY 是恩智浦(NXP)面向多通道恒流 LED 驱动的集成电路,封装为 TSSOP-38-EP(带散热焊盘)。器件工作电压范围为 DC 3.0V ~ 5.5V,集成 24 路输出通道,单通道输出能力高,适合需要多通道独立驱动与精细调光控制的照明和显示应用。

二、关键电气参数

  • 通道数:24 路输出,便于驱动多组 LED 或阵列。
  • 工作电压:3.0V ~ 5.5V,兼容常见系统电源。
  • 开关 / PWM 频率:31.25 kHz(用于 PWM 调光),可实现无可见闪烁的亮度控制。
  • 输出电流:单通道额定输出约 57 mA(部分应用资料或标注取值可达 65 mA),恒流精度约 ±4%。
  • 调光方式:支持 PWM 调光和模拟(电流)调光,灵活适配不同控制需求。
  • 保护特性:集成过温保护(OTP)和短路保护(SCP),提高系统可靠性。
  • 工作温度:-40℃ ~ +85℃,适合宽温环境。

三、封装与热管理

TSSOP-38-EP 封装带有裸露焊盘(exposed pad),有利于 PCB 散热设计。高密度多通道输出在大电流或高占空比下会产生热量,建议将裸露焊盘可靠焊接至大面积铜箔散热区,并在 PCB 设计中为热量扩散和温度监控预留空间与测点。合理布线、靠近电源旁路电容布置能有效抑制 EMI 与电压紊乱。

四、应用场景

适用于多通道 LED 背光、指示灯矩阵、照明条、建筑/装饰照明以及需要精细亮度控制的工业/消费类设备。高 PWM 频率有利于摄影/视频场景下消除频闪;内置保护可减少外部故障蔓延风险。

五、设计建议与注意事项

  • 电源去耦:在器件近侧放置低 ESR 去耦电容,抑制瞬态电流与开关噪声。
  • 散热设计:确保 exposed pad 完全焊接并接地,必要时在铜箔下方穿通孔以增强散热。
  • 输出布局:输出线尽量短且分散,避免高电流汇聚引起寄生阻抗和电压降。
  • 保护与监测:在系统设计中结合 OTP/SCP 响应策略(例如失效模式重启或降功率),并在关键通道加入电流检测或温度监测。
  • 调光匹配:根据显示或照明要求选择 PWM 或模拟调光,31.25 kHz PWM 适合避免肉眼可见闪烁,若用于高速成像需验证相位与曝光的相容性。

六、总结

PCA9956BTWY 是一款面向多通道、高精度恒流驱动的实用型 LED 驱动 IC,兼顾调光灵活性与保护功能,封装利于散热管理。对于需要可靠多路驱动与高频无闪烁调光的应用场景,采用该器件能简化系统设计并提升可靠性。在量产前建议结合实际 LED 负载与 PCB 布局做热仿真与长时间老化验证。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.