Datasheet > 935285129118

935285129118

更新时间： 2024-11-21 20:45:07

品牌	Logo	应用领域
恩智浦 - NXP		驱动光电二极管接口集成电路
页数	文件大小	规格书
54页	410K
描述
IC LED DISPLAY DRIVER, PDSO28, 4.40 MM, PLASTIC, MO-153, SOT361-1, TSSOP-28, Display Driver

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935285129118 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	TSSOP
包装说明：	TSSOP,	针数：	28
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.03
数据输入模式：	SERIAL	接口集成电路类型：	LED DISPLAY DRIVER
JESD-30 代码：	R-PDSO-G28	JESD-609代码：	e4
长度：	9.7 mm	湿度敏感等级：	1
复用显示功能：	NO	功能数量：	1
区段数：	16	端子数量：	28
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1.1 mm	最大供电电压：	5.5 V
最小供电电压：	2.3 V	标称供电电压：	3 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	4.4 mm
最小 fmax：	1 MHz	Base Number Matches：	1

935285129118 数据手册

PCA9685

16-channel, 12-bit PWM Fm+ I²C-bus LED controller

Rev. 02 — 16 July 2009

Product data sheet

1. General description

The PCA9685 is an I²C-bus controlled 16-channel LED controller optimized for LCD

Red/Green/Blue/Amber (RGBA) color backlighting applications. Each LED output has its

own 12-bit resolution (4096 steps) ﬁxed frequency individual PWM controller that operates

at a programmable frequency from a typical of 40 Hz to 1000 Hz with a duty cycle that is

adjustable from 0 % to 100 % to allow the LED to be set to a speciﬁc brightness value.

All outputs are set to the same PWM frequency.

Each LED output can be off or on (no PWM control), or set at its individual PWM controller

value. The LED output driver is programmed to be either open-drain with a 25 mA current

sink capability at 5 V or totem pole with a 25 mA sink, 10 mA source capability at 5 V. The

PCA9685 operates with a supply voltage range of 2.3 V to 5.5 V and the inputs and

outputs are 5.5 V tolerant. LEDs can be directly connected to the LED output (up to

25 mA, 5.5 V) or controlled with external drivers and a minimum amount of discrete

components for larger current or higher voltage LEDs.

The PCA9685 is in the new Fast-mode Plus (Fm+) family. Fm+ devices offer higher

frequency (up to 1 MHz) and more densely populated bus operation (up to 4000 pF).

Although the PCA9635 and PCA9685 have many similar features, the PCA9685 has

some unique features that make it more suitable for applications such as LCD backlighting

and Ambilight:

• The PCA9685 allows staggered LED output on and off times to minimize current

surges. The on and off time delay is independently programmable for each of the

16 channels. This feature is not available in PCA9635.

• The PCA9685 has 4096 steps (12-bit PWM) of individual LED brightness control. The

PCA9635 has only 256 steps (8-bit PWM).

• When multiple LED controllers are incorporated in a system, the PWM pulse widths

between multiple devices may differ if PCA9635s are used. The PCA9685 has a

programmable prescaler to adjust the PWM pulse widths of multiple devices.

• The PCA9685 has an external clock input pin that will accept user-supplied clock

(50 MHz max.) in place of the internal 25 MHz oscillator. This feature allows

synchronization of multiple devices. The PCA9635 does not have external clock input

feature.

• Like the PCA9635, PCA9685 also has a built-in oscillator for the PWM control.

However, the frequency used for PWM control in the PCA9685 is adjustable from

about 40 Hz to 1000 Hz as compared to the typical 97.6 kHz frequency of the

PCA9635. This allows the use of PCA9685 with external power supply controllers. All

bits are set at the same frequency.

• The Power-On Reset (POR) default state of LEDn output pins is LOW in the case of

PCA9685. It is HIGH for PCA9635.

12 3 4 5 6 7...54

中文翻译

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