LP5521TM

更新时间： 2024-02-07 23:31:02

品牌	Logo	应用领域
美国国家半导体 - NSC		显示驱动器驱动程序和接口接口集成电路
页数	文件大小	规格书
14页	323K
描述
Programmable Three Channel LED Driver

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中文翻译

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技术参数
数据手册

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LP5521TM 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
包装说明：	VFBGA, BGA20,4X5,16	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.07	Is Samacsys：	N
数据输入模式：	SERIAL	接口集成电路类型：	LED DISPLAY DRIVER
JESD-30 代码：	R-PBGA-B20	JESD-609代码：	e1
长度：	2.066 mm	湿度敏感等级：	1
复用显示功能：	NO	功能数量：	1
区段数：	3	端子数量：	20
最高工作温度：	85 °C	最低工作温度：	-30 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	VFBGA
封装等效代码：	BGA20,4X5,16	封装形状：	RECTANGULAR
封装形式：	GRID ARRAY, VERY THIN PROFILE, FINE PITCH	电源：	3/5 V
认证状态：	Not Qualified	座面最大高度：	0.675 mm
子类别：	Display Drivers	最大供电电压：	5.5 V
最小供电电压：	2.7 V	标称供电电压：	3.6 V
表面贴装：	YES	温度等级：	OTHER
端子面层：	Tin/Silver/Copper (Sn/Ag/Cu)	端子形式：	BALL
端子节距：	0.4 mm	端子位置：	BOTTOM
宽度：	1.717 mm	最小 fmax：	0.4 MHz
Base Number Matches：	1

LP5521TM 数据手册

June 2007

LP5521

Programmable Three Channel LED Driver

General Description

Features

■

The LP5521 is a three channel LED driver designed to pro-

duce variety of lighting effects for mobile devices. High effi-

ciency charge pump enables LED driving over full Li-Ion

battery voltage range. The device has a program memory for

creating variety of lighting sequences. When program mem-

ory has been loaded, LP5521 can operate independently

without processor control.

Adaptive charge pump with 1x and 1.5x gain provides up

to 95% LED drive efficiency

Charge pump with soft start and overcurrent/short circuit

protection

■

Low input ripple and EMI

■

Very small solution size, no inductor or resistors required

200 nA typical shutdown current

Automatic power save mode

LP5521 maintains excellent efficiency over a wide operating

range by automatically selecting proper charge pump gain

based on LED forward voltage requirements. LP5521 is able

to automatically enter power-save mode, when LED outputs

are not active and thus lowering current consumption.

I²C compatible interface

Independently programmable constant current outputs

with 8-bit current setting and 8-bit PWM control

Three independent LED channels have accurate pro-

grammable current sources and PWM control. Each channel

has program memory for creating desired lighting sequences

with PWM control.

Typical LED output saturation voltage 50 mV and current

matching 1%

Three program execution engines with flexible instruction

set

■

LP5521 has a flexible digital interface. Trigger I/O and 32 kHz

clock input allow synchronization between multiple devices.

Interrupt output can be used to notify processor, when LED

sequence has ended. LP5521 has four pin selectable I²C ad-

dresses. This allows connecting up to four parallel devices in

one I²C bus. GPO and INT pins can be used as a digital con-

trol pin for other devices.

Autonomous operation without external control

Large SRAM program memory

■

Two general purpose digital outputs

microSMD-20 package, 0.4 mm pitch

Bumped LLP-24 package, 0.5 mm pitch

LP5521 requires only four small and low cost ceramic capac-

itors.

Applications

Fun / indicator lights

■

LP5521 is available in tiny 2.1x1.7x0.6 mm microSMD-20

package and in 4.0x5.0x0.8 mm bumped LLP-24 package.

LCD sub-display backlighting

Keypad RGB backlighting and phone cosmetics

Comprehensive application tools are available, including

command compiler for easy LED sequence programming.

Vibra, speakers, waveform generator

■

Typical Application

20186270

201862

www.national.com

12 3 4 5 6 7...14

中文翻译

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与LP5521TM相关器件

型号	品牌	获取价格	描述	数据表
LP5521TM/NOPB	NSC	获取价格	IC LED DISPLAY DRIVER, PBGA20, 2.10 X 1.70 MM, 0.60 MM HEIGHT, 0.40 MM PITCH, ROHS COMPLIA
LP5521TM/NOPB	TI	获取价格	具有内部程序存储器和集成电荷泵的 3 通道 RGB/白色 LED 驱动器 \| YFQ \|
LP5521TMX	NSC	获取价格	Programmable Three Channel LED Driver
LP5521TMX/NOPB	NSC	获取价格	IC LED DISPLAY DRIVER, PBGA20, 2.10 X 1.70 MM, 0.60 MM HEIGHT, 0.40 MM PITCH, ROHS COMPLIA
LP5521TMX/NOPB	TI	获取价格	具有内部程序存储器和集成电荷泵的 3 通道 RGB/白色 LED 驱动器 \| YFQ \|
LP5521YQ	NSC	获取价格	Programmable Three Channel LED Driver
LP5521YQ/NOPB	TI	获取价格	具有内部程序存储器和集成电荷泵的 3 通道 RGB/白色 LED 驱动器 \| NJA \|
LP5521YQX	NSC	获取价格	Programmable Three Channel LED Driver
LP5521YQX/NOPB	NSC	获取价格	IC LED DISPLAY DRIVER, QCC24, 5 X 4 MM, 0.80 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, LLP
LP5521YQX/NOPB	TI	获取价格	具有内部程序存储器和集成电荷泵的 3 通道 RGB/白色 LED 驱动器 \| NJA \|

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