Datasheet > 驱动程序和接口 > 显示驱动器> LM2795TL/NOPB

LM2795TL/NOPB

更新时间： 2024-11-13 13:09:23

品牌	Logo	应用领域
美国国家半导体 - NSC		开关
页数	文件大小	规格书
16页	484K
描述
IC,LASER DIODE/LED DRIVER,CMOS,BGA,14PIN,PLASTIC

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技术参数
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LM2795TL/NOPB 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	BGA, BGA14,3X4,34/20	Reach Compliance Code：	compliant
风险等级：	5.84	JESD-30 代码：	R-PBGA-B14
JESD-609代码：	e1	湿度敏感等级：	1
端子数量：	14	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：	BGA	封装等效代码：	BGA14,3X4,34/20
封装形状：	RECTANGULAR	封装形式：	GRID ARRAY
电源：	3.3/5 V	认证状态：	Not Qualified
子类别：	Display Drivers	表面贴装：	YES
技术：	CMOS	温度等级：	OTHER
端子面层：	Tin/Silver/Copper (Sn/Ag/Cu)	端子形式：	BALL
端子节距：	0.5 mm	端子位置：	BOTTOM
Base Number Matches：	1

LM2795TL/NOPB 数据手册

March 2004

LM2794/LM2795

Current Regulated Switched Capacitor LED Supply with

Analog and PWM Brightness Control

General Description

Features

n Regulated current sources with 0.5% matching

between any two outputs

The LM2794/95 is a fractional CMOS charge-pump that

provides four regulated current sources. It accepts an input

voltage range from 2.7V to 5.5V and maintains a constant

current determined by an external sense resistor.

n High efficiency 3/2 boost function

n Drives one, two, three or four white LEDs

n 2.7V to 5.5V Input Voltage

n Up to 80mA output current

n Analog brightness control

n Active-low or high shutdown input (’94/95)

n Very small solution size and no inductor

n 2.3µA (typ.) shutdown current

n 325kHz switching frequency (min.)

n Constant Frequency generates predictable noise

spectrum

n Standard Micro SMD-14 package: 2.08mm X 2.403mm

X 0.845mm High

n Thin Micro SMD-14 package: 2.08mm X 2.403mm X

0.600mm High

The LM2794/5 delivers up to 80mA of load current to accom-

modate four White LEDs. The switching frequency is

325kHz. (min.) to keep the conducted noise spectrum away

from sensitive frequencies within portable RF devices.

Brightness can be controlled by both linear and PWM tech-

niques. A voltage between 0V and 3.0V may be applied to

the BRGT pin to linearly vary the LED current. Alternatively,

a PWM signal can be applied to the SD pin to vary the

perceived brightness of the LED. The SD pin reduces the

operating current to 2.3µA (typ.) The LM2794 is shut down

when the SD pin is low, and the LM2795 is shut down when

the SD pin is high.

The LM2794/95 is available in a micro SMD-14 CSP pack-

age.

Applications

n White LED Display Backlights

n White LED Keypad Backlights

n 1-Cell Li-Ion battery-operated equipment including

PDAs, hand-held PCs, cellular phones

Basic Application Circuit

20028503

DS200285

www.national.com

12 3 4 5 6 7...16

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与LM2795TL/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LM2795TLX	NSC	获取价格	Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
LM2795TLX/NOPB	NSC	获取价格	IC SWITCHED CAPACITOR REGULATOR, 675 kHz SWITCHING FREQ-MAX, PBGA14, CSP-14, Switching Reg
LM2796	NSC	获取价格	Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
LM2796	TI	获取价格	具有 3/2x 开关电容器升压的双显示白光 LED 驱动器
LM27961	NSC	获取价格	Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
LM27961TL	NSC	获取价格	Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
LM27961TLX	NSC	获取价格	Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
LM27961TLX/NOPB	TI	获取价格	LED DISPLAY DRIVER, PBGA18, 2.10 X 2.40 MM, 0.60 MM HEIGHT, TLA-18
LM27964	NSC	获取价格	White LED Driver System with I2C Compatible Brightness Control
LM27964	TI	获取价格	LM27964 White LED Driver System with I2C Compatible Brightness Control

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