Datasheet > LM2759SD

LM2759SD

更新时间： 2024-11-13 05:42:03

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器开关接口集成电路闪光灯
页数	文件大小	规格书
14页	1304K
描述
1A Switched Capacitor Flash LED Driver with I2C Compatible Interface

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM2759SD 数据手册

June 10, 2010

LM2759

1A Switched Capacitor Flash LED Driver with I²C

Compatible Interface

General Description

Features

LM2759 is an integrated low-noise, high-current switched ca-

pacitor DC/DC converter with a regulated current source. The

device requires only four small ceramic capacitors making the

total solution area less than 22 mm²and the height less than

1 mm. The LM2759 is capable of driving loads up to 1A from

a single-cell Li-Ion battery. Maximum efficiency is achieved

over the input voltage range by actively selecting the proper

gain based on the LED forward voltage and current require-

ments.

Up to 1A Output Current

■

Solution Area < 22 mm²

No Inductor Required

90% Peak Efficiency

Adaptive 1x, 1.5x and 2x Gains for Maximum Efficiency

Load Disconnect in Shutdown

■

Accurate Input Current Control During Gain Transitions

Flash Time-Out

The LED current can be programmed up to 1A via an I²C-

compatible interface, along with eight selectable Flash Time-

Out durations. One high-current Flash LED can be driven

either in a high-power Flash mode or a low-power Torch

mode. The Strobe pin allows the flash to be toggled via a

Flash enable signal from a camera module. The TX input pin

limits the Flash LED current to the Torch current level during

a RF PA pulse, to reduce high loads on the battery. Internal

soft-start circuitry limits the amount of inrush current during

start-up.

TX Input Pin Ensures Synchronization with RF Power

Amplifier Pulse

Torch, Flash, and Indicator Modes

External Flash Enable via Strobe Input Pin

Strobe Input Disable via I²C

■

Programmable Flash Pulse Duration, and Torch and Flash

Currents via I²C-Compatible Interface

1MHz Constant Frequency Operation

■

Low Profile 12–Pin LLP (3mm x 3mm x 0.8mm)

LM2759 is offered in a small 12-pin thermally enhanced LLP

package.

Applications

Camera Flash in Cellular Phones

■

Typical Application Circuit

30069322

30069301

300693

www.national.com

12 3 4 5 6 7...14

中文翻译

下载PDF

与LM2759SD相关器件

型号	品牌	获取价格	描述	数据表
LM2759SD/NOPB	TI	获取价格	具有 I2C 兼容接口、1A 开关电容器 LED 闪光灯驱动器 \| DQB \| 12 \|
LM2759SDX	NSC	获取价格	1A Switched Capacitor Flash LED Driver with I2C Compatible Interface
LM2759SDX/NOPB	TI	获取价格	具有 I2C 兼容接口、1A 开关电容器 LED 闪光灯驱动器 \| DQB \| 12 \|
LM2760	NSC	获取价格	3.3V Regulated Switched Capacitor Voltage Converter
LM2760M5	NSC	获取价格	3.3V Regulated Switched Capacitor Voltage Converter
LM2760M5	ROCHESTER	获取价格	SWITCHED CAPACITOR REGULATOR, 750kHz SWITCHING FREQ-MAX, PDSO5, SOT-23, 5 PIN
LM2760M5/NOPB	ROCHESTER	获取价格	SWITCHED CAPACITOR REGULATOR, 750kHz SWITCHING FREQ-MAX, PDSO5, SOT-23, 5 PIN
LM2760M5X	NSC	获取价格	3.3V Regulated Switched Capacitor Voltage Converter
LM2765	NSC	获取价格	Switched Capacitor Voltage Converter
LM2765	TI	获取价格	50kHz 开关电容倍压器

与LM2759SD相关文章

国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

25
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

10
AMD宣布全球裁员约1000人，调整战略聚焦增长
2024-11-14

11
英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

32

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2759SD

LM2759SD 数据手册

与LM2759SD相关器件

与LM2759SD相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2759SD

LM2759SD 数据手册

与LM2759SD相关器件

与LM2759SD相关文章

您还可以找

您在本页遇到什么问题？