Datasheet > SGM37603A

SGM37603A

更新时间： 2024-11-19 11:08:15

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
19页	947K
描述
Highly Efficient 3-String White LED Driver

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

SGM37603A 数据手册

SGM37603A

High Efficiency 3-String White LED Driver

GENERAL DESCRIPTION

FEATURES

● 12-Bit Resolution for Dimming Control

● Up to 90% Boost Efficiency

● Switching Frequency: 1.2MHz

● Support 1 to 3 LED Strings in Parallel at Maximum

29.5V Output

The SGM37603A is a high efficiency 3-string white LED

driver with a 1.2MHz boost converter. The supply

voltage operates from 3V to 24V. The SGM37603A is

capable of driving up to 8 LEDs in series for 40mA

maximum LED current per string while achieving high

conversion efficiency. An adaptively current-regulated

method allows different LED string voltages while LED

current remains in regulation. The LED current is

programmed through an I²C interface or a PWM signal

input. These features make it optimized for compact

solutions and ideal for LCD display backlighting.

● 11% LED Current Matching across Process,

Voltage and Temperature at I_LED= 12.21μA

● 1% LED Current Matching across Process,

Voltage and Temperature at I_LED= 25mA

● 11% LED Current Accuracy across Process,

Voltage and Temperature at I_LED= 12.21μA

● 3% LED Current Accuracy across Process,

Voltage and Temperature at I_LED= 25mA

● PWM Dimming Interface

The SGM37603A is available in Green WLCSP-

1.78×1.36-12B and TDFN-3×3-12L packages. It

operates over the -40℃ to +85℃ temperature range.

● Programmable I²C Interface

● Phase Shift Function

● Hybrid PWM + Current Dimming for Higher LED

Driver Optical Efficiency

APPLICATIONS

● Low EMI by Conducting Ringing Cancelling

● Protection Features

Power Source for Smart Phone and Tablet Backlighting

 Over-Voltage Protection

 Over-Current Protection

 Thermal Shutdown

TYPICAL APPLICATION

Up to 28V Output

VLF504012MT-100M

V_IN

3V to 24V

10μH

R₃

10Ω

C₁

22μF

C_OUT

1μF

C_IN

2.2μF

VIO

OUT

R₁

10kΩ

R₂

10kΩ

SGM37603A

SDA

SCL

LED1

LED2

LED3

GND

SDA

SCL

PWM

HWEN

Figure 1. Typical Application

SG Micro Corp

SEPTEMBER 2021 – REV. A. 2

www.sg-micro.com

12 3 4 5 6 7...19

中文翻译

下载PDF

与SGM37603A相关器件

型号	品牌	获取价格	描述	数据表
SGM37604A	SGMICRO	获取价格	Highly Efficient 4-String White LED Driver
SGM3766	SGMICRO	获取价格	38V High Efficiency, Boost White LED Driver with PWM Dimming Control
SGM3785	SGMICRO	获取价格	2MHz, 1.5A Flash LED Driver
SGM3785S	SGMICRO	获取价格	2MHz, 1.5A Flash LED Driver
SGM37861	SGMICRO	获取价格	4MHz，~1A自适应LED闪光灯驱动器
SGM37891	SGMICRO	获取价格	单路，无电感具有手电筒模式的 LED 闪光驱动器
SGM37892	SGMICRO	获取价格	单路，无电感具有手电筒模式的 LED 闪光驱动器
SGM37895	SGMICRO	获取价格	独立双路，无电感具有手电筒模式的 LED 闪光驱动器
SGM3795	SGMICRO	获取价格	700mA Quad Channel Constant Current LED Driver
SGM3799	SGMICRO	获取价格	0.5Ω, Low Voltage Dual, DPDT Analog Switch