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STLD20D-C8

更新时间： 2024-09-24 22:40:27
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 显示驱动器驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
8页 72K
描述
WHITE LED POWER SUPPLY

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中文翻译

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STLD20D-C8 技术参数

是否Rohs认证：符合生命周期：Obsolete
零件包装代码：SOT-23包装说明：SOT-23, 8 PIN
针数：8Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.81Is Samacsys：N
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PDSO-G8
JESD-609代码：e3长度：2.9 mm
湿度敏感等级：1复用显示功能：NO
功能数量：1区段数：1
端子数量：8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：LSSOP封装等效代码：TSSOP8,.1
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260电源：3/4.4 V
认证状态：Not Qualified座面最大高度：1.45 mm
子类别：Display Drivers最大供电电压：5 V
最小供电电压：2.5 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
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：NOT SPECIFIED
宽度：1.625 mmBase Number Matches：1

STLD20D-C8 数据手册

 浏览型号STLD20D-C8的Datasheet PDF文件第2页浏览型号STLD20D-C8的Datasheet PDF文件第3页浏览型号STLD20D-C8的Datasheet PDF文件第4页浏览型号STLD20D-C8的Datasheet PDF文件第5页浏览型号STLD20D-C8的Datasheet PDF文件第6页浏览型号STLD20D-C8的Datasheet PDF文件第7页 
STLD20D  
®
WHITE LED POWER SUPPLY  
ASD™  
PRELIMINARY DATA  
FEATURES  
APPLICATION  
■
■
High efficiency above 80%  
Can drive up to 4 LEDs in series from 2.8V  
supply  
Constant LED current regulation  
Integrated LED disconnect switch that cuts the  
LEDs branch in shutdown mode  
Constant switching frequency  
Stable current regulation across the total input  
voltage range  
Supply voltage rejection  
Inherent soft start by limiting the peak inductor  
current  
Peak inductor current adjustability (STLD20D-  
C8 only)  
Shutdown pin with possibility of PWM dimming  
control  
Over voltage and over temperature protection  
with automatic restart  
Low shutdown current < 1µA  
Small external inductor (10µH, height < 2mm)  
Tiny ceramic external capacitor  
Can be supplied by a Li-ion battery - VIN range:  
2.5Vdc to 5Vdc  
■
■
■
■
White Led supply for LCD backlight  
Mobile phone  
PDA and organizers  
■
■
Any handsets powered from 2.8V to 4.2V  
DESCRIPTION  
■
■
The STLD20D is a constant switching frequency  
boost regulator with specific features to supply up  
to 4 white LEDs in series. A stable LED current  
regulation, from 2.8V to 4.2V, is achieved by sens-  
ing the LED current through a low ohmic shunt re-  
sistor RLED (see figure 1). The device also  
includes a supply rejection circuit that prevent any  
kind of flickering effect on the display during dy-  
namic supply voltage variation. A LED disconnect  
switch cut the LED branch to reduce the current  
consumption in shutdown mode. The maximum  
peak inductor current can be programmed. The  
STLD20D includes often numerous features and in-  
novative design circuit that allows getting an efficien-  
cy above 80% across the total supply voltage range.  
■
■
■
■
■
■
■
■
■
Figure 2: Efficiency versus input voltage  
(ILED=20mA; Tamb=25°C)  
Figure 1: Basic connection  
Efficiency (%)  
88  
87  
D
L = 10µH  
VBATT  
86  
85  
84  
83  
82  
81  
80  
79  
78  
Cin = 2.2µF  
Cout = 1µF  
SW  
VOUT  
RSET (*)  
ILED = 20mA  
RSET  
VIN  
STLD20D  
LDS  
FB  
SHDN  
D: STM BAT20J  
RLED  
GND  
2.5  
3
3.5  
4
4.5  
5
L: Murata LQH32CN100K33  
(*) STLD20D-C8 only  
Input voltage (Vdc)  
Table 1: Order Codes  
Part Number  
STLD20D-C8  
STLD20D-DEF  
Marking  
L2D  
Package  
SOT23-8L  
QFN 3x3 8L  
L2D  
October 2004  
REV. 2  
1/8  
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.  
12345678

中文翻译

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