Datasheet> 器件分类 > 模拟混合信号IC> 驱动程序和接口> LT3491ESC8#PBF

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LT3491ESC8#PBF: 产品描述具有集成肖特基二极管的白光 LED 驱动器; 产品类别模拟混合信号IC 驱动程序和接口; 文件大小204KB，共4页; 制造商Linear ( ADI ); 官网地址http://www.analog.com/cn/index.html; 标准

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LT3491ESC8#PBF概述

具有集成肖特基二极管的白光 LED 驱动器

LT3491ESC8#PBF规格参数

参数名称	属性值
Brand Name	Linear Technology
是否Rohs认证	符合
厂商名称	Linear ( ADI )
零件包装代码	SC-70
包装说明	VSSOP, TSSOP8,.09,20
针数	8
制造商包装代码	SC8
Reach Compliance Code	compliant
ECCN代码	EAR99
Samacsys Description	LINEAR TECHNOLOGY - LT3491ESC8#PBF - LED DRIVER, 2.5-12V, 2.3MHZ, 8SC70
接口集成电路类型	LED DISPLAY DRIVER
JESD-30 代码	R-PDSO-G8
JESD-609代码	e3
长度	2 mm
湿度敏感等级	1
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	VSSOP
封装等效代码	TSSOP8,.09,20
封装形状	RECTANGULAR
封装形式	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）	260
电源	3 V
认证状态	Not Qualified
座面最大高度	1 mm
最大供电电压	12 V
最小供电电压	2.5 V
标称供电电压	3 V
表面贴装	YES
技术	BIPOLAR
温度等级	INDUSTRIAL
端子面层	Matte Tin (Sn)
端子形式	GULL WING
端子节距	0.5 mm
端子位置	DUAL
处于峰值回流温度下的最长时间	30
宽度	1.25 mm

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DEMO CIRCUIT 905

LT3491

QUICK START GUIDE

LT3491

LED Driver in SC70 With Built-in Schottky

WARNING!

DO NOT LOOK AT OPERATING LED.

This circuit produces light that can damage eyes.

DESCRIPTION

Demonstration circuit 905 is a LED Driver in SC70 W ith

Built-in Schottky f

eaturing the LT3491. The LT3491 is a

ixed f

requency step-up current mode DC/ converter.

There are tw o circuits on demonstration board 905. The

“Small Size” circuit generates 15mA LED current at the

smallest possible solution size. The “High Ef iciency”

circuit generates 20mA LED current at higher ef iciency.

The circuit outputs share 6 LEDs. At any given time, de-

pending on the positions of j

umpers, only one circuit is

in operation. Other f

eatures of the LT3491, such as the

internal schottky diode,the high sw itching f

requency and

the internal open circuit protection, allow tiny compo-

nents f both circuits. The input range of the demo

board is f

rom 3V to 5V. Dif erent dimming controls can

be implemented on the demo board. Please ref to the

quick start procedure. The high side current sensing f

ea-

ture of the LT3491 allow s “one w ire” current source, i.e.

the low side of the LED string can return to ground any-

w here.

The LT3491 datasheet gives a complete description of

the part,operation and application inf

ormation. The data-

sheet must be read in conj

unction w ith this quick start

guide f w orking on or modif

ying demo circuit 905.

Design files for t circuit board are available. Call

his

t LTC fact

ory.

,LTC and LT are registered trademarks ofLinear Technology Corporation. ThinSOT and

Pow erPath are trademarks ofLinear Technology Corporation.

PERFORMANCE SUMMARY

Specifications are at T

= 25°C

SYM BO L

OUT

OPEN

QSHDN

PAR AM ETER

Input Supply Range **

Output Current

Output Voltage

Eficiency

CAP pin Over-voltage Protection

Quiescent Current

Quiescent Current W hile in Shutdow n

Sw itching Frequency

CO NDI ON S

Small Size circuit

High Eficiency circuit

Small Size circuit

High Eficiency circuit

= 4.2V,Small Size circuit

= 4.2V,High Eficiency circuit

LED Open

= 4.2V,CTRL = ON

= 4.2V,CTRL = OFF

14.25

TYP

20.3

20.6

73.6

75.5

M AX

15.75

UN I

2.8

µA

M Hz

1.8

2.3

** The Input Supply R ange ofdemo circuit 905 is limited by the input capacitors. The input voltage absolute maximum

rating ofthe LT3491 is 12V.

LT3491ESC8#PBF相似产品对比

	LT3491ESC8#PBF	DC905A	LT3491EDC#TRMPBF	LT3491ESC8#TRMPBF
描述	具有集成肖特基二极管的白光 LED 驱动器	board eval for lt3491esc8	IC LED DRVR RGLTR DIM 260MA 6DFN	IC LED DRIVER RGLTR DIM SC70-8
Brand Name	Linear Technology	-	Linear Technology	Linear Technology
是否Rohs认证	符合	-	符合	符合
厂商名称	Linear ( ADI )	-	Linear ( ADI )	Linear ( ADI )
零件包装代码	SC-70	-	DFN	SC-70
包装说明	VSSOP, TSSOP8,.09,20	-	HVSON,	VSSOP,
针数	8	-	6	8
制造商包装代码	SC8	-	DC6	SC8
Reach Compliance Code	compliant	-	compliant	compliant
ECCN代码	EAR99	-	EAR99	EAR99
接口集成电路类型	LED DISPLAY DRIVER	-	LED DISPLAY DRIVER	LED DISPLAY DRIVER
JESD-30 代码	R-PDSO-G8	-	S-PDSO-N6	R-PDSO-G8
JESD-609代码	e3	-	e3	e3
长度	2 mm	-	2 mm	2 mm
湿度敏感等级	1	-	1	1
功能数量	1	-	1	1
区段数	1	-	1	1
端子数量	8	-	6	8
最高工作温度	85 °C	-	85 °C	85 °C
最低工作温度	-40 °C	-	-40 °C	-40 °C
封装主体材料	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	VSSOP	-	HVSON	VSSOP
封装形状	RECTANGULAR	-	SQUARE	RECTANGULAR
封装形式	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	-	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）	260	-	260	260
认证状态	Not Qualified	-	Not Qualified	Not Qualified
座面最大高度	1 mm	-	0.8 mm	1 mm
最大供电电压	12 V	-	12 V	12 V
最小供电电压	2.5 V	-	2.5 V	2.5 V
标称供电电压	3 V	-	3 V	3 V
表面贴装	YES	-	YES	YES
温度等级	INDUSTRIAL	-	INDUSTRIAL	INDUSTRIAL
端子面层	Matte Tin (Sn)	-	Matte Tin (Sn)	Matte Tin (Sn)
端子形式	GULL WING	-	NO LEAD	GULL WING
端子节距	0.5 mm	-	0.5 mm	0.5 mm
端子位置	DUAL	-	DUAL	DUAL
处于峰值回流温度下的最长时间	30	-	30	30
宽度	1.25 mm	-	2 mm	1.25 mm

LT3491ESC8#PBF

LT3491ESC8#PBF概述

LT3491ESC8#PBF规格参数

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