参数资料
型号: AS3691B-ZMFT
厂商: ams
文件页数: 2/23页
文件大小: 0K
描述: IC LED DVR 400MA RGB/WHT 64-MLF
标准包装: 4,000
恒定电流:
拓扑: PWM
输出数: 4
内部驱动器:
类型 - 主要: 背光,通用
类型 - 次要: 颜色,RGB
输出电压: 15V
安装类型: *
封装/外壳: *
供应商设备封装: *
包装: *
工作温度: -20°C ~ 85°C

AS3691
Datasheet
Datasheet
AS3691
4 Precision 400mA Current Sources for RGB and Single Color Leds
1 General Description
?
Up to 15V
Automatic Supply Regulation’ to reduce power
15V is sufficient for most applications as the
The AS3691 (AS3691A and AS3691B) features four
high precision current sources for lighting of up to
four LED strings (RGB or single color leds). Each
of the four currents sources can be controlled
independently by PWM inputs. The full scale
current value is set by external resistors.
2 Key Features
4 x up to 0.4A constant current outputs
Programmable with external resistors
4 independent PWM inputs
Absolute current accuracy +/-0.5%
dissipation 1)
Very wide output voltage current source
voltage compliance
? Down to 0.41V
2)
Integrated overtemperature protection
Separate sense pads (Rfb1-Rfb4) for easy and
precise PCB Layout
Package
? DIE
? QFN24 4x4mm
? eP-TSSOP
2)
AS3691 dose not switch off the LED current
completely
1)
Patent Pending
3 Applications
General Lighting
Backlighting
RGB Backlighting for LCD TV/Monitors with
White Color Balancing
4 Application Diagrams
Figure 1 – Application Diagram of AS3691 for Single Color Lighting
VDD
UV
Csup
100nF
Cvdd
100nF
Rvdd
VDD
UV
VREG
UV1
CURR1
UV2
CURR2
UV3
CURR3
UV4
CURR4
AS3691
Vc
Vc
Vc
Vc
D1
Ref
T1
T2
T3
T4
Overtemp
R1
I1
R2
I2
R3
I3
R4
I4
Pad VSS
ON1
RFB1
RES1 ON2
RFB2
RES2 ON3
RFB3
RES3 ON4
RFB4
RES4
VSS
PWM
www.austriamicrosystems.com (ptr)
Ri1
Revision 2.3
Ri2
Ri3
Ri4
VSS
PWM
1 - 22
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AS3691BZQFP 制造商:ams 功能描述:T&R / QFN24 (4x4x0.5)
AS3691B-ZQFP 功能描述:IC LED DVR 400MA RGB/WH 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压(升压),切换式电容器(充电泵) 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP,10-MSOP(0.118",3.00mm 宽) 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C
AS3691B-ZSDF 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:4 Precision 400mA Current Sources for RGB and Single Color Leds
AS3691B-ZTSP 功能描述:IC LED DVR 400MA RGB/WH 20ETSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压(升压),切换式电容器(充电泵) 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP,10-MSOP(0.118",3.00mm 宽) 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C
as3691-module 制造商:ams 功能描述:AS3691 Series 4 Precision 400 mA Current Sources for RGB and Single Color Leds