收藏本站
MAX16841
Controller IC for Dimmable Offline LED Lamps
Circuit components R11, R12, C15, Q6, Q7, R13, and
R14 are used to control the input current. Q6 and Q7
are matched transistors. The voltage on C15 represents
the average input voltage. The average voltage is then
used to control the current in the current-mirror circuit
formed by R12, R13, R14, Q6, and Q7. The current
flowing into R12 is approximately proportional to the
voltage across C15 and is now reflected on the collector
of Q6, and sinks the same amount of current from the
collector of Q7 that flows into R12. Inside the device is
a 50 F A current source. The current flowing into R16 sets
the input current, or the average current flowing into R20.
The circuit tries to keep the input power over the line volt-
age almost constant.
DB+
L3
D2
LED+
AC1
F1
L1
1
D1
3
2
R22
C14
C9
R23
R24
C10
C11
C12
LED-
R1
DB-
4
C2
G
Q2
D10
R5
D6
15V
C13
L5
R26
C1
R3
R34
AC2
R2
L2
Q1
D4
C8
DB+
DB+
R7
DB+
R11
C15
R8
Q3
4
U1
DIMOUT
IN
8
IN
D3
18V
R4
R12
R9
MAX16841
C5
D12
R6
Q5
G
Q6
REFI
Q7
R10
REFI
3
1
TH
REFI
NDRV
CS
7
6
R21
Q4
DB-
C16
R13
R14
R16
R18
R20
C3
C4
2
COMP
GND
5
R17
Figure 1. Nonisolated (Buck) Topology
Maxim Integrated
9
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MAX19515EVKIT+ KIT EVAL FOR MAX19515 ADC
MAX44000EVKIT# KIT EVAL FOR MAX44000
MAX5312EVKIT+ KIT EVAL FOR MAX5312
MAX5550EVKIT+ KIT EVAL FOR MAX5550
MAX5891EVKIT# KIT EVALUATION FOR MAX5891
MAX6629EVKIT EVAL KIT FOR MAX6629
MAX6635EVKIT+ EVALUATION KIT FOR MAX6635
MAX6639EVKIT+ EVALUATION KIT FOR MAX6639/F
相关代理商/技术参数
MAX16842ASA+ 功能描述:模数转换器 - ADC New RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX16842ASA+T 功能描述:模数转换器 - ADC New RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX1684EEE 功能描述:直流/直流开关转换器 14V 1A PWM Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX1684EEE+ 功能描述:直流/直流开关转换器 14V 1A PWM Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX1684EEE+ 制造商:Maxim Integrated Products 功能描述:SEMICONDUCTOR ((NW))
MAX1684EEE+T 功能描述:直流/直流开关转换器 14V 1A PWM Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX1684EEE-G1105 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX1684EEE-G115 制造商:Maxim Integrated Products 功能描述: