参数资料
| 型号： | APGRD004 |
| 厂商： | Microchip Technology |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | REF DESIGN MOD AUTO AMBNT LIGHT |
| 产品培训模块： | Microchip MCP20xx LIN Transceiver Overview |
| 标准包装： | 1 |
| 主要目的： | 照明，RGB LED 控制器 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | MCP2021，PIC12F615 |
| 主要属性： | 4 Tiny 板，每个板带：RGB LED，LIN 收发器，稳压器，MCU |
| 次要属性： | 对 LIN 指令加以解释，以控制 16,383 种颜色和 1,023 种调光级 |
| 已供物品： | 4 个板，CD |
| 产品目录页面： | 659 (CN2011-ZH PDF) |
| 相关产品： | PIC12F615-I/MF-ND - IC PIC MCU FLASH 1KX14 8DFN PIC12F615T-I/MF-ND - IC PIC MCU FLASH 1KX14 8DFN PIC12F615-E/MF-ND - IC PIC MCU FLASH 1KX14 8DFN MCP2021T-500E/SNTR-ND - IC LIN TXRX ON-BOARD VREG 8SOIC MCP2021T-500E/MDTR-ND - IC LIN TXRX ON-BOARD VREG 8DFN MCP2021T-330E/SNTR-ND - IC LIN TXRX ON-BOARD VREG 8SOIC MCP2021T-330E/MD-ND - IC LIN TXRX ON-BOARD VREG 8DFN MCP2021-500E/SN-ND - IC LIN TXRX ON-BOARD VREG 8SOIC MCP2021-500E/P-ND - IC LIN TXRX ON-BOARD VREG 8DIP MCP2021-500E/MD-ND - IC LIN TXRX ON-BOARD VREG 8DFN 更多... |
LED Lighting Solutions
Driving LEDs with a Charge Pump
A charge pump power supply does not have inductors that
are required in other SMPS topologies. This provides a
more compact and less expensive circuit. The downside is
that charge pumps cannot supply large amounts of current
compared to the other topologies. Charge pump circuits
are most useful for backlighting applications. Common
applications include PCs, LCD displays and automotive
instrumentation.
MCP1252 Charge Pump Backlight
Demonstration Board (MCP1252DM-BKLT)
Demonstrates the use of a charge
pump device in an LED application
and acts as a platform to evaluate
the MCP1252 device in general.
Light intensity is controlled
uniformly through the use of ballast
resistors. A PIC10F206 MCU
provides an enable signal to the MCP1252 and accepts a
push-button input that allows the white LEDs to be adjusted
to five different light intensities.
Literature on the Web
■ MCP1252/3 Data Sheet, DS21572
■ MCP1252 Charge Pump Backlight Demo Board
Driving LEDs with a Boost Regulator
A boost regulator topology is used when the output voltage
of the converter must be equal to or greater than the input
voltage. A boost regulator is useful for driving a chain of
LEDs connected in series. It is beneficial to drive multiple
LEDs in series. This ensures that all LEDs receive the same
amount of current and will have the same brightness level.
Using a coupled inductor in the boost circuit reducing the
switching voltage requirements of the MOSFET switch.
The MCP1640 synchronous boost regulator can provide
a stable operating voltage for an LED from a single cell
alkaline battery.
The MCP1650 Boost Regulator uses an external switch
so that it can be used for any type of load. An additional
advantage of the MCP1650 in battery applications is the
Gated Oscillator Architecture which provides 2 duty cycles
reducing high-peak inductor current and output ripple
voltages. Input voltages above 3.8V engage a 56% duty
cycle and an 80% duty cycle when the input voltage drops
below 3.8V, extending battery life in these applications.
MCP1640 Single Cell Synchronous Boost Regulator
L 1
4.7 μH
User’s Guide, DS51551
■ MCP1252/3 Evaluation Kit User’s Guide, DS51313
■ DG10 – Power Solutions Design Guide, DS21913
V IN
0.9V to 1.7V
V IN
SW
V OUT
V OUT
3.3V @ 100 mA
C IN
4.7 μF
MCP1640
EN V FB
976 KΩ
C OUT
10 μF
562 KΩ
GND
Charge Pump LED Driver Using the MCP1252
5
C-
6
C+
3
V IN
V OUT
2
Single
Li-Ion
Cen
7
MCP1252-ADJ
SHDN FB
8
1
PG
GND
4
PWM Brightness
Control
4
LED Lighting Solutions Design Guide
www.microchip.com/lighting
相关PDF资料 |
PDF描述 |
|---|---|
| ARD00280 | KIT REF DESIGN PIC18F87J72 1PH |
| ARD00330 | DAUGHTER BOARD PIC18F87J72 |
| AS168X-CB2F200N | CIRCUIT BRKR THERMAL 20A 2POLE |
| AS168X-CB3DF150-618 | CIRCUIT BRKR THERMAL 15A 3POLE |
| AS168X-CB3G300 | CIRCUIT BRKR THERMAL 30.0A 3POLE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| APGSABA | 制造商:OMRON AUTOMATION AND SAFETY 功能描述:CUSTOM SHUTTER ASSEMBLY 制造商:OMRON Industrial Automation 功能描述:CUSTOM SHUTTER ASSEMBLY |
| APG-SA-BA | 制造商:OMRON AUTOMATION AND SAFETY 功能描述:CUSTOM SHUTTER ASSEMBLY 制造商:OMRON Industrial Automation 功能描述:CUSTOM SHUTTER ASSEMBLY 制造商:Omron Corporation 功能描述:Custom Shutter Assembly 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:Custom Shutter Assembly |
| AP-GT1-1P-2428/1.6C(90) | 制造商:Hirose 功能描述:AP-GT1-1P-2428/1.6C(90) |
| APGT1-1P-2428/1.6C(91 | 制造商:Hirose 功能描述:APGT1-1P-2428/1.6C(91 |
| APGT1-1P-2428/1.6C-WS(61) | 制造商:Hirose 功能描述:APGT1-1P-2428/1.6C-WS(61) |
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