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参数资料
| 型号： | MCP1650DM-LED2 |
| 厂商： | Microchip Technology |
| 文件页数： | 15/28页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO FOR MCP1650 WHITE LED |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 15mA |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 32.4V |
| 特点： | 可调光 |
| 输入电压： | 2.7 ~ 4.5V |
| 已供物品： | 板 |
| 已用 IC / 零件： | MCP1650 |
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MCP1650/51/52/53
5.0
APPLICATION CIRCUITS/
ISSUES
5.1.1
NON-BOOTSTRAP BOOST
APPLICATIONS
Non-bootstrap applications are typically used when the
5.1 Typical Applications
The MCP1650/51/52/53 boost controller can be used in
several different configurations and in many different
applications. For applications that require minimum
space, low cost and high efficiency, the MCP1650/51/
52/53 product family is a good choice. It can be used in
boost, buck-boost, Single-Ended Primary Inductive
Converters (SEPIC), as well as in flyback converter
topologies.
output voltage is boosted to a voltage that is higher
than the rated voltage of the MCP1650/51/52/53. For
non-bootstrap applications, the input voltage is
connected to the boost inductor through the optional
current sense resistor and the V IN pin of the MCP1650/
51/52/53. For this type of application, the S-option
devices (UVLO at 2.55V, typical) should be used. The
gated oscillator duty cycle will be dependant on the
value of the voltage on V IN . If V IN > 3.8V, the duty cycle
will be 56%. If V IN < 3.8V, the duty cycle will be 80%.
In non-bootstrap applications, output voltages of over
100V can be generated. Even though the MCP1650/
51/52/53 device is not connected to the high boost
output voltage, the drain of the external MOSFET and
reverse voltage of the external Schottky diode are
connected. The output voltage capacitor must also be
rated for the output voltage.
3.3V to 12V 100 mA Boost Converter
V IN
8
R SENSE
0.05 ?
3
CS
Boost
Inductor
3.3 μH
MOSFET/Schottky
Combination Device
V OUT = 12V
I OUT = 0 to 100 mA
2
5
1
Input
Voltage
3.3V ±10%
C IN
10 μF
o ff
o n
GND
SHDN
NC 6
MCP1650
EXT
FB
4
7 NC
90.9 k ?
C OUT
10 μF
Ceramic
10 k ?
FIGURE 5-1:
Typical Non-Bootstrap Application Circuit (MCP1650/51/52/53).
? 2004 Microchip Technology Inc.
DS21876A-page 15
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| MCP1650EV | 功能描述:开发板和工具包 - PIC / DSPIC MCP1650 Boost Contr Eval Board RoHS:否 制造商:Microchip Technology 产品:Starter Kits 工具用于评估:chipKIT 核心:Uno32 接口类型: 工作电源电压: |
| MCP1650R-E/MS | 功能描述:直流/直流开关转换器 UVLO 2V 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 |
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| MCP1650REMS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:750 kHz Boost Controller |
| MCP1650REUN | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:750 kHz Boost Controller |
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