- 您现在的位置：买卖IC网 > Datasheet目录996 > NCP3066SCBCKGEVB (ON Semiconductor)EVAL BOARD FOR NCP3066SCBCKG Datasheet资料下载
参数资料
| 型号： | NCP3066SCBCKGEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR NCP3066SCBCKG |
| 设计资源： | NCP3066 Buck SOIC EVB BOM NCP3066SCBCKGEVB Gerber Files NCP3066 BUCK EVB Schematic |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 150mA |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 3.2V |
| 特点： | 亮度控制 |
| 输入电压： | 12V |
| 已供物品： | 板 |
| 已用 IC / 零件： | NCP3066 |
| 其它名称： | NCP3066SCBCKGEVBOS |
NCP3066, NCV3066
INTRODUCTION
The NCP3066 is a monolithic power switching regulator
optimized for LED Driver applications. Its flexible
architecture enables the system designer to directly
implement step ? up, step ? down, and voltage ? inverting
converters with a minimum number of external components
for driving LEDs. A representative block diagram is shown
in Figure 3.
Operating Description
The NCP3066 operates as a fixed oscillator frequency
output voltage ripple gated regulator. In general, this mode
of operation is somewhat analogous to a capacitor charge
pump and does not require dominant pole loop
compensation for converter stability. The typical operating
waveforms are shown in Figure 12. The output voltage
waveform is shown for a step ? down converter with the
ripple and phasing exaggerated for clarity. During initial
converter startup, the feedback comparator senses that the
output voltage level is below nominal. This causes the
output switch to turn on and off at a frequency and duty cycle
controlled by the oscillator, thus pumping up the output filter
comparator value, the output switch cycle is inhibited. When
the load current causes the output voltage to fall below the
nominal value feedback comparator enables switching
immediately. Under these conditions, the output switch
conduction can be enabled for a partial oscillator cycle, a
partial cycle plus a complete cycle, multiple cycles, or a
partial cycle plus multiple cycles.
Oscillator
The oscillator frequency and off ? time of the output switch
are programmed by the value of the timing capacitor C T . The
capacitor C T is charged and discharged by a 1 to 6 ratio
internal current source and sink, generating a positive going
sawtooth waveform at Pin 3. This ratio sets the maximum
t ON /(t ON + t OFF ) of the switching converter as 6/(6+1) or
85.7% (typical). The oscillator peak and valley voltage
difference is 500 mV typically. To calculate the C T capacitor
value for required oscillator frequency, use the equations
found in Figure 15. An online NCP3066 design tool can be
found at www.onsemi.com, which aids in selecting
component values.
capacitor. When the output voltage level reaches nominal
Figure 12. Typical Operating Waveforms
http://onsemi.com
7
相关PDF资料 |
PDF描述 |
|---|---|
| NCP5005GEVB | EVAL BOARD FOR NCP5005G |
| NCP5006EVB | EVAL BOARD FOR NCP5006 |
| NCP5030MTTXGEVB | EVAL BOARD FOR NCP5030MTTXG |
| NCP5602EVB | EVAL BOARD FOR NCP5602 |
| NCP5603GEVB | EVAL BOARD FOR NCP5603G HI FREQ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP3066SCBSTGEVB | 功能描述:电源管理IC开发工具 NCP3066 SOIC8 BOOST DB RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| NCP308MT090TBG | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| NCP308MT120TBG | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| NCP308MT125TBG | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| NCP308MT150TBG | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。