- 您现在的位置：买卖IC网 > PDF目录19521 > NCP1230D65R2 (ON Semiconductor)IC CTRLR PWM SMPS OVP OCP 8SOIC PDF资料下载
参数资料
| 型号： | NCP1230D65R2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 18/21页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM SMPS OVP OCP 8SOIC |
| 产品变化通告： | LTB Notification 03/Jan/2008 |
| 标准包装： | 2,500 |
| 输出隔离： | 隔离 |
| 频率范围： | 65kHz |
| 输入电压： | 8.4 V ~ 18 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 带卷 (TR) |
NCP1230
Frequency Jittering
Frequency jittering is a method used to soften the EMI
signature by spreading out the average switching energy
around the controller operating switching frequency. The
NCP1230 offers a nominal ± 6.4% deviation of the nominal
switching frequency. The sweep sawtooth is internally
generated and modulates the clock up and down with a 5 ms
period. Figure 41 illustrates the NCP1230 behavior:
62.4 kHz
Internal Ramp
65 kHz
67.6 kHz
Internal Sawtooth
5 ms
Figure 41. An Internal Ramp is used to Introduce Frequency Jittering on the Oscillator Saw Tooth
Thermal Protection
An internal Thermal Shutdown is provided to protect the
integrated circuit in the event that the maximum junction
temperature is exceeded. When activated (165 ° C typically)
the controller turns off the PWM Drive Output. When this
occurs, Vcc will drop (the rate is dependent on the NCP1230
loading and the size of the Vcc capacitor) because the
controller is no longer delivering drive pulses to the
auxiliary winding charging up the Vcc capacitor. When Vcc
drops below 4.0 volts and the Vccreset circuit is activated,
the controller will restart. If the user is using a fixed bias
supply (the bias supply is provided from a source other than
from an auxiliary winding, refer to the typical application )
and Vcc is not allow to drop below 4.0 volts under a thermal
shutdown condition, the NCP1230 will not restart. This
feature is provided to prevent catastrophic failure from
accidentally overheating the device.
http://onsemi.com
18
相关PDF资料 |
PDF描述 |
|---|---|
| RMM43DRXN | CONN EDGECARD 86POS DIP .156 SLD |
| GMK107BJ473MA-T | CAP CER 0.047UF 35V 20% X5R 0603 |
| AP1086D50L-U | IC REG LDO 5V 1.5A TO-252 |
| TAP475K050SRW | CAP TANT 4.7UF 50V 10% RADIAL |
| GMK107BJ333MA-T | CAP CER 0.033UF 35V 20% X5R 0603 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1230D65R2G | 功能描述:电流型 PWM 控制器 Low Standby Power High Performance PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1230GEVB | 功能描述:电源管理IC开发工具 ANA NCP1230 EVAL BOARD 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 |
| NCP1230P100 | 功能描述:交流/直流开关转换器 Low Standby Power RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| NCP1230P100G | 功能描述:电流型 PWM 控制器 Low Standby Power High Performance PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1230P133 | 功能描述:电流型 PWM 控制器 Low Standby Power RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
发布紧急采购，3分钟左右您将得到回复。