|
|
|
|
|
|
|
NCP1550SN33T1 DCD 的参数 |
| 控制方式
MODE |
PWM/PFM |
| 输入电压VIN
Input Voltage |
2.45~5.5V |
| 输出电压VOUT
Output Voltage |
3.3V |
| 输出电流IOUT
Output Current |
|
| 震荡频率FOSC
Oscillation Frequency |
600KHZ |
| 内置FET
Built-in FET |
|
| Description & Applications |
600 kHz PWM/PFM Step?Down DC?DC Controller ? High Efficiency 92%, Typical ? Low Quiescent Bias Current of 50 A (Typical at PFM Mode with No Load) ? Output Voltage Options from 1.8 V to 3.3 V with High Accuracy 2.0% ? Low Output Voltage Ripple, 50 mV, Typical ? PWM Switching Frequency at 600 kHz ? Automatic PWM/PFM Switchover at Light Load Condition ? Very Low Dropout Operation, 100% Max. Duty Cycle ? Chip Enable Pin with On?Chip 150 nA Pullup Current Source ? Low Shutdown Current, 0.3 A, Typical ? Input Voltage Range from 2.45 V to 5.5 V ? Built?in Soft?Start ? Internal Undervoltage Lockout (UVLO) Protection ? Low Profile and Minimum External Components ? Micro Miniature TSOP?5 Package ? Pb?Free Packages are Available ? Personal Digital Assistant (PDA) ? Camcorders and Digital Still Camera ? Hand?Held Instrument ? Distributed Power System ? Computer Peripheral |
| 描述与应用 |
600 kHz的PWM/ PFM降压型DC-DC控制器 ?高效率92％，典型 ?低静态电流偏置电流为50？ （典型值在PFM模式下无负载） ?从1.8 V至3.3 V的输出电压选项 高精度2.0％ ?低输出电压纹波，50 mV的典型 ?PWM开关频率在600千赫 ?PWM / PFM自动切换在轻负载条件 ?非常低压差操作，最大100％。占空比 ?芯片使能引脚片150 nA的上拉电流源 ?低关断电流，0.3 A，典型？ ?输入电压范围从2.45 V至5.5 V ?内置软启动 ?内部欠压锁定（UVLO）保护 ?低调，最少的外部元件 ?微小型TSOP-5封装 ?无铅包可用 ?个人数字助理（PDA） ?摄像机和数码相机 ?手持式仪器 ?分布式电源系统 ?电脑周边设备 |
| 技术文档PDF下载 |
在线阅读  |
|
|
|
|
|
相关型号列表 |
|
|
|
