NCP1253BSN65T1G
ON(安森美)
TSOP-6
16+
3000/盘
马来
类型:贸易/代理/分销
电话:
0755-82549943
0755-82549943
0755-82549943
手机:13714022523
15919934827
18948774678
联系人:陈小姐/王先生/陈先生
邮箱:qixiudz@163.com
地址:广东深圳福田区新亚洲电子城4B025a室
ON安森美电源管理芯片NCP1253BSN65T1G 全新进口原装现货,欢迎来电咨询洽谈订购!
Current-Mode PWM Controller for Off-line Power Supplies The NCP1253 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a tiny TSOP−6 package. With a supply range up to 28 V, the controller hosts a jittered 65 kHz or 100 kHz switching circuitry operated in peak current mode control. When the power on the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while limiting the peak current. To avoid sub harmonic oscillations in CCM operation, adjustable slope compensation is available via the series inclusion of a simple resistor in the current sense signal. Besides the auto−recovery timer−based short−circuit protection, an Over Voltage Protection on the VCC pin protects the whole circuitry in case of optocoupler destruction or adverse open loop operation.
NCP1253Features • Fixed−Frequency 65 kHz or 100 kHz Current−Mode Control Operation • Frequency Foldback Down to 26 kHz and Skip−Cycle in Light Load Conditions • Adjustable Ramp Compensation • Internally Fixed 4 ms soft−start • Timer−based Auto−Recovery or Latched Short−Circuit Protection • Frequency Jittering in Normal and Frequency Foldback Modes • Latched OVP on VCC • Up to 28 V VCC Operation • Extremely Low No−load Standby Power • These are Pb−Free Devices Typical Applications • Ac−dc Converters for TVs, Set−top Boxes and Printers • Offline Adapters for Notebooks and Netbooks
类型:贸易/代理/分销
电话:
0755-82549943
0755-82549943
0755-82549943
手机:13714022523
15919934827
18948774678
联系人:陈小姐/王先生/陈先生
邮箱:qixiudz@163.com
地址:广东深圳福田区新亚洲电子城4B025a室