The OCH177 Omnipolar Hall-effect Sensor IC is fabricated from mixed signal CMOS technology. It is comprised of two Hall
plates and a CMOS output driver, mainly designed for battery-operation, hand-held equipment (such as Cellular and Cordless
Phone, PDA). The total power consumption in normal operation is typically 24μW with a 3V power source. Either north or
south poles of sufficient strength will turn the output on. The output will be turned off under no magnetic field. While the
magnetic flux density (B) is larger than operating point (BOP), the output will be turned on (low), the output is held until B
is lower than release point (BRP), and then turned off.
The OCH177 is available in many flexible packaging options, such as DFN1216-4L. Operating temperature range of the
OCH177 is from -40°C to 85°C.
To minimize the BOM cost, capacitors of the MLCC type are supported, and only one external component are needed to
complete the application circuit.
Features
z Micro power consumption ideal for battery-powered applications
z Omnipolar (operation with magnetic field of either north or south pole), easy to use as output switches with both North
and South pole
z Input Voltage Range: 2.4V to 5.5V
z Very High Sensitivity Hall Sensor
z Chopper stabilized amplifier stage
z Good RF noise immunity
z DFN1216-4L package z ESD (HBM) ＞ 4KV
z Not need the push-high resistance
Applications
z Cover switch in clam-shell cellular phones
z Cover switch in Notebook PC/PDA
z Contact-less switch in consumer products
z Solid State Switch
zHandheld Wireless Handset Awake Switch
z Lid close sensor for battery-powered devise
z Magnet proximity sensor for reed switch replacement in low duty cycle applications
雅特生科技 (Artesyn)宣布推出叁系列全新的50V直流/直流电源转换器模组(AVE450/AVE500/ADH700)，其优点是可支援採用氮化镓(GaN)和高压LDMOS技术的高功率无线基地台设备和远端射频转发器(RRH)系统。由于GaN和高压LDMOS技术可以提高系统的功率密度和电源效率，因此採用这两种技术的基地台和RRH转发器也越来越多，而且数目急剧上升。
该叁系列的砖电源模组全部採用高功率密度的开放式设计，其尺寸大小可与电讯业半砖电源模组的标準规格相容。此外，这叁系列新产品都另有铝质散热基板可供选用，以确保系统可以充分发挥其散热效能。
AVE450系列电源模组的效率高达95%以上(典型值)，输出电流则高达10A。ADH700和AVE500系列电源模组的效率高达94.8%以上(典型值)，输出电流则高达14A。新产品全部可在摄氏-40度至85度之间的温度环境下正常作业，甚至基板温度高达摄氏100度，也可在无空气对流的情况下继续以全功率作业。
该公司叁款50V直流/直流电源转换器模组，都有极宽的输出边限微调(25V至57V输出之间)。此外，各款产品都配备远端控制功能，而且涟波和杂讯都极低，防护功能则有输入欠压锁定、输出过流保护、输出过压保护和过热保护。
公司:深圳市哲瀚电子科技有限公司
联系人:陈小姐
手机:13714441972
电话:0755-82549527/83259945/13714441972
传真:0755-83259945
地址:深圳市福田区深圳市福田区华强北街道深南中路3006号佳和大厦3C006
