CH411 Datasheet | Cosemitech

FEATURES and FUNCTIONAL DIAGRAM - Bipolar technology - Reverse battery protection - 3.5V to 30V Operation voltage - -40 o C to 150 o C Superior temperature operation - Open-collector 20 m A output - Small Size SOT-23, SOT-89 or TO-92S - Solid-state reliability - Resistant to physical stress - Activate with small, mercially available permanent magnets PACKAGE SOT-23 TO-92 SOT-89 APPLICATIONS - Brushless DC motor mutation - Automotive, Consumer and Industrial - Solid-state switch - Speed measurement - Revolution counting - Angular position detection - Magnetic Encoder DESCRIPTION The CH411 family is a Hall-effect latch designed in bipolar technology. The Hall IC internally includes an on-chip Hall voltage generator, a voltage regulator for operation with supply voltages of 3.5 to 30V, reverse protection diode, temperature pensation circuitry, small-signal amplifier, Schmitt trigger and an output driver; all in a single package. It is designed to respond to alternating North and South poles. While the magnetic flux density(B) is larger than operate point (Bop), the output will be turned on (Low), the output is held until the magnetic flux density(B) is lower than release point (Brp), then be turned off (High). Thanks to its wide operating voltage range 3.5 to 30V and extended temperature range from -40℃ to +150℃, it is quite suitable for use in automotive, industrial and consumer applications. The device is delivered in variety of packages to customers: SOT-23, SOT-89 for surface mount and TO-92S flat for through-hole mount. Both 3-lead packages are Ro HS pliant. Page 1/10 Cosemitech (Shanghai) Co., Ltd. Industry Product Group This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice and Cosemi-tech assumes no obligation for future manufacture of this product. Contact Cosemi-tech for the latest status Preliminary Specification 0.2 Table of Contents 1. Glossary of Terms...