UNISONIC TECHNOLOGIES CO., LTD UH266 LINEAR INTEGRATED CIRCUIT HIGH VOLTAGE HALL EFFECT LATCH DESCRIPTION The UTC UH266 is a one-chip composed of Hall sensor and output coil drivers, applied to two-phase brush-less DC motor. The device includes an on-chip Hall plate for magnetic sensing, a amplifier for Hall voltage, and a Schmitt trigger to provide switching hysteresis, and complementary darlington open-collector drivers for sinking large current loads. An internal bandgap regulator is used to provide temperature compensated supply voltage and allows a wide operating range. If B>Bop, DO turn on (low) and DOB turn off (high). The outputs state is latched prior to reach release point (Brp). if B<Brp, DO turn off and DOB turn on. UTC UH266 is rated for operation over temperature range from -20°C to 85°C and voltage range from 4V to 28V. 1 SIP-4 FEATURES * Operating voltage: 4V~28V * Output current: 400mA(Continuous, 25°C) * Output protection Zener breakdown Vz=62V(Typ) * Reverse power protection ORDERING INFORMATION Ordering Number UH266G-G04-K Package SIP-4 Packing Bulk MARKING www.unisonic.com.tw Copyright © 2016 Unisonic Technologies Co., Ltd 1 of 5 QW-R118-016.D UH266 LINEAR INTEGRATED CIRCUIT PIN DESCRIPTION PIN NO. 1 2 3 4 PIN NAME VCC DO DOB GND DESCRIPTION Positive Power Supply Output Pin Output Pin Ground BLOCK DIAGRAM VCC DO Over-Temperature Protection Regulator Hall Plate Amplifier Schmitt Trigger Temperature Compensation Output Driver DOB GND SENSOR LOCATIONS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R118-016.D UH266 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING (TA=25°C) PARAMETER Supply Voltage Output “OFF” Voltage SYMBOL RATINGS UNIT VCC 28 V VOUT(OFF) 28 V IO(con) 400 (Note 2) mA Output “ON” Current IO(hold) 500 mA IO(peak) 700 mA Magnetic Flux Density B Unlimited Gauss Power Dissipation (Note 3) PD 550 mW Operating Temperature Range TOPR -20~+85 °C Storage Temperature TSTG -65~+150 °C Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. IO(con) is 150mA at 85°C 3. See Performance Characteristic for other conditions THERMAL DATA PARAMETER Junction to Ambient RATINGS 227 UNIT °C/W ELECTRICAL CHARACTERISTICS (TA=25°C) PARAMETER Supply Voltage Output Zener Breakdown Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time Switch Time Differential SYMBOL θJA SYMBOL VCC VZ VCE(sat) ICEX ICC tR tF ∆t TEST CONDITIONS Output Turn Off VCC=24V, IC=400mA VCC=24V, VCE=24V VCC=24V, Output Open VCC=24V, RL=820Ω, CL=20pF MIN TYP MAX UNIT 4 28 V 50 V 1.1 1.5 V < 0.1 10 µA 5 10 mA 1.0 5 µs 1.0 1.5 µs 3.0 10 µs MAGNETIC CHARACTERISTICS (TA=25°C) A grade PARAMETER Operate Point Release Point Hysteresis SYMBOL Bop Brp Bhy MIN 10 -70 SYMBOL Bop Brp Bhy MIN TYP 80 B grade PARAMETER Operate Point Release Point Hysteresis UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP -100 80 (1mT=10Gauss) MAX UNIT 70 Gauss -10 Gauss Gauss (1mT=10Gauss) MAX UNIT 100 Gauss Gauss Gauss 3 of 5 QW-R118-016.D UH266 CHYSTERESIS CHARACTERISTICS OPERATION CHARACTERISTICS (Output Voltage) Output Voltage in Volts Output Voltage in Volts LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R118-016.D UH266 LINEAR INTEGRATED CIRCUIT TEST CIRCUIT 24V UTC UH266 VOUT1 (DO) RL1 820Ω VOUT2 (DOB) R L2 820Ω C L1 20pF CL2 20pF TYPICAL APPLICATION CIRCUIT UTC UH266 coil1 1 2 3 coil2 4 + VCC - Brush-less DC Fan UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R118-016.D