UH277G-G04-K

UNISONIC TECHNOLOGIES CO., LTD UH277 LINEAR INTEGRATED CIRCUIT COMPLEMENTARY OUTPUTS HALL EFFECT LATCH IC  DESCRIPTION The UTC UH277 is a Latch-Type Hall Effect sensor with built-in complementary output drivers. It’s designed with internal temperature compensation circuit and built-in protection diode prevent reverse power fault. The application is aimed for brush-less DC Fan The UH277 Outputs operate as the Hysteresis Characteristics. The Outputs alternately ON and OFF when either the magnetic flux density larger than threshold BOP or the magnetic flux density lower than BRP.  FEATURES * Widen Power Supply range from 3V ~ 20V. * On-chip Hall sensor with excellent hysteresis. * Open Collector outputs had the sinking capability up to 300mA. * Output Clamping Diodes reduce the peak output voltages during switching. * Build-in reverse protection diode.  ORDERING INFORMATION Ordering Number UH277G-G04-K  Package SIP-4 Packing Bulk MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 5 QW-R118-003.G UH277  LINEAR INTEGRATED CIRCUIT PIN DESCRIPTION PIN NO. PIN NAME 1 VCC 2 DO 3 DOB 4 VSS  P/I/O P O O P DESCRIPTION Positive Power Supply Output Pin Output Pin Ground BLOCK DIAGRAM 1 DO VCC 2 REG. Hall Sensor DOB 3 VSS 4  SENSOR LOCATIONS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R118-003.G UH277  LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified) PARAMETER Supply Voltage Reverse VCC Polarity Voltage Output OFF Voltage Magnetic flux density Continuous Output ON Current Hold Peak (Start Up) Power Dissipation Junction Temperature Operating Temperature Storage Temperature Note 1: Output Zener protection voltage  RATINGS 20 -25 32 Unlimited 0.3 0.4 0.7 500 +150 -20 ~ +85 -65 ~ +150 IC PD TJ TOPR TSTG UNIT V V V A mW °C °C °C ELECTRICAL CHARACTERISTICS (TA =25°C, unless otherwise specified) PARAMETER Low Supply Voltage Supply Voltage Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time Switch Time Differential  SYMBOL VCC VRCC VCE B SYMBOL VCE VCC VCE(SAT) ICEX ICC tR tF ∆t TEST CONDITIONS VCC=3.5V, IL=100mA MIN TYP 3 VCC=14V, IL=300mA VCE=14V, VCC=14V VCC=20V, Output Open VCC=14V, RL=820Ω, CL=20pF VCC=14V, RL=820Ω, CL=20pF VCC=14V, RL=820Ω, CL=20pF 0.3