UNISONIC TECHNOLOGIES CO., H654 LINEAR INTEGRATED CIRCUIT COMPLEMENTARY OUTPUT HALL EFFECT LATCH DESCRIPTION The UTC H654 is integrated Hall sensors with complementary output drivers designed for electronic commutation of brushless DC Fan. It composed of an on-chip Hall voltage generator, a differential amplifier, Schmitt trigger, an open-collector output on a single chip. Furthermore, an internal bandgap regulator allows temperature compensated operations and a wide operating supply range. An on-chip protection diode is implemented to prevent reverse power fault. When the magnetic flux density larger than threshold BOP, DO will be turned on(low) and DOB be turned off(high). The output state is held until the magnetic flux density is lower than BRP, and then DO is reversal to turned off and DOB turned on. 1 TO-94 *Pb-free plating product number: H654L FEATURES * Operate from 3.5V ~ 20V supply voltage. * On-chip Hall sensor with two different sensitivity and hysteresis settings. * High output sinking capability up to 300mA for driving large load. * Lower current change rate reduces the peak output voltages during switching. * Build-in protecting diode for chip reversal power connecting. PIN DESCRIPTION PIN PIN P/I/O DESCRIPTION NO. NAME 1 Vcc P Positive Power Supply 2 DO O Output Pin 3 DOB O Output Pin 4 Vss P Ground ORDERING INFORMATION Order Number Normal Lead free plating H654-T94-K H654L-T94-K www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Package Packing TO-94 Bulk 1 QW-R118-003,A H654 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM 1 DO VCC 2 REG. Hall Sensor DOB 3 VSS 4 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 QW-R118-003,A H654 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25℃) PARAMETER Supply Voltage Reverse VCC Polarity Voltage Output OFF Voltage Magnetic flux density SYMBOL VCC VRCC VCE B Continuous Hold Peak (Start Up) Output ON Current Power Dissipation Operating Temperature Junction Temperature Storage Temperature Note 1: Output Zener protection voltage RATINGS 20 -35 50 Unlimited 0.3 0.4 0.7 500 0 ~ +70 +125 -40 ~ +150 IC PD TOPR TJ TSTG UNIT V V V A mW ℃ ℃ ℃ ELECTRICAL CHARACTERISTICS (Ta =25℃, 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 VCE VCC VCE(sat) ICEX ICC tR tF ∆t TEST CONDITIONS VCC=3.5V, IL=100mA MIN TYP 0.4 3.5 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 <0.1 16 3.0 0.3 3.0 MAX 20 0.6 10 25 10 1.5 10 UNIT V V V µA mA µS µS µS TYPICAL APPLICATION CIRCUIT coil1 UTC H654 1 2 3 coil2 4 + - Vcc Brushless DC Fan UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 QW-R118-003,A H654 LINEAR INTEGRATED CIRCUIT TEST CIRCUIT 14V UTC H654 DO RL1 820Ω DOB RL2 820Ω CL1 20pF CL2 20pF MAGNETIC CHARACTERISTICS PARAMETR Ta= 25℃ MIN MAX 100 -100 50 200 SYMBOL Operate Point Release Point Hysteresis BOP BRP BHYS Ta= 0 ~ +70℃ MIN MAX 100 -100 30 200 UNIT G G G -200 RP OFF ON OP -100 0 100 Output Voltage in Volts Output Voltage i n Volts HYSTERESIS CHARACTERISTICS 200 Magnetic Flux Density in Gauss UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw -200 OFF OP RP ON -100 0 100 200 Magnetic Flux Density in Gauss 4 QW-R118-003,A H654 LINEAR INTEGRATED CIRCUIT PERFORMANCE CHARACTERISTICS Ta(℃) PD (mW) 25 550 50 525 60 515 70 505 80 485 85 475 90 465 95 455 100 445 105 425 110 405 115 385 120 365 Power Dissipation Curve 600 PD (mW) 500 400 300 200 100 0 25 50 75 100 125 150 Ta (℃) Typical Magnetic Switch Point VS.Supply Voltage 120 Flux Density (G) BHYS 80 BOP 40 0 BRP -40 12 5 20 24 Supply Voltage (V) Supply Current (mA) Typical Supply Current versus Supply Voltage 16 14 12 Ta=25℃ 10 Ta=80℃ Ta=20℃ 8 6 4 2 0 0 5 10 15 20 25 Supply Voltage (V) 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 QW-R118-003,A