H654_10

UNISONIC TECHNOLOGIES CO., LTD H654 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. LINEAR INTEGRATED CIRCUIT 1 SIP-4 *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.(Note1) ORDERING INFORMATION Order Number Normal Lead Free Plating H654-G04-K H654L-G04-K Package SIP-4 Packing Bulk H654L-G04-K (1)Packing Type (2)Package Type (3)Lead Plating (1) B: Bulk (2) G04: SIP-4 (3) L: Lead Free Plating, Blank: Pb/Sn 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 www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd 1 of 5 QW-R118-003,B H654 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT 1 VCC DO 2 REG. Hall Sensor DOB 3 VSS 4 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R118-003,B H654 ABSOLUTE MAXIMUM RATINGS (Ta=25℃) PARAMETER Supply Voltage Reverse VCC Polarity Voltage Output OFF Voltage Magnetic flux density Output ON Current Power Dissipation Junction Temperature Operating Temperature Storage Temperature Note 1: Output Zener protection voltage Continuous Hold Peak (Start Up) LINEAR INTEGRATED CIRCUIT SYMBOL VCC VRCC VCE B IC PD TJ TOPR TSTG RATINGS 20 -35 50 Unlimited 0.3 0.4 0.7 500 +150 -20 ~ +85 -65 ~ +150 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 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 MIN 3.5 0.3