UNISONIC TECHNOLOGIES CO., LTD UH357 Preliminary CMOS IC SMART MOTOR DRIVER WITH INTEGRATED HALL SENSOR DESCRIPTION The UH357 is a single coil motor driver with integrated Hall sensor. Lock-shutdown and auto-restart function protects the motor from being over-heated and restarts the motor after being locked. Thermal-shutdown protection (TSD) ensures the internal drivers of IC are operating under a safe operating temperature range. The UH357 also uses Soft-switch phase-switching technique to reduce the vibration and acoustic noise. FEATURES * Soft switching output driver * Built-in Hall sensor motor driver * Motor lock protection and automatic restart * Thermal shutdown protection * H-Bridge MOS driver * For 5V or 12V DC motor / FAN systems ORDERING INFORMATION Ordering Number UH357G-G04-K Package SIP-4 Packing Bulk UH357G-G04-K (1)Packing Type (1) K: Bulk (2)Package Type (2) G04: SIP-4 (3)Green Package (3) G: Halogen Free and Lead Free MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 6 QW-R118-023.a UH357 Preliminary CMOS IC PIN DESCRIPTION PIN NO. PIN NAME P/I/O DESCRIPTION 1 VDD P Power supply 2 NO O Driver output 3 SO O Driver output 4 VSS G Ground Note: I=input, O=output, I/O=input/output, P=power supply, G=ground BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R118-023.a UH357 Preliminary CMOS IC ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT DC Supply Voltage (VDD, FG) VDD 25 V Output Voltage (NO, SO) VOUT VDD + 0.3 V Supply Current IDD 5 mA Continuous Current ICONT 300 mA Hold Current IHOLD 800 mA Peak current (< 100 μs) IPEAK 1000 mA Magnetic Flux Density B Unlimited Gauss IR-Reflow Lead Temperature (10sec) 260 °C Power Dissipation PD 1000 mW Junction Temperature TJ 170 °C Operation Junction Temperature TOPR -20 ~ +85 °C Storage Temperature TSTG -55 ~ +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. Output Zener protection voltage. RECOMMENDED OPERATING COMDITIONS (TA=25°C, unless otherwise specified) PARAMETER Supply Voltage Operation Junction Temperature SYMBOL VDD TA SYMBOL θJA θJC SYMBOL IDD On resistance (RPMOS+RNMOS) RON Thermal Shutdown Threshold TSD TON TOFF Locked Rotor Period UNIT V °C MIN TYP 125 100 MAX UNIT °C/W °C/W TEST CONDITIONS VDD=24V, no load VDD=5V VDD=24V MIN TYP 2.0 4.5 3.5 MAX 150 0.4 4.1 UNIT mA Ω Ω °C s s MAGNETIC CHARACTERISTICS PARAMETR Operate Point Release Point Hysteresis MAX 24 85 ELECTRICAL CHARACTERISTICS (TA =25°C, unless otherwise specified) PARAMETER Average Supply Current TYP THERMAL RESISTANCES CHARACTERISTICS PARAMETER Junction to Ambient Junction to Case MIN 4.0 -40 SYMBOL BOP BRP BHYS MIN -5 -50 TYP 25 -25 50 MAX 50 -5 UNIT G G G DRIVER OUTPUT VS. MAGNETIC POLE PARAMETER North pole South pole TEST CONDITIONS B < BRP B > BOP UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw NO High Low SO Low High 3 of 6 QW-R118-023.a UH357 Preliminary CMOS IC FUNCTIONAL DESCRIPTIONS Refer to the block diagram above, UH357 is composed of the following blocks: 1. Bias generator The bias generator provides bias references for the analog blocks. 2. Oscillator The integrated oscillator provides the clock signal for the digital control logics. 3. Power-on Reset The block of power-on reset is used to detect the power-up ramp and reset the digital circuits. 4. Chopper Amplifier The chopper amplifier structure can achieve a higher magnetic sensitivity and dynamically removes both the offset and flicker noise at the same time. 5. Digital control logics Generates controlling signals for the Hall sensor and Coil driver and Timer part. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 6 QW-R118-023.a UH357 Preliminary HYSTERESIS CHARACTERISTICS TYPICAL APPLICATIONS CIRCUIT CMOS IC Note: Capacitor C1 is necessary to use for the decoupling between VDD and VSS and should be placed as close to the IC as possible. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R118-023.a UH357 Preliminary CMOS IC OUTPUT WAVEFORMS DESCRIPTION VDD Restart Time Shutdown Time TON TOFF NO SO Lock-shutdown protection & auto-restart 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 6 of 6 QW-R118-023.a