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MC33887DWB Datasheet(PDF) 1 Page - Motorola, Inc |
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MC33887DWB Datasheet(HTML) 1 Page - Motorola, Inc |
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1 / 28 page  Simplified Application Diagram 5.0 V V+ MOTOR MCU 33887 IN OUT OUT OUT OUT OUT OUT2 OUT1 V+ CCP PGND AGND FS IN1 EN D1 IN2 D2 FB A/D 33887 33887 Simplified Application Diagram MOTOROLA SEMICONDUCTOR TECHNICAL DATA © Motorola, Inc. 2004 Document order number: MC33887 Rev 9.0, 10/2004 33887 5.0 A H-Bridge with Load Current Feedback The 33887 is a monolithic H-Bridge Power IC with a load current feedback feature making it ideal for closed-loop DC motor control. The IC incorporates internal control logic, charge pump, gate drive, and low RDS(ON) MOSFET output circuitry. The 33887 is able to control inductive loads with continuous DC load currents up to 5.0 A, and with peak current active limiting between 5.2 A and 7.8 A. Output loads can be pulse width modulated (PWM-ed) at frequencies up to 10 kHz. The load current feedback feature provides a proportional (1/375th of the load current) constant-current output suitable for monitoring by a microcontroller’s A/D input. This feature facilitates the design of closed-loop torque/speed control as well as open load detection. A Fault Status output terminal reports undervoltage, short circuit, and overtemperature conditions. Two independent inputs provide polarity control of two half-bridge totem-pole outputs. Two disable inputs force the H-Bridge outputs to tri-state (exhibit high impedance). The 33887 is parametrically specified over a temperature range of -40 °C ≤ TA ≤ 125°C and a voltage range of 5.0 V ≤ V+ ≤ 28 V. The IC can also be operated up to 40 V with derating of the specifications. Features • 5.0 V to 40 V Continuous Operation • 120 m Ω RDS(ON) H-Bridge MOSFETs • TTL/CMOS Compatible Inputs • PWM Frequencies up to 10 kHz • Active Current Limiting (Regulation) via Internal Constant OFF-Time PWM (with Temperature-Dependent Threshold Reduction) • Output Short Circuit Protection (Short to V+ or Short to GND) • Undervoltage Shutdown • Fault Status Reporting • Sleep Mode with Current Draw ≤50 µA (Inputs Floating or Set to Match Default Logic States) • Pb-Free Packaging Designated by Suffix Codes VW and PNB 5.0 A H-BRIDGE WITH LOAD CURRENT FEEDBACK ORDERING INFORMATION Device Temperature Range (TA) Package MC33887DH/R2 -40°C to 125°C -40°C to 125°C -40°C to 125°C 20 HSOP PC33887VW/R2 MC33887PNB/R2 36 PQFN MC33887DWB/R2 54 SOICW-EP DWB SUFFIX CASE 1390-01 54-TERMINAL SOICW-EP DH SUFFIX VW (Pb-FREE) SUFFIX CASE 979-04 20-TERMINAL HSOP PNB (Pb-FREE) SUFFIX CASE 1503-01 36-TERMINAL PQFN 33887 Simplified Application Diagram Bottom View Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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