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33887 Dataheets PDF



Part Number 33887
Manufacturers Motorola Inc
Logo Motorola  Inc
Description 5.0 A H-Bridge with Load Current Feedback
Datasheet 33887 Datasheet33887 Datasheet (PDF)

Freescale Semiconductor, Inc. MOTOROLA SEMICONDUCTOR TECHNICAL DATA Document order number: MC33887 Rev 9.0, 10/2004 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 .

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Freescale Semiconductor, Inc. MOTOROLA SEMICONDUCTOR TECHNICAL DATA Document order number: MC33887 Rev 9.0, 10/2004 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 mΩ 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 33887 5.0 A H-BRIDGE WITH LOAD CURRENT FEEDBACK Freescale Semiconductor, Inc... DH SUFFIX VW (Pb-FREE) SUFFIX CASE 979-04 20-TERMINAL HSOP PNB (Pb-FREE) SUFFIX CASE 1503-01 36-TERMINAL PQFN Bottom View DWB SUFFIX CASE 1390-01 54-TERMINAL SOICW-EP ORDERING INFORMATION Device MC33887DH/R2 PC33887VW/R2 MC33887PNB/R2 MC33887DWB/R2 -40°C to 125°C -40°C to 125°C -40°C to 125°C Temperature Range (TA) Package 20 HSOP 36 PQFN 54 SOICW-EP 33887Simplified Simplified Application Diagram SimplifiedApplication Application Diagram 33887 Diagram 5.0 V CCP 33887 33887 V+ OUT1 V+ IN OUT OUT OUT OUT OUT A/D FS EN IN1 IN2 D1 D2 FB MOTOR OUT2 PGND AGND MCU © Motorola, Inc. 2004 For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. C Ccp CP Charge Pump Charge Pump VPWR V+ EN 5.0 V 5.0 V Regulator Regulator 80 80 uA µA (each) (each) Freescale Semiconductor, Inc... Low-Side Current Limit, Current Limit, Ov ercurrent Short Circuit Sens e, & Sense, and Feedback Current Feedback Circuit Circuit IN1 IN2 D1 D2 25 µuA A 25 OUT1 Gate Drive .


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