MC33887PNB - 5A H-Bridge Motor Driver | NXP | QFN-36 (9x9)
MPN: MC33887PNB ✗ Cuối đờiMC33887PNB Tóm tắt
An H-Bridge motor driver is a power-stage topology that uses four switching MOSFETs arranged in an H configuration to drive a DC or stepper motor in both forward and reverse directions. It belongs to the broader class of motor driver ICs, which themselves fall under power management semiconductors, sitting between microcontrollers and the mechanical actuators they control. The integration of analog feedback, gate drive, and protection features into one die is what distinguishes a smart H-Bridge from a discrete MOSFET H-Bridge design.
Key features of the MC33887PNB include a precise 1/375th (0.00266) ground-referenced current-sense output at the FB pin for closed-loop torque control, programmable PWM frequencies through the input logic, built-in sleep mode for quiescent current reduction, and comprehensive protection including thermal shutdown, short-circuit protection, and undervoltage lockout. The 9x9 mm PQFN exposed-pad package achieves a low thermal resistance suitable for continuous 5 A operation.
Internally the device uses an N-channel MOSFET H-Bridge driven by an integrated charge pump that generates the gate-boost voltage above the load supply. This architecture yields low RDS(ON) per switch, which directly translates to lower conduction losses and cooler operation at full load. The current feedback is sourced from the high-side drivers, giving a true bidirectional representation of motor current in both forward and reverse rotation.
Typical applications include DC brushed motor control in automotive body electronics, seat and mirror actuators, throttle-by-wire, and small industrial pumps and valves. Its 5 A rating covers most low-voltage brushed DC loads encountered in 12 V automotive and 24 V industrial environments.
When designing with the MC33887PNB, place input bulk capacitors close to the supply pins and use a wide ground pour under the exposed pad to dissipate the 5 W it can produce under worst-case load. The FB pin output must be conditioned with an external op-amp before being fed to the microcontroller ADC.
This page synthesizes distributor pricing, drop-in alternative listings, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho MC33887PNB — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC33887PNB (cùng hình factor và footprint) — khác nhau ở Charge Pump, Package, Protection Features.
MC33887PNB-R2
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC33887EK
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TLE5205-2G
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC33887PNB Tỷ lệ tối đa & tính chất điện
| Chức năng | H-Bridge motor driver with load current feedback |
| Cấu trúc | Monolithic H-Bridge, N-channel MOSFET output |
| Supply Voltage (V+) | 5 V to 28 V |
| Continuous Load Current | 5 A |
| Current Sense Ratio | 1/375 (0.00266) |
| Current Sense Output (FB pin) | Ground-referenced analog |
| Nhiệt độ hoạt động | -40 C to +125 C |
| Control Inputs | IN1, IN2 logic inputs |
| Sleep Mode | Yes (low quiescent current) |
| Hộp | 36-PWR QFN (9x9 mm) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Charge Pump | Integrated |
| Protection Features | Thermal shutdown, short-circuit, undervoltage lockout |
| Trạng thái RoHS | Compliant (per NXP product page) |
| Trạng thái vòng đời | No Longer Manufactured (NXP product page) |
Hướng dẫn cấu hình chân MC33887PNB 36-pwr qfn (9x9 mm) with exposed pad
Cấu hình chân cho MC33887PNB (36-pwr qfn (9x9 mm) with exposed pad gói). Động cơ điện này có chân cổng, nguồn và đầu ra. Đối với các gói không phân極, tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết hướng dẫn chính xác của chân 1 và chi tiết về vân footprint. Các ứng dụng phổ biến bao gồm thiết kế nguồn cung cấp điện, điều khiển động cơ và chuyển đổi tải.
Không có dữ liệu chân cụ thể sẵn có cho MC33887PNB.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MC33887PNB phù hợp cho 6 Áp dụngs: Automotive Body Electronics Actuators, DC Brushed Motor Speed Control, Industrial Solenoid and Valve Drivers, Robotics and Small Motor Drives, Throttle-by-Wire and EGR Valves, Battery-Powered Portable Equipment.
Automotive Body Electronics Actuators
The MC33887PNB is well suited to drive brushed DC motors in 12 V automotive body modules such as power seat adjusters, power mirror tilt/extend, power liftgate latches, and power sliding doors. Its 5 A continuous output covers most seat-track and mirror actuators, and the 5 V to 28 V supply tolerance easily handles 12 V automotive load-dump and cold-crank transients. The 1/375 ground-referenced FB output lets the body control module run closed-loop torque control to detect stall conditions and prevent motor damage when the actuator reaches a mechanical endstop. Place input bulk capacitance close to the supply pins and use a wide copper pour under the exposed pad to keep junction temperature within the -40 C to +125 C operating envelope.
Được đề xuất
DC Brushed Motor Speed Control
The MC33887PNB drives DC brushed motors in speed-controlled applications such as small fans, pumps, and conveyor rollers. The integrated charge pump and low RDS(ON) N-channel MOSFETs keep conduction losses low at full 5 A load, while the 1/375 current-sense output enables precise closed-loop current limiting to protect the motor windings from stall damage. Using IN1 and IN2 logic inputs, the host microcontroller generates a PWM signal at audio frequencies above 20 kHz to make the drive silent for human occupants. The exposed thermal pad must be soldered to at least 1 square inch of inner-layer copper to sustain continuous 5 A operation without triggering thermal shutdown.
Được đề xuất
Industrial Solenoid and Valve Drivers
The MC33887PNB drives 24 V industrial solenoids and proportional valves in factory automation. Its 28 V supply ceiling handles nominal 24 V industrial rails plus tolerance, and the H-Bridge allows bidirectional drive for proportional flow control valves used in hydraulic and pneumatic systems. The integrated current feedback gives the PLC analog telemetry of actual solenoid current, which can be used to detect stuck valves and to implement soft-start ramps that reduce water-hammer effects. Thermal shutdown protects against continuous over-current conditions, and the sleep mode reduces quiescent current during machine standby to meet industrial energy-saving directives.
Được đề xuất
Robotics and Small Motor Drives
The MC33887PNB drives brushed DC gear motors used in hobby robotics, small CNC axes, and educational robot platforms. Its 5 A capability covers wheel motors on small autonomous vehicles and pan/tilt motors on vision systems. The 1/375 current feedback allows the robot controller to detect wheel stall when the robot collides with an obstacle, triggering safety stop without external current-sense resistors that would add cost. The 36-PWR QFN (9x9 mm) footprint fits compact embedded boards, and the integrated charge pump eliminates the external bootstrap capacitors that discrete H-Bridge designs require, simplifying PCB layout.
Được đề xuất
Throttle-by-Wire and EGR Valves
The MC33887PNB drives the brushed DC motor in electronic throttle bodies and exhaust gas recirculation (EGR) valves where precise bidirectional torque control is required. The 1/375 ground-referenced FB output allows the engine control unit to command and verify motor torque in real time, supporting OBD-II diagnostics and limp-home modes when the throttle sticks. The 5 A continuous rating exceeds typical 2-3 A throttle-body motor currents, providing safety margin for cold-engine operation when viscosity increases. Operating from 5 V to 28 V allows the part to survive load-dump on the 12 V automotive bus without external protection.
Được đề xuất
Battery-Powered Portable Equipment
The MC33887PNB drives brushed motors in cordless power tools, electric bicycles, and other portable battery-powered equipment. The integrated sleep mode minimizes quiescent current draw on the battery during standby, extending runtime between charges. At 5 A continuous the part can drive small spindle motors in Dremel-style tools and water-pump motors in portable sprayers. Designers must note that the 5 V minimum supply voltage rules out single-cell Li-ion operation (3.0 V to 4.2 V), but the part runs comfortably from 3-cell to 6-cell Li-ion packs used in modern cordless tools, with the 28 V ceiling providing adequate headroom under load.
Được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC33887PNB — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC33887PNB-R2 | MC33887EK | TLE5205-2G |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Infineon |
| Package | 36-PWR QFN (9x9 mm) | 36-PWR QFN (9x9 mm) | 36-PWR QFN (9x9 mm) | Multiwatt-15 |
| Continuous Load Current | 5 A | 5 A | 5 A | 5 A |
| Lifecycle Status | Obsolete (No Longer Manufactured) | Obsolete (No Longer Manufactured) | Obsolete (No Longer Manufactured) | Active |
Bảo phân biệt quan trọng
- Reel packaging variant (vsMC33887PNB-R2)
- QFN surface-mount footprint (vsTLE5205-2G)
- 1/375 ground-referenced current sense (vsTLE5205-2G)
Ghi chú thiết kế
The MC33887PNB dissipates up to approximately 5 W at full 5 A load with 1 V drop across the H-Bridge. With thermal resistance around 1-2 C/W junction-to-case on the exposed pad, junction temperature rises 5-10 C above case temperature. Solder the exposed pad to at least 1 square inch of inner-layer copper to keep the junction within the 125 C limit at ambient temperatures above 85 C. Estimated dissipation figures derived from VIN-VOUT differential; verify against the manufacturer SOA curve for the actual operating condition.
Place input bulk capacitors (minimum 100 uF) within 5 mm of the V+ supply pins to handle the current spikes during PWM transitions. The exposed thermal pad must have a continuous copper pour on the top layer and multiple thermal vias (0.3 mm drill, 0.6 mm pad, 1.0 mm pitch) to inner-layer ground planes. Keep logic traces (IN1, IN2, EN) away from the high-current motor output traces to avoid capacitive coupling that could falsely trigger logic transitions.
Do not exceed the absolute maximum supply voltage of 28 V; load-dump pulses on 12 V automotive buses can reach 40 V and require external TVS protection. The FB pin current-sense output is NOT designed to drive low-impedance loads directly - always buffer it through an op-amp with at least 10 kohm input impedance. Float or ground unused logic inputs to prevent the H-Bridge from entering an unintended braking mode.
Thông tin tuân thủ
RoHS compliance per NXP product page. REACH, AEC-Q100, halogen-free, and conflict-minerals status not explicitly confirmed in the verified web data.
