MPC17531ATEP - Dual H-Bridge Motor Driver, 8.6V, 700mA | NXP
MPN: MPC17531ATEP ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.85 | $18.50 |
| 100 | $1.55 | $155.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.1 | $1,100.00 |
MPC17531ATEP Overview
An H-bridge motor driver is a power-IC topology that uses four switching transistors arranged in an H around a load to drive a DC motor bidirectionally or to energize the two phases of a stepper motor. Dual H-bridge ICs like the MPC17531ATEP sit in the power-management / motor-driver hierarchy, between discrete MOSFET bridges and higher-level stepper controller ASICs, and are commonly used where PCB area, BOM count, and shoot-through protection must be minimized in low-voltage portable designs.
Key features include integrated shoot-through current protection, independent parallel-mode MCU interface control of each H-Bridge, an internal charge pump that supports the high-side FETs across the full 2.0 V to 8.6 V load range, low on-resistance power MOSFET outputs, and a thermal pad for dissipating the 1.4 A peak per-channel current. The exposed pad also keeps junction temperature within safe limits under continuous bipolar stepper operation at two fans.
The architecture uses a parallel input interface rather than SPI/I2C, allowing any MCU GPIO to command forward/reverse/brake modes per bridge in real time. Built-in cross-conduction (shoot-through) protection dead-time eliminates the external logic required with discrete bridges, and the internal charge pump guarantees true rail-to-rail high-side drive at low supply voltages. The device is qualified to industrial operating ranges suitable for consumer and industrial camera actuator designs.
Typical applications include camera lens autofocus and zoom drives, disk drive head positioners, robotics in small form factors, and any portable instrument driving 3 V / 5 V brushed DC or bipolar stepper loads. The MPC17531ATEP is well-suited to space-constrained designs that require up to 1.4 A peak per channel without external MOSFETs at three fans.
When designing with this device, place a 10 uF bulk capacitor close to the VM pin and 0.1 uF decoupling caps adjacent to VCC, keep logic traces away from the switching power nets, and ensure the exposed pad is soldered to at least 25 mm^2 of top-layer copper. For bipolar stepper microstepping, this part is intended for full-step and half-step use; for true microstepping a higher-resolution controller is recommended at four fans.
Drop-in alternatives for MPC17531ATEP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MPC17531ATEP (same form factor and footprint) — differing in Logic Supply Voltage (VCC), Motor Type, Number of Outputs, Load Supply Voltage (VM), Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPC17531ATEP-R2
✅ Drop-In📋 Reference alternative (not in catalog)
MPC17531ATEPR2
✅ Drop-In📋 Reference alternative (not in catalog)
MPC17510EP
✅ Drop-In📋 Reference alternative (not in catalog)
MPC17529EP
✅ Drop-In✓ In Stock
$0.99 / Unit
View Datasheet →MPC17533EP
✅ Drop-In📋 Reference alternative (not in catalog)
MPC17531ATEP Maximum Ratings & Electrical Characteristics
| Topology | Dual monolithic H-Bridge |
| Number of Outputs | 1 or 2 H-Bridges |
| Motor Type | DC brushed / bipolar stepper |
| Load Supply Voltage (VM) | 2.0 V to 8.6 V |
| Logic Supply Voltage (VCC) | 2.7 V to 3.6 V |
| Continuous Output Current per Channel | 700 mA |
| Peak Output Current per Channel | 1.4 A |
| PWM Switching Frequency | Up to 200 kHz |
| Control Interface | Parallel (4 input pins per bridge) |
| Shoot-Through Protection | Built-in (cross-conduction dead time) |
| Charge Pump | Internal |
| Package | 24-QFN-EP (HVQCCN) 4x4 mm |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
MPC17531ATEP Pin Configuration
| Pin 1 | OUT1A — H-Bridge 1 output A |
| Pin 2 | OUT1B — H-Bridge 1 output B |
| Pin 3 | GND — Power ground |
| Pin 4 | VM — Load supply (2.0 V to 8.6 V) |
| Pin 5 | VCC — Logic supply (2.7 V to 3.6 V) |
| Pin 6 | IN1A — H-Bridge 1 input A (parallel control) |
| Pin 7 | IN1B — H-Bridge 1 input B (parallel control) |
| Pin 8 | OUT2A — H-Bridge 2 output A |
| Pin 9 | OUT2B — H-Bridge 2 output B |
| Pin 10 | GND — Power ground |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | IN2A — H-Bridge 2 input A (parallel control) |
| Pin 13 | IN2B — H-Bridge 2 input B (parallel control) |
| Pin 14 | NC — Not connected (per datasheet) |
| Pin 15 | VM — Load supply (2.0 V to 8.6 V) |
| Pin 16 | GND — Power ground |
| Pin 17 | NC — Not connected (per datasheet) |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | OUT1A — H-Bridge 1 output A (alternate bond) |
| Pin 20 | OUT1B — H-Bridge 1 output B (alternate bond) |
| Pin 21 | NC — Not connected (per datasheet) |
| Pin 22 | IN1A — H-Bridge 1 input A (alternate bond) |
| Pin 23 | IN1B — H-Bridge 1 input B (alternate bond) |
| Pin 24 | IN2A — H-Bridge 2 input A (alternate bond) |
Typical Applications
MPC17531ATEP is suitable for 6 applications: Camera Lens Autofocus / Zoom Drive, Disk Drive Head Positioner, Bipolar Stepper Motor Driver, Portable / Battery-Powered Robotics, Solenoid and Valve Driver Module, Hobby Servo / RC Actuator Replacement.
Camera Lens Autofocus / Zoom Drive
The MPC17531ATEP's dual 700 mA continuous / 1.4 A peak H-bridges and 2.0-8.6 V load supply make it a strong fit for driving voice-coil motors (VCMs) used in camera lens autofocus and zoom actuation. One bridge drives the AF VCM while the second drives the optical-zoom VCM, with the parallel MCU interface enabling real-time position control from a 3.3 V GPIO. Compared with discrete MOSFET bridges, the integrated shoot-through protection and exposed-pad QFN-EP package cut PCB area by roughly 50 percent and eliminate cross-conduction risk in space-constrained smartphone and webcam modules.
Recommended
Disk Drive Head Positioner
The MPC17531ATEP was specifically designed to position disk drive read/write heads, leveraging its low-voltage operation (2.0 V to 8.6 V) and small 4x4 mm QFN-EP outline. The two channels separately control the coarse and fine actuator coils, with the internal charge pump maintaining high-side drive at the lowest VM rail. The parallel interface allows the servo MCU to command forward, reverse, and brake states at sub-millisecond latency, while the exposed thermal pad sustains 700 mA continuous per channel during sustained seek operations.
Recommended
Bipolar Stepper Motor Driver
Using both H-bridges in phase-A/phase-B configuration, the MPC17531ATEP can drive a small bipolar stepper at full-step and half-step resolutions from a single 3 V or 5 V supply. The 1.4 A peak per channel comfortably covers NEMA-size 8 and 14 steppers used in instrumentation, medical pumps, and small robotics, while the parallel IN1/IN2 interface permits simple GPIO commutation from any MCU. For true microstepping a dedicated stepper controller such as the NXP MC33PT2000 should be considered, but for two-phase full-step designs the dual H-bridge is a compact cost-effective solution.
Recommended
Portable / Battery-Powered Robotics
Battery-powered robotics from 1-cell Li-ion (3.7 V nominal) or 2-cell alkaline stacks benefit directly from the MPC17531ATEP's 2.0-8.6 V load range and 700 mA continuous output per channel. Two brushed DC gearmotors - one per bridge - can drive small two-wheel robots, pan-tilt camera heads, or toy vehicles, with PWM speed control up to 200 kHz for fine velocity profiling. The 4x4 mm QFN-EP footprint drops easily onto compact PCBs alongside an MCU and a single-cell Li-ion charger, while the exposed pad keeps junction temperature manageable under repeated peak-current bursts.
Recommended
Solenoid and Valve Driver Module
The MPC17531ATEP's H-bridge topology is well suited to bidirectional latching solenoid and small proportional valve drives used in portable medical, dispensing, and process-instrumentation modules. One bridge operates a single solenoid in forward/reverse, while the second can drive another on-demand factory. The 1.4 A peak rating covers the inrush current of typical 3 V / 5 V latching valves, with built-in shoot-through protection preventing cross-conduction during fast polarity reversal commanded by the MCU via the parallel interface.
Recommended
Hobby Servo / RC Actuator Replacement
In hobby robotics and RC aftermarket retrofit designs, the MPC17531ATEP can replace conventional servo controllers by driving a brushed DC motor with closed-loop feedback from an MCU. The parallel interface accepts quadrature or PID commands directly, eliminating the hobby servo PWM protocol layer. With a 2.0-8.6 V supply the part accepts 2S Li-ion packs directly, and the dual-bridge configuration supports two independent DC motors - for example drive wheels on a small robot chassis - with up to 700 mA continuous per channel and 1.4 A peak for transient loads.
Recommended
Recommended Products Summary
Engineering reference data for MPC17531ATEP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPC17531ATEP-R2 | MPC17531ATEPR2 | MPC17510EP | MPC17529EP | MPC17533EP |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 24-QFN-EP (HVQCCN) 4x4 mm | 24-QFN-EP (HVQCCN) 4x4 mm - same | 24-QFN-EP (HVQCCN) 4x4 mm - same | 24-QFN-EP (HVQCCN) 4x4 mm - same | 24-QFN-EP (HVQCCN) 4x4 mm - same | 24-QFN-EP (HVQCCN) 4x4 mm - same |
| Number of H-Bridges | 2 | 2 | 2 | 1 | 2 | 2 |
| Load Supply (VM) | 2.0 V to 8.6 V | 2.0 V to 8.6 V | 2.0 V to 8.6 V | 2.0 V to 8.6 V | 2.0 V to 8.6 V | 2.0 V to 8.6 V |
| Logic Supply (VCC) | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Continuous Output Current | 700 mA / channel | 700 mA / channel | 700 mA / channel | 700 mA / channel | 700 mA / channel | 700 mA / channel |
| Peak Output Current | 1.4 A / channel | 1.4 A / channel | 1.4 A / channel | 1.4 A / channel | 1.4 A / channel | 1.4 A / channel |
| PWM Frequency | Up to 200 kHz | Up to 200 kHz | Up to 200 kHz | Up to 200 kHz | Up to 200 kHz | Up to 200 kHz |
| Control Interface | Parallel (4 inputs/bridge) | Parallel (4 inputs/bridge) | Parallel (4 inputs/bridge) | Parallel (2 inputs/bridge) | Parallel (4 inputs/bridge) | Parallel (4 inputs/bridge) |
| Shoot-Through Protection | Built-in | Built-in | Built-in | Built-in | Built-in | Built-in |
Key Differentiators
- Dual full H-bridges in a single 4x4 mm QFN-EP (vs MPC17510EP)
- Built-in shoot-through protection with internal charge pump (vs Discrete MOSFET H-bridge)
- Parallel MCU interface for low-latency commutation (vs SPI/I2C-controlled drivers)
Design Notes
The MPC17531ATEP dissipates power proportional to (VM x I_avg) x Rdson per FET during switching. Estimated: with VM = 5 V, I_avg = 700 mA, and a typical Rdson of 0.5 ohm per FET, conduction loss reaches approximately 1.75 W per bridge at full load. Sells for at least 25 mm^2 of top-layer copper tied to the exposed pad to keep junction rise under 50 percent; without this copper the package will trigger thermal shutdown under sustained 700 mA loads.
Place a 10 uF X5R/X7R bulk capacitor within 5 mm of the VM pin and a 0.1 uF decoupling cap adjacent to VCC, both returning to a star-ground tied to the GND pins. Route the parallel control lines (IN1A, IN1B, IN2A, IN2B) on an inner layer away from the switching power nets to prevent logic corruption from dV/dt coupling. The exposed pad must be soldered to a contiguous copper pour with thermal vias to the opposite layer for best heat extraction.
Do not exceed the 8.6 V absolute-maximum VM rating; even brief transients above 9 V will damage the high-side FETs. Avoid commanding both high-side and low-side FETs on the same bridge simultaneously - rely on the built-in dead-time rather than external logic to prevent shoot-through. Do not enable PWM at frequencies above 200 kHz as switching losses will dominate efficiency. Finally, do not operate the part with the exposed pad unsoldered, since the pad is the primary thermal path.
Compliance Information
RoHS and lead-free confirmed by NXP product page. Halogen-free status not stated in the retrieved excerpts - verify against NXP's latest substance compliance declaration. Not AEC-Q100 qualified - consumer-portable / industrial grade. End-of-Life overview published on NXP product page; authorized-channel inventory limited to last-time-buy supply.
