NXP Semiconductors MPC17C724EPR2

Overview

MPC17C724EPR2 from NXP Semiconductors (formerly Freescale) is a dual-channel H-bridge motor driver IC designed for compact portable electronics, specifically driving bipolar stepper or brushed DC motors in camera lens and shutter mechanisms. It operates from 2.7 V to 5.5 V, delivers 400 mA continuous output per channel, features 1.0 Ω typical R_DS(on), built-in shoot-through protection, and supports PWM control up to 200 kHz.

For engineers reviewing the MPC17C724EPR2 datasheet, MPC17C724EPR2 pinout, MPC17C724EPR2 application, or MPC17C724EPR2 equivalent, key selection considerations include dual independent H-bridge operation, low-voltage shutdown threshold at 2.0 V (typ), tri-state mode via PSAVE, and QFN-16 (3 × 3 mm) thermal performance with R_θJA = 47 °C/W on multilayer PCBs.

Technical Context

The MPC17C724EPR2 integrates two fully independent SMARTMOS H-bridges with separate VM1/VM2 power inputs (internally connected) and dedicated PGND1/PGND2 ground paths for high-current switching integrity. Each bridge supports four discrete states-forward, reverse, brake, and high-impedance-controlled by parallel logic-level INx pins compatible with both 3.0 V and 5.0 V MCUs.

Its internal architecture includes a level-shifter predriver stage, undervoltage detection circuit tied to VDD (trip point 2.0 V typ), and a dedicated PSAVE input that disables all outputs and deactivates low-voltage detection when asserted high. Dynamic timing parameters include 0.2 µs typical turn-on delay (t_PLH) and 0.1 µs typical turn-off delay (t_PHL) under RL = 6.8 Ω load conditions.

Key Specifications

Pinout & Package

The MPC17C724EPR2 is housed in a 16-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad (EP). The package supports high-density layout and efficient heat dissipation through the bottom-side EP connection to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual H-bridge motor driver applications.

Compared with TB6612FNG and DRV8833, the MPC17C724EPR2 offers tighter integration of UVLO, shoot-through prevention, and ultra-low standby current in a smaller QFN-16 footprint - ideal for space- and power-constrained optical modules where 400 mA/channel suffices.

Availability

MPC17C724EPR2 is available at Aetrix Electronics and suitable for camera lens focus actuators, camera shutter mechanisms, portable barcode scanner motors, miniature surveillance camera pan/tilt systems, and other compact motor control applications requiring stable component supply and long-term lifecycle assurance.

Supply support for MPC17C724EPR2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Freescale's analog and mixed-signal expertise.

The MPC17C724EPR2 belongs to NXP's SMARTMOS family of monolithic power drivers, engineered specifically for low-voltage, low-power portable imaging and precision motion control systems where size, efficiency, and reliability are critical.

FAQ

What is the maximum continuous output current per channel for the MPC17C724EPR2?

The MPC17C724EPR2 supports 400 mA continuous output current per H-bridge channel under specified thermal conditions (T_A ≤ 85 °C, R_θJA = 47 °C/W). This rating assumes proper PCB thermal design with the exposed pad soldered to a ground plane. Peak current capability is 800 mA for 10 ms pulses at 200 ms intervals, as defined in the Absolute Maximum Ratings table.

Does the MPC17C724EPR2 require external flyback diodes for inductive load protection?

No, the MPC17C724EPR2 does not require external flyback diodes because its SMARTMOS process integrates body diodes capable of handling inductive kickback during switching. However, Freescale recommends adding a zener diode or capacitor across VM for CEMF snubbing in high-dV/dt applications - this is a board-level best practice, not a device requirement.

How does the PSAVE pin function in the MPC17C724EPR2?

The PSAVE pin on the MPC17C724EPR2 is an active-high enable control: when pulled high, it disables all H-bridge outputs (forcing them into high-impedance state) and deactivates the internal undervoltage detection circuit. When low, normal operation resumes. This feature enables system-level power conservation during idle periods, reducing total system standby current to less than 1.0 µA.

What is the purpose of separate PGND1 and PGND2 pins on the MPC17C724EPR2?

PGND1 and PGND2 provide dedicated high-current return paths for H-bridge channels 1 and 2 respectively. Though internally connected, separating them on the PCB minimizes ground loop interference and improves current-handling integrity. Freescale specifies they must be tied together externally using short, wide copper traces to maintain low impedance while avoiding noise coupling into the logic ground (LGND) path.

Can the MPC17C724EPR2 drive a bipolar stepper motor directly?

Yes, the MPC17C724EPR2 can drive a bipolar stepper motor directly using its dual H-bridge configuration: connect one motor phase between OUT1A and OUT1B, and the second phase between OUT2A and OUT2B. The device supports full-step, half-step, and microstepping (via external PWM) with independent control of each winding's direction and braking state - no external logic or transistors required.