NXP Semiconductors MC33886DH

Overview

MC33886DH from NXP Semiconductors (formerly Freescale) is a monolithic 5.0 A H-bridge motor driver IC designed for bidirectional control of fractional-horsepower DC motors and solenoids. It integrates charge pump, gate drive, logic control, and low-R_DS(ON) MOSFETs in a single 20-pin HSOP package with exposed thermal pad. Key confirmed specs include 5.0–40 V supply range, 120 mΩ typical R_DS(ON) per FET at 25°C, 10 kHz PWM capability, and active current limiting with temperature-dependent foldback - used in automotive seat/mirror actuators and marine thruster control.

For engineers reviewing the MC33886DH datasheet, MC33886DH pinout, MC33886DH application, or MC33886DH equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and two validated alternative parts - all grounded in Freescale's Rev 10.0 (01/2014) device data and official packaging documentation.

Technical Context

The MC33886DH implements a fully protected totem-pole H-bridge architecture with independent IN1/IN2 logic inputs controlling OUT1/OUT2 polarity, plus complementary D1 (active-high) and D2 (active-low) disable inputs forcing tri-state outputs. Its internal charge pump enables full gate drive across the 5.0–40 V V+ range, supporting PWM up to 10 kHz without external boost circuitry.

Protection is implemented via three concurrent mechanisms: undervoltage lockout (V+ threshold 4.5 V ±150 mV), short-circuit detection (11 A high-side / 8.0 A low-side thresholds), and junction-temperature-dependent active current limiting (5.2–7.8 A nominal, folding back to 2.5 A at 175°C before thermal latch-off). Fault status (FS) is an open-drain output requiring external 5.0 V pull-up.

Key Specifications

Pinout & Package

MC33886DH is housed in a 20-pin HSOP (Heat Sink Overmolded Package) with exposed copper thermal pad (package code: 98ASH70702A, VW Pb-free suffix). The exposed pad must be soldered to PCB copper for effective heat transfer.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STSPIN840 and VNHD7008AY, the MC33886DH offers the optimal balance of integrated protection (undervoltage, thermal foldback, short-circuit latch-off), compact 20-pin HSOP packaging, and self-contained gate drive - making it ideal for cost-sensitive, thermally demanding automotive and marine applications where reliability under voltage transients is critical.

Availability

MC33886DH is available at Aetrix Electronics and suitable for automotive seat control, marine thruster systems, appliance actuator modules, and antenna positioning equipment requiring stable component supply across extended temperature ranges (-40°C to +125°C ambient).

Supply support for MC33886DH 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 acquired Freescale in 2015 and continues to support legacy analog power products. NXP specializes in secure connectivity and infrastructure solutions for automotive, industrial, and IoT markets.

The MC33886DH belongs to NXP's SMARTMOS analog power driver family, engineered for ruggedized DC motor and solenoid control in harsh environments - emphasizing thermal resilience, integrated protection, and simplified system design.

FAQ

What is the maximum continuous current rating for the MC33886DH?

The MC33886DH supports 5.0 A continuous inductive DC load current when operated within its specified ambient temperature range (-40°C to +125°C) and with adequate PCB heatsinking (R_θJB ≈ 5.0°C/W). This rating assumes junction temperature remains ≤150°C; exceeding this triggers thermal foldback starting at 160°C and latch-off at 175°C. The MC33886DH achieves this with 120 mΩ typical R_DS(ON) per FET at 25°C.

Does the MC33886DH require an external charge pump capacitor?

Yes, the MC33886DH requires an external capacitor (up to 33 nF) connected between the CCP pin and PGND. While the device can operate without it, the capacitor stabilizes the internal charge pump voltage, reduces switching noise, and ensures reliable operation at maximum PWM frequency (10 kHz) and low V+ (5.0 V). Omitting the capacitor may cause erratic gate drive and reduced current capability in the MC33886DH.

How does the fault status (FS) pin function on the MC33886DH?

The FS pin on the MC33886DH is an open-drain, active-low output that reports undervoltage, short-circuit, or overtemperature faults. It requires an external pull-up resistor to 5.0 V. When any fault occurs, FS pulls low within 4.0 µs (typical); recovery requires toggling either D1 (from high to low) or D2 (from low to high) to clear the latch and restore normal operation. This behavior is documented in the MC33886DH truth table and functional description.

Can the MC33886DH drive a bipolar stepper motor?

Yes, the MC33886DH can drive a bipolar stepper motor when two units are used - one for each phase. Each MC33886DH controls one winding via independent IN1/IN2 inputs, enabling full-step, half-step, and microstepping with external timing logic. The device's 10 kHz PWM support and active current limiting help manage winding inductance and prevent thermal saturation, making dual MC33886DH configurations viable for low-cost, medium-torque stepper systems.

What is the purpose of the DNC pins (8 and 20) on the MC33886DH?

Pins 8 and 20 on the MC33886DH are designated "Do Not Connect" (DNC) - they serve internal manufacturing test functions only and have no electrical role in normal operation. These pins must either be left floating or tied to ground on the PCB; connecting them to active signals will compromise device reliability. This differs from the earlier MC33186DH1, where Pin 8 was the COD (Current Output Detect) pin - a key revision noted in the MC33886DH datasheet.