NXP Semiconductors MC33880DWB

Overview

MC33880DWB from NXP Semiconductors (formerly Freescale) is a configurable octal high-side/low-side power switch IC with 8-bit SPI interface and dual PWM-capable direct-control inputs (IN5, IN6). It delivers R_DS(ON) ≤ 0.55 Ω at 25°C, ±45 V / −20 V output clamping, 0.8–2.0 A programmable current limiting, and operates across 5.5–24.5 V VPWR for automotive body control modules and lighting systems.

For engineers reviewing the MC33880DWB datasheet, MC33880DWB pinout, MC33880DWB application, or MC33880DWB equivalent, this page provides verified functional identity, validated 32-pin SOICW package mapping, confirmed SPI timing (≤6 MHz), real-world fault reporting behavior (DO pin logic-1 on open/short), and two production-validated alternative parts with documented configuration differences.

Technical Context

The MC33880DWB integrates SMARTMOS™ 5 technology-combining CMOS logic, bipolar/MOS analog circuitry, and independent double-diffused DMOS power transistors-to enable hardware-configurable high-side or low-side drive per channel. Its internal charge pump supports gate enhancement without external components, while cascaded fault reporting via DO pin enables daisy-chained diagnostics across multiple devices.

Each of the eight outputs features independent overtemperature shutdown (155–185°C), open-load detection (0.3–1.0 mA threshold), short-circuit autoretry, and voltage clamping optimized for inductive load switching: +40 to +55 V for low-side, −15 to −25 V for high-side configurations, with <5.0 μA standby current at 13 V VPWR and 95°C.

Key Specifications

Pinout & Package

The MC33880DWB is housed in a 32-pin SOICW (wide-body) package (Case 1324-02) with four dedicated thermal ground pins (TGND at pins 8, 9, 24, 25) internally connected to the die substrate for enhanced heat dissipation. Thermal resistance junction-to-thermal-ground is 18°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal high-side/low-side switch applications.

Compared with MC33879AEK and TPIC2101PWP, the MC33880DWB uniquely supports hardware-selectable high/low-side topology per channel, dual PWM-direct inputs, and thermal-ground-enhanced 32-pin SOICW packaging-making it optimal for thermally demanding, mixed-topology automotive and industrial load switching.

Availability

MC33880DWB is available at Aetrix Electronics and suitable for automotive body control modules, commercial vehicle lighting systems, industrial HVAC actuator drives, and off-highway equipment solenoid management requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC33880DWB 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 automotive, industrial, and IoT applications, delivering secure, energy-efficient, and highly integrated solutions.

The MC33880DWB belongs to NXP's SMARTMOS™ power switch product line, engineered specifically for robust, fault-resilient control of automotive and industrial inductive/resistive loads under harsh electrical and thermal conditions.

FAQ

What is the maximum SPI clock frequency supported by the MC33880DWB?

The MC33880DWB supports SPI operation up to 6.0 MHz, as specified in Table 5 of the official datasheet. This allows full 8-bit command and status transfer in under 1.34 μs. Operation above 6.0 MHz is not guaranteed and may result in data corruption or missed fault reporting on the DO pin. The MC33880DWB maintains reliable communication at 4.0 MHz across its full −40°C to 125°C operating case temperature range.

Can the MC33880DWB drive both high-side and low-side loads simultaneously?

Yes, the MC33880DWB supports simultaneous high-side and low-side drive: each of its eight channels can be independently configured via PCB routing-Sx pins connected to load (high-side) or GND (low-side), Dx pins connected to battery (high-side) or load (low-side). This hardware-level flexibility enables mixed-topology designs without firmware changes. The MC33880DWB's +45 V low-side clamp and −20 V high-side clamp operate concurrently per channel.

How does the MC33880DWB report faults on the DO pin?

The MC33880DWB reports faults on the DO pin as logic-1 during CS low: each rising edge of SCLK shifts out one status bit, MSB-first, corresponding to outputs 8 through 1. A logic-1 indicates any fault condition-open load (off-state), short-to-battery/ground (on-state), or overtemperature-regardless of drive configuration. Normal operation returns logic-0. The MC33880DWB requires >300 μs between accesses to read all fault bits reliably.

What is the purpose of the TGND pins on the MC33880DWB?

The MC33880DWB features four dedicated thermal ground pins (TGND at pins 8, 9, 24, 25) internally bonded to the die substrate to enhance heat transfer. When soldered to a large copper pour or internal ground plane, they reduce thermal resistance from junction to PCB by 55% versus standard GND pins-achieving 18°C/W junction-to-thermal-ground. This enables higher continuous current capability and improved reliability in thermally constrained automotive and industrial enclosures using the MC33880DWB.

Does the MC33880DWB require external components for basic operation?

No external components are required for basic operation of the MC33880DWB: internal charge pump, reverse-battery protection, output clamping, and overtemperature shutdown are fully integrated. However, external pull-down resistors on IN5/IN6 are recommended if PWM control is unused, and a 100 nF decoupling capacitor on VDD is advised per datasheet guidelines. The MC33880DWB functions autonomously with only VPWR, VDD, GND, and SPI connections-no external FETs, TVS diodes, or current-sense resistors needed.