My Inquiry
My Account
NXP Semiconductors MC33982EHFKR2
- Part No.:
- MC33982EHFKR2
- Manufacturer:
- NXP Semiconductors
- Package:
- 16-PowerQFN
- Datasheet:
-
MC33982EHFKR2.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,061
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC33982EHFKR2 from NXP Semiconductors is a single-channel intelligent high-side power switch with 2.0 mΩ RDS(on) at 30 A and 13 V, SPI- and parallel-controlled, featuring programmable overcurrent thresholds (15–120 A), 6–27 V operating range, and self-recovery protection for automotive motor and solenoid loads.
For engineers reviewing the MC33982EHFKR2 datasheet, MC33982EHFKR2 pinout, MC33982EHFKR2 application, or MC33982EHFKR2 equivalent, this page delivers verified technical context, real-world timing behavior, fault reporting granularity, current-sense accuracy (±13% at 30 A), and validated alternative part selection guidance.
Technical Context
The MC33982EHFKR2 integrates an N-channel MOSFET with active clamp energy rating of 0.6 J and reverse polarity protection down to –16 V. Its dual-mode control supports both SPI-configurable diagnostics (3.0 MHz max) and direct PWM/parallel IN pin operation, enabling fail-safe load management during communication loss.
Internal architecture includes programmable watchdog timeout (310–2500 ms), selectable slew rates (0.15–5.6 V/µs), and two SPI-selectable current sense ratios (1/4900 and 1/34700) with ±13% and ±18% accuracy respectively - all calibrated for VPWR = 9–16 V and TJ ≤ 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(on) | 2.0 mΩ max at IHS = 30 A, VPWWR = 13 V, TJ = 25 °C - enables low conduction loss in high-current 12 V automotive systems |
| Output Current Rating | 60 A continuous (TJ ≤ 150 °C) - supports peak inrush of motors and solenoids without thermal shutdown |
| Operating Voltage | 6.0–27 V on VPWR, 4.5–5.5 V on VDD - compatible with 12 V/24 V battery rails and MCU logic supply |
| SPI Interface | Up to 3.0 MHz clock, 8-bit command frame, daisy-chain capable - allows multi-device configuration with minimal MCU GPIO use |
| Current Sense Accuracy | ±13% at 30 A for CSR0 (1/4900), ±18% at 30 A for CSR1 (1/34700) - enables reliable closed-loop current monitoring without external shunt calibration |
| Overcurrent Thresholds | Low-detection range: 11–55 A (8 levels); High-detection: 72–167 A (3 levels) - configurable blanking times prevent false trips during startup transients |
| Thermal Shutdown | 160–190 °C with 5–20 °C hysteresis - prevents latch-up under sustained overload while allowing safe recovery after cooling |
Pinout & Package
MC33982EHFKR2 uses a 16-pin PQFN (98ARL10521D footprint), 12 mm × 12 mm, thermally enhanced with exposed VPWR tab. Package meets JEDEC J-STD-020C MSL3 reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CSNS | Current sense output | Provides proportional current sink (1/4900 or 1/34700) for ground-referenced voltage generation - enables MCU ADC monitoring without isolation |
| 2 WAKE | Watchdog enable input | Active-high logic signal that arms watchdog timer; internal pull-down ensures safe default OFF state during power-up |
| 3 RST | Reset and sleep control | Active-low input initializing registers and entering <5 µA sleep mode; rising edge starts watchdog - critical for system-level safety sequencing |
| 4 IN | Direct output control | CMOS-level parallel input supporting PWM or static ON/OFF; internal pull-down prevents floating state - used in fail-safe mode |
| 5 FS | Fault status output | Open-drain active-low signal requiring external VDD pull-up - reports aggregated fault condition (not specific fault type) |
| 6 FSI | Fail-safe configuration | Resistor-programmable pin setting HS output state (ON/OFF) after watchdog timeout - defines deterministic behavior during SPI failure |
| 7 CS | SPI chip select | Active-low enable for SPI communication; internal pull-up allows bus sharing across multiple devices - eliminates need for MCU GPIO per device |
| 8 SCLK | SPI clock input | CMOS-level clock up to 3.0 MHz; internal pull-down ensures idle-low default - synchronizes 8-bit command/data transfers |
| 9 SI | SPI serial input | MSB-first data input; internal pull-down prevents spurious commands during power ramp - accepts register writes and control commands |
| 10 VDD | Digital supply | 4.5–5.5 V supply for SPI logic only; internal regulator maintains partial functionality if VDD fails - decouples digital interface from main power rail |
| 11 SO | SPI serial output | Tri-state CMOS output active only when CS = LOW; provides fault status, configuration readback, and diagnostic data - enables daisy-chaining |
| 12 NC | No connect | Unbonded pad - must remain unconnected per design; no electrical function or thermal benefit |
| 13 GND | Analog/digital ground | Common reference for logic, analog sensing, and current monitor - requires low-impedance PCB plane connection to minimize noise coupling |
| 14 VPWR | Main power input | Backside-exposed tab connecting to 6–27 V battery rail; carries full load current and dissipates heat - must be soldered to thermal pad |
| 15–16 HS | High-side output | Parallel-connected output pins delivering protected power to load; 2.0 mΩ RDS(on) and active clamp limit voltage spikes during inductive turn-off |
Key Features
| Feature | Design Value |
|---|---|
| Self-protected high-side switching | Integrated overtemperature, overvoltage (28–36 V), undervoltage (5.0–6.0 V), open/short-load detection, and active clamp - eliminates need for external protection circuitry |
| Programmable fault response | SPI-configurable overcurrent trip levels, blanking times (0.08–202 ms), and watchdog timeout (310–2500 ms) - adapts protection to specific load dynamics |
| Dual-control architecture | Simultaneous SPI configuration and parallel IN pin control - enables seamless transition to fail-safe mode upon SPI interruption |
| High-accuracy current monitoring | Two selectable sense ratios (1/4900, 1/34700) with ±13% and ±18% accuracy at 30 A - supports precise load diagnostics without external shunt resistor |
| Reverse polarity protection | Withstands –16 V VPWR with no damage - critical for automotive jump-start scenarios and battery terminal reversal |
Applications
| Automotive Seat Motor Control | Commercial Vehicle Solenoid Actuation |
|---|---|
|
Use Scenario: Driving bidirectional seat adjustment motors with high inrush current and stall conditions in passenger vehicles. IC Role / Device Role / Timing Role: High-side switch providing controlled 12 V power delivery, current monitoring for stall detection, and thermal shutdown during jammed operation. Use Value: Replaces electromechanical relays with 2.0 mΩ RDS(on), reducing contact wear and enabling real-time current-based position estimation via CSNS feedback. |
Use Scenario: Controlling pneumatic brake solenoids in heavy-duty trucks where vibration, temperature extremes, and EMI are present. IC Role / Device Role / Timing Role: Robust high-side driver with –16 V reverse polarity tolerance, programmable overcurrent blanking, and fail-safe FSI-defined state after watchdog timeout. Use Value: Eliminates fuse replacement and relay sticking failures; SPI diagnostics allow predictive maintenance by logging repeated overcurrent events. |
| Off-Highway Equipment Lighting | Industrial HVAC Damper Actuators |
|
Use Scenario: Switching LED and halogen lighting loads in construction and agricultural machinery exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Power switch managing resistive lighting loads with inrush suppression via programmable slew rate (0.15–3.4 V/µs). Use Value: Prevents LED current surge damage using slow slew rate mode; undervoltage lockout (5.0–6.0 V) avoids erratic behavior during battery brownouts. |
Use Scenario: Driving 24 V DC damper motors in commercial HVAC systems requiring long cable runs and ESD resilience. IC Role / Device Role / Timing Role: Protected high-side driver with HBM ±2000 V ESD rating, open-load detection during motor disconnection, and SPI-readback of fault history. Use Value: Reduces field service calls by detecting open windings or broken cables remotely via SO-reported diagnostics instead of manual continuity checks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33982CHFKR2 | Higher clamp energy (1.0 J vs. 0.6 J), identical pinout and SPI interface - optimized for higher-inductance loads | Preferred for 24 V systems with >16 mH inductive energy storage; same thermal and electrical specs otherwise | Select CHFKR2 when driving larger solenoids or motors with longer cable inductance requiring stronger clamping |
| TPS4H160-Q1 | Lower RDS(on) (1.6 mΩ), 40 V abs max, no parallel IN pin, fixed 1.5 ms overcurrent blanking - TI's automotive-qualified alternative | Lacks programmable blanking and dual-control mode; requires external current sense for monitoring | Choose TPS4H160-Q1 only when absolute lowest conduction loss is prioritized and SPI configurability is secondary |
Compared with MC33982EHFKR2, MC33982CHFKR2 offers greater inductive energy handling but identical control flexibility, while TPS4H160-Q1 trades programmability for marginally lower RDS(on) and simplified interface - making EHFKR2 optimal for complex, adaptive load protection.
Availability
MC33982EHFKR2 is available at Aetrix Electronics and suitable for automotive seat control, commercial vehicle solenoid actuation, off-highway lighting, and industrial HVAC damper systems requiring stable component supply across extended temperature ranges and harsh EMC environments.
Supply support for MC33982EHFKR2 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, with deep expertise in power management and functional safety.
The MC33982EHFKR2 belongs to NXP's SBC (System Basis Chip) and high-side switch product line, engineered specifically for ASIL-B compliant automotive power distribution and robust industrial load control.
FAQ
What is the maximum continuous output current rating for the MC33982EHFKR2?
The MC33982EHFKR2 supports 60 A continuous output current as long as junction temperature remains below 150 °C. This rating assumes proper PCB thermal design with the VPWR tab soldered to a ≥200 mm² copper area. At 30 A and 25 °C ambient, RDS(on) is 2.0 mΩ, yielding only 1.8 W conduction loss - well within thermal limits for standard 2-layer boards.
How does the MC33982EHFKR2 handle inductive load turn-off voltage spikes?
The MC33982EHFKR2 incorporates an active clamp circuit rated for 0.6 J of inductive energy dissipation. During HS turn-off, the internal clamp activates to limit VPWR overshoot to ≤41 V, protecting downstream components. This is validated per L = 16 mH, RL = 0 Ω, VPWR = 12 V, TJ = 150 °C test conditions - matching typical automotive solenoid and motor flyback profiles.
Can the MC33982EHFKR2 operate without an external microcontroller?
Yes - the MC33982EHFKR2 supports standalone operation via its parallel IN pin, which accepts CMOS-level signals for direct ON/OFF or PWM control. When SPI communication fails or is disabled, the device defaults to fail-safe mode governed by the FSI pin resistance. This dual-control architecture ensures functional safety compliance without requiring constant MCU supervision.
What are the key differences between MC33982EHFKR2 and MC33982CHFKR2?
The MC33982EHFKR2 and MC33982CHFKR2 share identical pinout, SPI interface, temperature range (–40 to 125 °C), and RDS(on). Their primary difference is clamp energy rating: EHFKR2 is rated for 0.6 J, while CHFKR2 supports 1.0 J. This makes CHFKR2 better suited for higher-inductance loads like large 24 V solenoids, whereas EHFKR2 targets cost-optimized 12 V applications with moderate energy storage.
Does the MC33982EHFKR2 support daisy-chained SPI communication?
Yes - the MC33982EHFKR2 supports true daisy-chain topology via its SI and SO pins. The SI pin accepts serial data from the MCU or upstream device, while SO outputs shifted-out data to the next device. With CS asserted low, each device processes its own 8-bit command and forwards remaining bits - enabling control of up to 16 devices with only three MCU pins (CS, SCLK, SI/SO shared).
MC33982EHFKR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-PowerQFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- SPI, PWM
- Voltage - Load:
- 6V ~ 27V
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Current - Output (Max):
- 60A
- Rds On (Typ):
- 3.4mOhm (Max)
- Input Type:
- Non-Inverting
- Features:
- Slew Rate Controlled, Status Flag, Watchdog Timer
- Fault Protection:
- Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-HQFN (12x12)
MC33982EHFKR2 FAQ
1.How can I place an order for MC33982EHFKR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33982EHFKR2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC33982EHFKR2 reliable?
The price and inventory of MC33982EHFKR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33982EHFKR2 is usually 5 days.
3.What payment methods are accepted for MC33982EHFKR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33982EHFKR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33982EHFKR2?
MC33982EHFKR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33982EHFKR2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC33982EHFKR2?
For technical support, including MC33982EHFKR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33982EHFKR2 requirements.
6.How does Aetrix verify that MC33982EHFKR2 is sourced from the original manufacturer or authorized distributors?
All MC33982EHFKR2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC33982EHFKR2 meets industry standards.
7.What is the process for return or replacement of MC33982EHFKR2?
All MC33982EHFKR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33982EHFKR2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC33982EHFKR2 part is unused and in its original packaging.
Return procedure for MC33982EHFKR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC33982EHFKR2 Tags
-
TPS22919DCKR
Texas Instruments
-
MIC2091-1YM5-TR
Microchip Technology
-
MIC2090-1YM5-TR
Microchip Technology
-
TPS22995RZFR
Texas Instruments
-
TPS22975DSGR
Texas Instruments
-
SIP32510DT-T1-GE3
Vishay Siliconix
-
ULN2003D1013TR
STMicroelectronics
-
MIC2005A-1YM5-TR
Microchip Technology
-
MIC2005A-1YM6-TR
Microchip Technology
-
TPS22916BYFPR
Texas Instruments
-
TPS22917DBVR
Texas Instruments
-
ULN2003APWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
