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NXP Semiconductors MCZ33998EGR2
- Part No.:
- MCZ33998EGR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MCZ33998EGR2.pdf
- Description:
- IC REG TRIPLE CHRPMP/LNR 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,139
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Product details
Overview
MCZ33998EGR2 from NXP (formerly Freescale) is a multi-output automotive power supply IC integrating a 5.0 V/1400 mA step-down switching regulator, a 2.6 V/400 mA linear post-regulator with external NPN pass transistor (e.g., BCP68), a 2.6 V/10 mA standby regulator (VKAM), and two protected 5.0 V/200 mA sensor supplies (VREF1/VREF2). It operates from 6.0–26.5 V input with 40 V transient tolerance and supports power sequencing for MPC5xx/683xx microcontrollers in engine control modules.
For engineers reviewing the MCZ33998EGR2 datasheet, MCZ33998EGR2 pinout, MCZ33998EGR2 application, or MCZ33998EGR2 equivalent, key selection criteria include its sensorless current-mode buck controller (750 kHz), dual enable inputs (EN/SNSEN), open-drain PWROK/VKAMOK supervision outputs, short-to-battery/short-to-ground protection on VREF outputs, and Pb-free 24-pin SOICW (EG suffix) packaging.
Technical Context
The MCZ33998EGR2 implements a sensorless current-mode control architecture for its 750 kHz buck converter, delivering 5.0 V ±2% at up to 1400 mA total output while coordinating soft-start (5–15 ms), fault-off retry, and power-up delay timers. Its internal P-channel MOSFET (BVDSS = 45 V, ISCSW1 = –7.0 A) switches directly from VPWR to VSW, eliminating external high-side drive complexity.
Power management is segmented across three domains: main regulation (VDDH + VDDL), sensor supply (VREF1/VREF2 with LDMOS switches, 280–455 mΩ RDS(ON), 0.5–2.0 µs fault detection), and keep-alive standby (VKAM with 2.5–2.7 V output, 10 mA capability, and VKAMOK fault signaling). All regulators feature undervoltage shutdown with retry capability and operate across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6.0 V to 26.5 V nominal; withstands 40 V transients - enables direct battery connection in 12 V/24 V automotive systems without external clamping. |
| VDDH Output | 5.0 V ±2% @ 1400 mA total - powers digital/analog circuits of ECMs; includes active discharge (1.0–15 Ω) and line/load regulation ≤ ±30 mV. |
| VDDL Output | 2.6 V @ 400 mA via external NPN pass transistor - reduces IC power dissipation; uses DRVL base drive (5–25 mA) and FBL feedback loop. |
| VKAM Output | 2.6 V @ 10 mA low-quiescent standby regulator - maintains nonvolatile SRAM and wake-up logic during key-off; features VKAMOK fault flag. |
| VREF1/VREF2 | 5.0 V @ 200 mA each with integrated short-to-battery/short-to-ground protection and 5–20 ms retry timer - powers analog sensors safely in harsh environments. |
| Supervision Outputs | PWROK (open-drain, 200 Ω max RDS(ON)) and VKAMOK (open-drain, 50–200 Ω) - provide system reset coordination and fault monitoring with programmable delay timers. |
| Package | 24-pin SOICW, Pb-free (EG suffix), RθJA = 60 °C/W - compatible with standard automotive PCB assembly and thermal management practices. |
Pinout & Package
MCZ33998EGR2 is housed in a 24-pin wide-body SOIC (SOICW) package with exposed pad thermal enhancement per JEDEC MS-013. Pin spacing is 1.27 mm, body width 7.5 mm, and total package dimensions 15.4 × 7.5 × 2.39 mm. The EG suffix denotes RoHS-compliant Pb-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSW (Pin 9) | Switching node | Drain of internal P-channel MOSFET; connects VPWR to inductor; requires careful layout to minimize EMI and ringing. |
| FBL (Pin 14) | VDDL feedback input | Sense point for 2.6 V linear regulator loop; connects to emitter of external NPN pass transistor for closed-loop regulation. |
| DRVL (Pin 13) | VDDL base drive output | Provides 5–25 mA base current to external NPN transistor (e.g., BCP68); enables efficient 2.6 V post-regulation with minimal IC dissipation. |
| SNSEN (Pin 22) | Sensor supply enable | Logic-level input controlling VREF1/VREF2 outputs; low disables both sensor supplies independently of main regulator. |
| VKAMOK (Pin 1) | Keep-alive fault monitor | Open-drain output pulled low when VKAM falls below 2.4 V threshold; requires external pull-up to VKAM for key-off diagnostics. |
| PWROK (Pin 10) | Power-good status | Open-drain output released after VDDH/VDDL stabilize and power-on reset timer expires; signals MCU readiness for boot sequence. |
| EN (Pin 23) | Main enable input | Active-high logic input enabling full device operation; <1.0 V disables all regulators except VKAM, reducing quiescent current to 5–15 µA. |
| CRES (Pin 3) | Charge pump reservoir | Connects to 22 nF capacitor to generate ~12–15 V gate drive for internal P-MOSFET; critical for reliable high-side switching. |
Key Features
| Feature | Design Value |
|---|---|
| Sensorless current-mode buck control | Eliminates external current-sense resistor and improves line/load transient response without sacrificing stability. |
| Dual independent enable inputs | EN controls main regulator (VDDH/VDDL); SNSEN independently gates VREF1/VREF2 - enables flexible power domain sequencing and sensor sleep modes. |
| Integrated short-circuit protection | VREF outputs detect short-to-battery or short-to-ground within 0.5–2.0 µs and initiate 5–20 ms retry cycle - prevents latch-up and supports robust sensor interface design. |
| Active discharge on VDDH/VDDL | Internal 1.0–15 Ω discharge paths rapidly collapse outputs during shutdown - avoids floating rails and ensures clean power-down for downstream logic. |
| Keep-alive standby regulator (VKAM) | Delivers 2.6 V at 10 mA with <100 mV load regulation and VKAMOK fault flag - sustains memory and wake-up circuitry during vehicle ignition-off periods. |
| Automotive-grade thermal performance | RθJA = 60 °C/W and operational junction temperature up to +150°C - validated for under-hood deployment in engine control units. |
Applications
| Engine Control Module (ECM) | Transmission Control Unit (TCU) |
|---|---|
Use Scenario: Powers MPC5xx microcontroller, CAN transceiver, and analog sensor interfaces in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Provides sequenced 5.0 V (VDDH), 2.6 V (VDDL), and dual 5.0 V sensor rails (VREF1/VREF2) with synchronized PWROK assertion and fault recovery. Use Value: Enables deterministic boot timing, eliminates need for discrete supervisors, and protects against sensor wiring faults without external protection components. | Use Scenario: Supplies power to 683xx-based transmission controllers, solenoid drivers, and position/temperature sensors in automatic transmissions. IC Role / Device Role / Timing Role: Delivers regulated VDDH for digital core, VDDL for analog peripherals, and isolated VREF outputs for precision sensor biasing with retry-enabled fault handling. Use Value: Reduces BOM count by integrating five regulated outputs and supervision logic into one AEC-Q100 qualified package. |
| Body Control Module (BCM) | Advanced Driver Assistance System (ADAS) Sensor Hub |
Use Scenario: Manages power for LIN/CAN gateways, door module MCUs, and interior lighting drivers in vehicle body electronics. IC Role / Device Role / Timing Role: Uses VKAM for always-on memory retention and EN/SNSEN pins to selectively power down subsystems during sleep mode. Use Value: Achieves <15 µA quiescent current in key-off state while maintaining wake-up capability via VKAM-powered interrupt logic. | Use Scenario: Powers radar/LiDAR sensor signal conditioning circuits, ADC references, and low-power microcontrollers in centralized ADAS domain controllers. IC Role / Device Role / Timing Role: Supplies tightly regulated 5.0 V sensor rails with <280 mΩ on-resistance and sub-2 µs fault detection to prevent system-wide disruption from single-sensor shorts. Use Value: Ensures functional safety compliance by isolating fault propagation between sensor channels and supporting ASIL-B diagnostic coverage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail automotive power supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33FS4500AEGR2 | Higher integration: includes CAN transceiver, watchdog, and windowed voltage monitors; 5.0 V/1.5 A buck + 3.3 V/300 mA LDO; no external pass transistor required for VDDL. | Targets next-gen ASIL-B systems requiring integrated communication and safety monitoring; lacks dedicated VKAM rail and separate SNSEN control. | Select when CAN interface and enhanced diagnostics are needed; not drop-in due to different pinout and feature set. |
| TPS65381AQDAPRQ1 | TI automotive PMIC: 5.0 V/2 A buck + dual 3.3 V/300 mA LDOs + 5.0 V/200 mA sensor rail; integrated watchdog and reset generator; no VKAM or SNSEN functionality. | Designed for safety-critical applications with ISO 26262 support; offers higher VDDH current but omits standalone keep-alive regulator and independent sensor enable. | Choose for systems requiring ASIL-D ready PMIC with built-in safety mechanisms; requires redesign for VKAM-dependent memory retention. |
Compared with MC33FS4500AEGR2 and TPS65381AQDAPRQ1, the MCZ33998EGR2 uniquely combines dedicated VKAM standby regulation, dual independent sensor enable (SNSEN), and external-pass-transistor VDDL flexibility - making it optimal for legacy MPC5xx/683xx-based ECMs where cost, thermal simplicity, and proven field reliability are prioritized over integrated safety peripherals.
Availability
MCZ33998EGR2 is available at Aetrix Electronics and suitable for engine control modules, transmission control units, body control modules, and ADAS sensor hubs requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for MCZ33998EGR2 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 deep heritage in automotive power management through its acquisition of Freescale.
The MCZ33998EGR2 belongs to NXP's legacy automotive power supply IC family, designed specifically to replace discrete regulator combinations in engine and transmission control units while meeting AEC-Q100 Grade 1 requirements and supporting MPC5xx/683xx microprocessor power sequencing.
FAQ
What is the maximum transient voltage rating for MCZ33998EGR2?
The MCZ33998EGR2 supports up to 40 V transient voltage on the VPWR and KA_VPWR pins, as specified in its Absolute Maximum Ratings table. This allows direct connection to automotive battery rails without additional transient voltage suppression beyond standard reverse-battery diode protection on VPWR. The device remains functional during load-dump events common in 12 V and 24 V vehicle electrical systems.
Does MCZ33998EGR2 require an external pass transistor for the 2.6 V linear regulator?
Yes, the MCZ33998EGR2 requires an external NPN pass transistor (e.g., BCP68) for its 2.6 V linear regulator (VDDL). The IC provides DRVL base drive output and FBL feedback input to close the regulation loop. This architecture shifts power dissipation away from the IC die, enabling 400 mA output while maintaining safe junction temperatures in high-ambient automotive environments.
How does the MCZ33998EGR2 handle short-circuit faults on its VREF1 and VREF2 outputs?
The MCZ33998EGR2 detects short-to-battery or short-to-ground faults on VREF1/VREF2 within 0.5–2.0 µs using integrated LDMOS current sensing. Upon detection, the affected output is disabled and a 5–20 ms retry timer initiates. After timeout, the output attempts automatic re-enabling. This behavior prevents latch-up and supports robust sensor interface design without external fault-handling circuitry.
What is the purpose of the CRES pin on MCZ33998EGR2?
Pin 3 (CRES) on the MCZ33998EGR2 connects to an external 22 nF reservoir capacitor that supports the internal charge pump. This pump generates ~12–15 V to fully enhance the internal P-channel MOSFET gate, ensuring low RDS(ON) and efficient switching at minimum input voltages. Omitting or undersizing the CRES capacitor causes VSW instability and potential regulator failure.
Can MCZ33998EGR2 operate with only the KA_VPWR supply active?
Yes, the MCZ33998EGR2 can operate using only KA_VPWR (Pin 2) as the primary supply, such as in modules with separate battery-keep-alive and ignition-switched rails. Both VPWR and KA_VPWR have identical voltage ratings (–0.3 V to 45 V), and internal power routing allows full functionality-including VKAM standby regulation-even when VPWR is disconnected, provided KA_VPWR meets minimum operating voltage (6.0 V).
MCZ33998EGR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Topology:
- Charge Pump (1), Linear (LDO) (2)
- Number of Outputs:
- 3
- Frequency - Switching:
- 750kHz
- Voltage/Current - Output 1:
- 5V, 1.4A
- Voltage/Current - Output 2:
- 2.6V, 400mA
- Voltage/Current - Output 3:
- 2.6V, 400mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 6V ~ 26.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
MCZ33998EGR2 FAQ
1.How can I place an order for MCZ33998EGR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33998EGR2 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 MCZ33998EGR2 reliable?
The price and inventory of MCZ33998EGR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33998EGR2 is usually 5 days.
3.What payment methods are accepted for MCZ33998EGR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33998EGR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33998EGR2?
MCZ33998EGR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33998EGR2 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 MCZ33998EGR2?
For technical support, including MCZ33998EGR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33998EGR2 requirements.
6.How does Aetrix verify that MCZ33998EGR2 is sourced from the original manufacturer or authorized distributors?
All MCZ33998EGR2 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 MCZ33998EGR2 meets industry standards.
7.What is the process for return or replacement of MCZ33998EGR2?
All MCZ33998EGR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33998EGR2, 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 MCZ33998EGR2 part is unused and in its original packaging.
Return procedure for MCZ33998EGR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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