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Diodes Incorporated ZXMS81200SP-13
- Part No.:
- ZXMS81200SP-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
ZXMS81200SP-13.pdf
- Description:
- HIGH SIDE INTELLIFET SO-8EP T&R
- Quantity:
- Payment:
- Shipping:
Inventory:4,655
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Product details
Overview
ZXMS81200SP from Diodes Incorporated is a single-channel high-side power switch IC with integrated current and temperature sensing, 400 mΩ RDS(ON) at +150°C, 5–28 V operating range, and diagnostic IS output proportional to load current. It serves as a smart replacement for relays and discrete switches in automotive and industrial 12V grounded-load control, delivering fault reporting for overload, overtemperature, short-circuit, and open-load conditions.
For engineers reviewing the ZXMS81200SP datasheet, ZXMS81200SP pinout, ZXMS81200SP application, or ZXMS81200SP equivalent, this device supports logic-level (3.3V/5V) enable, provides analog current-sense feedback with defined fault signaling, and integrates active clamping for inductive load turn-off and load-dump transients up to 41 V.
Technical Context
The ZXMS81200SP implements a monolithic n-channel vertical power MOSFET with charge-pumped gate drive, enabling high-side switching without external bootstrap circuitry. Its internal protection architecture includes dynamic overtemperature cycling (∆TJ(SW) = 80 K), absolute thermal shutdown (TJ(SC) = +150°C to +200°C), and voltage-dependent current limiting (IL5(SC) = 6–12 A).
Diagnostic functionality centers on the IS pin: it delivers linear sense current (KILIS = 300) during normal operation, switches to IIS(FAULT) under fault conditions, and enters high-impedance state when DEN is low. Open-load detection operates via dual-mode sensing-load current analysis in ON state and output voltage monitoring in OFF state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 5 V to 28 V - supports wide-range 12V automotive and industrial supply rails with undervoltage lockout (3.3 V threshold) and load-dump immunity up to 41 V. |
| RDS(ON) @ +150°C | 400 mΩ - ensures low conduction loss and thermal stability under sustained 1.5 A nominal load at elevated junction temperatures. |
| Current Sense Ratio | KILIS = 300 - enables precise analog monitoring of load current down to 25 mA with regulated VDS(NL) ≤ 25 mV for accuracy. |
| Fault Reporting | Dedicated IS pin outputs IIS(FAULT) for overload, overtemperature, short-circuit, and open-load (OFF-state), eliminating need for external comparators. |
| Switching Speed | tON = 20–160 µs, tOFF = 20–260 µs - optimized for EMC-compliant resistive/inductive load control without external snubbers. |
| Thermal Resistance | RθJC = 5.2 °C/W - enables efficient heat transfer to PCB heatsink via exposed pad (SO-8EP), supporting 1.6 W power dissipation at Tamb = +85°C. |
Pinout & Package
Package: SO-8EP (Type E) with exposed thermal pad (EP) connected to VS pin for enhanced thermal performance and mechanical robustness in high-vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference and thermal path | Common return for logic, diagnostics, and power stage; loss-of-ground detection triggers automatic shutdown. |
| 2 IN | Logic enable input | Active-high 3.3V/5V-compatible control signal; internally pulled down to ensure default-OFF safety state. |
| 3 DEN | Diagnostic enable | Controls IS pin impedance: high = active sense mode, low = high-Z for multi-device IS bus sharing. |
| 4 IS | Analog diagnostic output | Delivers IOUT/300 during normal operation; switches to fixed IIS(FAULT) under fault conditions for deterministic monitoring. |
| 5 NC | No connection | Internally unconnected; must remain floating per design-no external tie required or recommended. |
| 6,7,8 OUT | Power output terminals | Parallel-connected drain nodes delivering switched +VS to load; rated for repetitive short-circuit (100 kcycles) and inductive ring-off clamping. |
| EP (exposed pad) | Supply voltage connection | Internally tied to VS; soldered to PCB copper pour for low-inductance, high-current return and thermal conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-dependent current limiting | Adjusts trip point dynamically with VDS, enabling robust overload handling across varying supply and load conditions without fixed resistor thresholds. |
| Open-load detection (dual-mode) | Uses IS current in ON state and VOUT level in OFF state-eliminates need for separate voltage dividers or external comparators. |
| Active output clamp (VDS(AZ) = 41–53 V) | Prevents avalanche failure during inductive turn-off by actively clamping VDS using MOSFET channel conduction instead of passive Zener networks. |
| Loss-of-ground protection | Monitors GND integrity and forces immediate shutdown if ground path opens-critical for functional safety in automotive body electronics. |
| Low quiescent current (0.1–0.5 µA) | Enables always-on applications such as battery-powered modules where standby power budget is sub-1 µA. |
Applications
| Automotive Body Control | Industrial PLC Output Module |
|---|---|
|
Use Scenario: Controlling headlamp, fog lamp, or interior lighting circuits in modern vehicle body control modules (BCM). IC Role / Device Role / Timing Role: High-side switch with real-time current monitoring and open-load fault detection for LED/resistive loads. Use Value: Replaces electromechanical relays with 10x smaller footprint, eliminates contact wear, and enables predictive maintenance via IS analog feedback. |
Use Scenario: Driving solenoids, valves, and small motors in programmable logic controller (PLC) digital output cards. IC Role / Device Role / Timing Role: Protected high-side driver with integrated short-circuit and overtemperature response for 24V DC field devices. Use Value: Reduces external protection components by >70%, supports hot-swap capability, and provides deterministic fault reporting to PLC CPU via IS pin. |
| Smart Fuse Replacement | Automotive HVAC Blower Control |
|
Use Scenario: Solid-state replacement for blade fuses in automotive junction boxes and power distribution units (PDU). IC Role / Device Role / Timing Role: Current-limited high-side switch with diagnostic current-sense and auto-restart overtemperature behavior. Use Value: Enables fuseless architecture with resettable protection, eliminates manual fuse replacement, and logs fault history via IS current signature. |
Use Scenario: Controlling brushed DC blower motors in automotive heating, ventilation, and air conditioning (HVAC) systems. IC Role / Device Role / Timing Role: High-current (1.5 A nominal), high-di/dt tolerant switch with inductive clamp and stall detection. Use Value: Prevents MOSFET destruction during motor stall or startup surge; IS pin reports motor current for closed-loop speed regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon BTS50080-1TAD | Higher RDS(ON) (800 mΩ @ +150°C), no integrated current-sense ratio-requires external shunt and amplifier. | Lacks analog IS output; fault reporting limited to digital open-drain flag only. | Preferred where cost sensitivity outweighs diagnostic granularity and board space permits external sensing. |
| STMicroelectronics VNQ7E100AJTR | Lower nominal current (1.0 A), integrated SPI interface for configuration and diagnostics-not analog IS output. | Requires microcontroller interface; not drop-in compatible for analog monitoring architectures. | Chosen when system-level diagnostics (e.g., channel status, temperature, error codes) are managed digitally rather than via analog current loop. |
Compared with BTS50080-1TAD and VNQ7E100AJTR, the ZXMS81200SP uniquely combines analog current-sense (KILIS = 300), low RDS(ON), and SO-8EP thermal performance in a pin-compatible 3.3V/5V logic-driven package-ideal for analog-centric, space-constrained, and thermally demanding high-side switching.
Availability
ZXMS81200SP is available at Aetrix Electronics and suitable for automotive body control, industrial PLC output modules, smart fuse replacement, and HVAC blower control requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.
Supply support for ZXMS81200SP 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
Diodes Incorporated is a global semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, computing, and consumer markets.
The ZXMS81200SP belongs to Diodes' IntelliFET® family of intelligent high-side switches-designed specifically for replacing relays and discrete protection circuits in 12V/24V automotive and industrial power distribution systems.
FAQ
What is the maximum continuous load current supported by the ZXMS81200SP?
The ZXMS81200SP supports a nominal load current of 1.5 A at Tamb = +85°C with junction temperature maintained below +150°C. Under transient overload, its current-limiting function activates at 6–12 A depending on VDS, and thermal protection cycles to prevent permanent damage-making it suitable for pulsed or inrush-heavy loads like incandescent lamps and motors.
How does the IS pin behave during an open-load condition?
In OFF-state open-load, the IS pin outputs IIS(FAULT)-a defined diagnostic current distinct from normal sense current-to indicate missing load. In ON-state open-load, IS current drops near zero due to absence of load current, enabling dual-mode detection without external circuitry. The DEN pin must be high for active sensing; when low, IS enters high-impedance state.
Can the ZXMS81200SP withstand automotive load-dump transients?
Yes-the device is rated for 41 V load-dump transients per ISO 7637-2, with internal clamping on VS-to-GND (VS(AZ) = 41–53 V) and VS-to-OUT (VDS(AZ) = 41–53 V). External resistors (RGND = 150 Ω, RIN = RDEN = 4.7 kΩ) are recommended to limit transient-induced currents into logic pins while preserving full protection functionality.
Is the ZXMS81200SP qualified for automotive applications?
The ZXMS81200SP is designed to automotive-grade specifications and has an automotive-qualified variant (ZXMS81200SPQ) documented separately per AEC-Q100. While the standard ZXMS81200SP shares identical die and core functionality, its qualification status depends on final packaging and test lot traceability-customers requiring full AEC-Q100 compliance should specify the Q-suffix part number and verify qualification documentation with Diodes Incorporated.
ZXMS81200SP-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- 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:
- Logic
- Voltage - Load:
- 28V ~ 28V
- Voltage - Supply (Vcc/Vdd):
- 5V ~ Not Required
- Current - Output (Max):
- 1.5A
- Rds On (Typ):
- 200mOhm
- Input Type:
- Non-Inverting
- Features:
- Slew Rate Controlled
- Fault Protection:
- Current Limiting (Fixed), Open Load Detect, Over Load, Over Temperature, Over Voltage, Reverse Battery, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO-EP (Type E)
ZXMS81200SP-13 FAQ
1.How can I place an order for ZXMS81200SP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXMS81200SP-13 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 ZXMS81200SP-13 reliable?
The price and inventory of ZXMS81200SP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXMS81200SP-13 is usually 5 days.
3.What payment methods are accepted for ZXMS81200SP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXMS81200SP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXMS81200SP-13?
ZXMS81200SP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXMS81200SP-13 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 ZXMS81200SP-13?
For technical support, including ZXMS81200SP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXMS81200SP-13 requirements.
6.How does Aetrix verify that ZXMS81200SP-13 is sourced from the original manufacturer or authorized distributors?
All ZXMS81200SP-13 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 ZXMS81200SP-13 meets industry standards.
7.What is the process for return or replacement of ZXMS81200SP-13?
All ZXMS81200SP-13 units undergo pre-shipment inspection (PSI). If there is an issue with ZXMS81200SP-13, 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 ZXMS81200SP-13 part is unused and in its original packaging.
Return procedure for ZXMS81200SP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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