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Monolithic Power Systems Inc. MP5000SDQ-LF-Z
- Part No.:
- MP5000SDQ-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MP5000SDQ-LF-Z.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,680
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Product details
Overview
MP5000SDQ-LF-Z from Monolithic Power Systems is a programmable current-limit load switch with integrated 40mΩ DMOS FET, adjustable 1–5A current limit via external resistor, 0.9ms default output slew rate (dv/dt pin), and dual overvoltage/undervoltage protection (clamp at 15V, UVLO at 8.5V). It operates from 10–18V input and delivers up to 5A continuous load current in hot-swap applications for laptops and PC cards.
For engineers reviewing the MP5000SDQ-LF-Z datasheet, MP5000SDQ-LF-Z pinout, MP5000SDQ-LF-Z application, or MP5000SDQ-LF-Z equivalent, key selection criteria include programmable trip/hold current thresholds, thermal latch shutdown at 175°C, tri-state Enable/Fault signaling, QFN10 (3×3mm) thermal pad layout, and compatibility with 12V system rail protection.
Technical Context
The MP5000SDQ-LF-Z implements a sense-FET-based current-limit architecture with external resistor programming of both trip (5.0A typ.) and hold (3.7A typ.) thresholds. Its internal charge pump enables full gate drive for low RDS(on) (40mΩ @ 25°C), minimizing conduction loss during normal operation.
It integrates four independent protection mechanisms: under-voltage lockout (UVLO = 8.5V), overvoltage clamping (VCLAMP = 15V), thermal shutdown (TSD = 175°C), and current limiting - all coordinated through a single bi-directional Enable/Fault pin that outputs low (UVLO), mid-level (thermal fault), or high-impedance (normal enable) states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 10V to 18V - supports nominal 12V systems with ±1.5V tolerance and transient headroom. |
| Current Limit Range | 1A to 5A - set by external resistor (e.g., 22Ω yields 3.7A hold / 5.0A trip); enables precise system-level fault margining. |
| RDS(on) | 40mΩ (typ.) @ 25°C - limits I²R power loss to 160mW at 2A, reducing thermal stress on PCB. |
| Thermal Shutdown Threshold | 175°C (latched) - prevents permanent damage during sustained short-circuit events; requires external heatsinking above 250mA hold current. |
| Enable/Fault Pin Logic | Tri-state I/O: Low = disable/clear fault, Mid = thermal fault signal, High-Z = enabled - allows wired-NOR fault bus for multi-rail systems. |
| dv/dt Slew Control | 0.9ms default ramp (dv/dt pin floating); extended via external capacitor - suppresses inrush current without external RC networks. |
| UVLO Threshold | 8.5V (typ.) with 0.8V hysteresis - ensures clean turn-on only after stable 12V rail establishment. |
Pinout & Package
MP5000SDQ-LF-Z uses a thermally enhanced QFN10 package (3mm × 3mm, 0.5mm pitch) with exposed VCC pad (Pin 11) for optimal heat dissipation. The package supports 2.5W continuous power dissipation at +25°C ambient (θJA = 50°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Reference ground | Internal IC reference node; must connect to low-impedance system ground plane. |
| 2 dv/dt | Slew rate control | Float for 0.9ms default rise time; add capacitor to extend ramp for lower inrush dI/dt. |
| 3 Enable/Fault | Bi-directional control & status | Drives low (UVLO), mid (thermal fault), or floats high (enabled); no external pull-up needed. |
| 4 I-Limit | Current threshold programming | Resistor to SOURCE sets trip/hold current; 22Ω → 5.0A/3.7A per datasheet Table 2. |
| 5 N/C | No connection | Must remain unconnected; floating only - no routing or soldering allowed. |
| 6–10 SOURCE | Power FET source terminal | Output node and return path for load current; requires large copper pour for thermal management. |
| 11 VCC (Exposed Pad) | Input power & thermal interface | Primary input voltage (10–18V); exposed pad must be soldered to PCB thermal plane with ≥4 vias. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 40mΩ DMOS FET | Eliminates need for external MOSFET and gate driver; reduces BOM count and layout area in 12V hot-swap rails. |
| Adjustable current limit (1–5A) | Enables one-footprint design across multiple load profiles using only resistor change - no re-spin required. |
| Tri-state Enable/Fault signaling | Allows shared fault bus across multiple MP5000S devices; simplifies system-level fault monitoring without additional logic. |
| Programmable dv/dt slew rate | Prevents supply rail collapse during plug-in events in PC Card and laptop peripheral slots. |
| Latched thermal shutdown | Forces hard reset via UVLO cycle or EN pin toggle - prevents automatic recovery into unsafe fault conditions. |
Applications
| Hot Swap Insertion | PC Card Power Management |
|---|---|
|
Use Scenario: Hot-plugging a PCIe expansion card into a powered laptop motherboard. IC Role / Device Role / Timing Role: Load switch controlling 12V auxiliary rail delivery with controlled inrush and immediate short-circuit cutoff. Use Value: Prevents host rail droop and system reset during insertion; 0.9ms slew rate limits peak inrush to <12A. |
Use Scenario: Power sequencing for ExpressCard/34 modules requiring isolated 12V supply with fault isolation. IC Role / Device Role / Timing Role: Primary current-limited power switch with UVLO validation before enabling downstream regulators. Use Value: Ensures module power only engages after stable 12V rail; 8.5V UVLO avoids brownout-induced data corruption. |
| Laptop Docking Station | Industrial USB-C PD Sink Protection |
|
Use Scenario: Docking station supplying 12V to attached peripherals (HDMI, Ethernet, storage) with shared fault bus. IC Role / Device Role / Timing Role: Multi-rail protector with Enable/Fault pins wired in parallel for coordinated shutdown on any rail fault. Use Value: Single-point fault detection across 4x 12V rails; mid-level fault signal identifies thermal event vs. UVLO without extra sensors. |
Use Scenario: USB-C PD sink adapter protecting internal 12V DC-DC stage from cable short or adapter overvoltage. IC Role / Device Role / Timing Role: Input-side clamp and current limiter placed between PD controller and buck converter input. Use Value: 15V OVP clamping prevents damage to 12V-rated converters during 20V PD negotiation faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable current-limit switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP5014A | Successor device with improved thermal performance (θJA = 42°C/W), wider current range (0.5–6A), and faster fault response (<10μs). | Supports higher ambient temperatures (+105°C case) and tighter current tolerances (±5% vs. ±15% for MP5000S). | Select MP5014A for new designs requiring extended lifetime, higher reliability, or tighter current accuracy. |
| TPS25940L | TI device with integrated FET (32mΩ), precision current sense (±1%), and I2C configuration; lacks dv/dt pin and thermal latch. | Requires microcontroller interface for configuration; better suited for digitally managed systems than analog-only hot-swap. | Choose TPS25940L when programmability via I2C and ±1% current accuracy outweigh need for analog slew control and latch behavior. |
Compared with MP5014A and TPS25940L, MP5000SDQ-LF-Z offers simpler analog configuration (no MCU needed), built-in dv/dt control, and latched thermal shutdown - making it ideal for cost-sensitive, fixed-function 12V hot-swap where firmware integration is impractical.
Availability
MP5000SDQ-LF-Z is available at Aetrix Electronics and suitable for laptop docking stations, PC Card interfaces, and industrial USB-C PD sink protection requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP5000SDQ-LF-Z 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for power management, motion control, and automotive applications.
The MP5000S product line targets robust, low-component-count hot-swap protection for portable and embedded 12V systems - emphasizing analog configurability, thermal resilience, and fault-bus interoperability without digital overhead.
FAQ
What is the maximum continuous current rating for MP5000SDQ-LF-Z at 85°C ambient?
At +85°C ambient with standard PCB layout (0.5-inch² copper), MP5000SDQ-LF-Z supports ≤2.3A continuous current. This is derived from its 50°C/W θJA, 125°C max junction temperature, and thermal derating curve - exceeding this requires enhanced heatsinking or forced airflow.
Can the dv/dt pin be left unconnected without external capacitor?
Yes - the dv/dt pin is internally biased and floats by default, delivering a guaranteed 0.9ms output voltage ramp time. No external capacitor is required unless longer slew rates (e.g., 2–23ms) are needed for specific inrush suppression goals.
How does the Enable/Fault pin indicate thermal shutdown?
During thermal shutdown, the Enable/Fault pin drives to a mid-level voltage (0.82–1.95V), distinct from low (UVLO) or high-impedance (enabled) states. This level is detectable by comparator circuits or ADC inputs to trigger system-level thermal alerts without additional components.
What is the minimum current limit achievable with MP5000SDQ-LF-Z?
The minimum current limit is 1A, achieved with a 100Ω resistor between I-Limit and SOURCE pins. Per datasheet Table 2, 100Ω yields 2.3A trip and 1.1A hold current; lower values (e.g., 150Ω) are not characterized and may fall outside specification.
Is MP5000SDQ-LF-Z pin-compatible with MP5014A?
No - MP5014A uses a different pinout (QFN12) and relocates key functions including I-Limit and dv/dt. While functionally similar, it requires PCB redesign and layout revision; MP5014A is not a drop-in replacement for MP5000SDQ-LF-Z.
Does MP5000SDQ-LF-Z require an external pull-up on the Enable/Fault pin?
No - the Enable/Fault pin includes an internal 28μA current source that pulls it high when enabled. External pull-up resistors are unnecessary and may interfere with mid-level thermal fault detection or low-level UVLO signaling.
What happens during a short-circuit event at the SOURCE output?
Upon short, MP5000SDQ-LF-Z enters constant-current mode at the programmed hold current (e.g., 3.7A with 22Ω). If sustained, die temperature rises until thermal shutdown triggers at 175°C, latching the output off until UVLO reset or EN pin toggle - preventing self-destruction.
MP5000SDQ-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Package/Case:
- 10-VFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 10V ~ 18V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 5A
- Rds On (Typ):
- 40mOhm
- Input Type:
- Non-Inverting
- Features:
- Slew Rate Controlled, Status Flag
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, Over Voltage, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-QFN (3x3)
MP5000SDQ-LF-Z FAQ
1.How can I place an order for MP5000SDQ-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP5000SDQ-LF-Z 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 MP5000SDQ-LF-Z reliable?
The price and inventory of MP5000SDQ-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP5000SDQ-LF-Z is usually 5 days.
3.What payment methods are accepted for MP5000SDQ-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP5000SDQ-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP5000SDQ-LF-Z?
MP5000SDQ-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP5000SDQ-LF-Z 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 MP5000SDQ-LF-Z?
For technical support, including MP5000SDQ-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP5000SDQ-LF-Z requirements.
6.How does Aetrix verify that MP5000SDQ-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP5000SDQ-LF-Z 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 MP5000SDQ-LF-Z meets industry standards.
7.What is the process for return or replacement of MP5000SDQ-LF-Z?
All MP5000SDQ-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP5000SDQ-LF-Z, 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 MP5000SDQ-LF-Z part is unused and in its original packaging.
Return procedure for MP5000SDQ-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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