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Monolithic Power Systems Inc. MP9486GN-Z
- Part No.:
- MP9486GN-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MP9486GN-Z.pdf
- Description:
- IC REG BUCK 5V 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,878
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Product details
Overview
MP9486GN-Z from Monolithic Power Systems is a 100V-input, 1A synchronous step-down converter with integrated 500mΩ high-side MOSFET, hysteretic voltage-mode control, and 170µA quiescent current. It delivers regulated 5V output in automotive power supplies, solar energy systems, and high-power LED drivers using a SOIC-8 EP package with exposed thermal pad.
For engineers reviewing the MP9486GN-Z datasheet, MP9486GN-Z pinout, MP9486GN-Z application, or MP9486GN-Z equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, and confirmed alternative options for 4.5–100V industrial buck conversion with PWM dimming support.
Technical Context
The MP9486GN-Z employs hysteretic voltage-mode control with adaptive 185mV/215mV feedback thresholds to achieve fast transient response without external compensation. Its internal high-side MOSFET features 2.5A current limit and 500mΩ RDS(ON), enabling continuous 1A output at up to 1MHz switching frequency.
It integrates dedicated EN and DIM inputs with precise thresholds (EN rising: 1.55V, DIM rising: 1.15V), thermal shutdown at 150°C, short-circuit protection with 10µs fault detection, and bootstrap charging circuitry supporting external BST diode enhancement for high-duty-cycle operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 100V - supports direct connection to unregulated 24V/48V/72V industrial rails and automotive battery transients. |
| Output Current | 1A continuous - sufficient for powering microcontrollers, sensors, and gate drivers in embedded systems. |
| Quiescent Current | 170µA - enables >1-year battery life in always-on vehicle telematics or remote monitoring nodes. |
| Switching Frequency | Up to 1MHz - allows use of compact 33µH inductors and reduces EMI filter size in space-constrained designs. |
| Feedback Threshold | 185mV to 215mV hysteretic window - eliminates need for loop compensation components while maintaining ±2% output regulation. |
| Thermal Shutdown | 150°C trigger with 20°C hysteresis - ensures safe recovery after overload without requiring external thermal management circuitry. |
| Short-Circuit Protection | 10µs fault detection + 300µs auto-retry - sustains repeated short events without latch-off, critical for LED string fault tolerance. |
Pinout & Package
MP9486GN-Z is housed in a SOIC-8 EP (exposed pad) package measuring 5.0mm × 6.2mm × 1.7mm, with thermal vias recommended under the exposed pad for θJA = 34°C/W on 2-layer PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback input | Connects to resistor divider tap; regulates output by holding average voltage at 200mV via 185–215mV hysteretic window. |
| 2 NC | No connection | Unbonded pin; must remain floating-no routing or copper fill allowed. |
| 3 VIN | Main power input | Accepts 4.5–100V; requires low-ESR ceramic capacitor placed within 3mm for stable high-frequency switching. |
| 4 BST | Bootstrap supply | Drives high-side MOSFET gate; requires 0.1µF ceramic capacitor between BST and SW for proper floating bias generation. |
| 5 SW | Switch node | High dv/dt node connecting to inductor and Schottky catch diode; must be routed short and wide to minimize EMI. |
| 6 DIM | PWM dimming control | Enables LED brightness control with 1.15V rising threshold; compatible with 20kHz PWM signals when used as LED driver. |
| 7 EN | Enable input | Positive logic enable with 1.55V rising threshold; internal 2µA pull-up allows floating-to-enable operation. |
| 8 GND | Power ground | Primary return path; exposed pad must be soldered to solid GND plane with ≥6 thermal vias (15mil barrel, 40mil pitch). |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic control architecture | Eliminates external compensation network-reduces BOM count by 3–5 passive components versus voltage-mode controllers. |
| Integrated high-side MOSFET | 500mΩ RDS(ON) at VBST–VSW = 5V enables 1A output without external switch, simplifying layout and reducing footprint. |
| PWM dimming interface | DIM pin with 300mV hysteresis supports direct connection to MCU GPIO for LED current control without added logic circuitry. |
| Low quiescent current | 170µA at no load allows use in battery-backed applications where standby power budget is ≤200µA. |
| Robust protection suite | Combines thermal shutdown, short-circuit protection, UVLO (4.0V rising), and BST UVLO (2.2V) for fault-tolerant field operation. |
Applications
| Automotive System Power | Solar Energy Systems |
|---|---|
|
Use Scenario: Powering infotainment head units and ADAS camera modules from 12V/24V battery with load dump immunity. IC Role / Device Role / Timing Role: Primary DC-DC regulator converting raw battery voltage to stable 5V/3.3V rail with fast line transient response. Use Value: 100V absolute max input withstands ISO 7637-2 pulse 5a (12V systems) and pulse 5b (24V systems) without external TVS. |
Use Scenario: Converting variable PV array output (40–90V) to fixed 5V for charge controller microcontrollers and sensing circuits. IC Role / Device Role / Timing Role: Input-stage buck converter providing isolated, regulated auxiliary power independent of MPPT stage. Use Value: Wide 4.5–100V input range accommodates full PV open-circuit voltage swing across temperature and irradiance conditions. |
| High-Power LED Drivers | Industrial Power Supplies |
|
Use Scenario: Driving 1A LED strings in street lighting fixtures with analog/PWM dimming capability. IC Role / Device Role / Timing Role: Constant-current LED driver using FB pin as current sense node with DIM-controlled duty cycle. Use Value: 170µA quiescent current and 20kHz DIM compatibility enable smooth, flicker-free dimming down to 0.1% brightness. |
Use Scenario: Providing 5V/1A auxiliary power in PLC I/O modules operating from 48V DC distribution bus. IC Role / Device Role / Timing Role: Secondary regulator delivering clean, isolated logic supply in harsh industrial environments. Use Value: SOIC-8 EP package with exposed pad achieves 3.6W power dissipation at +25°C ambient-enabling convection-only cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5–65V input, 1A, current-mode control, 100µA IQ, requires external MOSFET and compensation network. | Lacks integrated high-side FET and PWM dimming; better suited for cost-sensitive automotive apps needing AEC-Q100 Grade 1. | Select when AEC-Q100 qualification is mandatory and board space allows external FET + compensation components. |
| MAX20006AATP/V+T | 3.5–65V input, 1.2A, spread-spectrum frequency modulation, 28µA IQ, integrated FET, but no DIM pin. | Optimized for ultra-low EMI in infotainment; lacks LED-specific dimming interface and 100V rating. | Choose for EMI-critical automotive cabin applications where 65V max input suffices and dimming is not required. |
Compared with LM5164QPWPRQ1 and MAX20006AATP/V+T, MP9486GN-Z uniquely combines 100V input capability, integrated FET, and dedicated DIM pin-making it the only option among the three that supports both high-voltage industrial input and native LED dimming without added circuitry.
Availability
MP9486GN-Z is available at Aetrix Electronics and suitable for automotive system power, solar energy systems, high-power LED drivers, and industrial power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MP9486GN-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 power ICs, headquartered in Kirkland, Washington, with global design and support centers.
The MP9486 belongs to MPS's high-voltage DC-DC converter product line, designed specifically for ruggedized industrial, automotive, and renewable energy applications demanding wide input range, integrated power stages, and robust fault protection.
FAQ
What is the maximum allowable input voltage for MP9486GN-Z in continuous operation?
The MP9486GN-Z supports continuous operation up to 95V input per Recommended Operating Conditions, with Absolute Maximum Rating of +100V on VIN. Exceeding 95V may trigger UVLO shutdown or reduce reliability; sustained 100V operation is only permissible for transient events like load dump.
Can MP9486GN-Z be used without an external bootstrap diode?
Yes-MP9486GN-Z includes an internal bootstrap regulator that charges the BST capacitor from VIN. An external diode (e.g., BAT54) is optional and recommended only for high-duty-cycle (>65%) or high-frequency (>800kHz) applications to improve efficiency and gate drive stability.
How does the DIM pin function in non-LED applications?
In standard buck configurations, the DIM pin can be tied directly to EN to provide synchronized enable/disable control. When left floating or pulled high, DIM has no effect on regulation; the IC operates normally as long as EN is asserted above 1.55V.
What is the thermal performance of MP9486GN-Z on a 2-layer PCB?
On the EV9486-N-00A 2-layer 63mm×63mm board, MP9486GN-Z achieves θJA = 34°C/W. With the exposed pad fully soldered to a 1-in² GND copper area and ≥6 thermal vias, junction temperature rise is ~34°C at 1A/5V output under +25°C ambient.
Does MP9486GN-Z require output capacitance with specific ESR?
Yes-the MP9486GN-Z relies on output capacitor ESR to shape hysteretic loop dynamics. For 5V output, recommended ESR is 100–250mΩ. Tantalum or aluminum electrolytic capacitors with parallel 0.1µF ceramic are preferred over low-ESR polymer types alone.
Is the FB pin internally biased, and what happens if left unconnected?
No-the FB pin has no internal bias and must be connected to a resistor divider from VOUT to GND. Leaving FB floating causes unregulated high output voltage and potential damage to downstream circuitry due to uncontrolled switching.
What failure modes does the short-circuit protection cover?
The MP9486GN-Z SCP detects output shorts via FB voltage collapse (<185mV for >10µs) and also monitors peak switch current (2.5A typical limit). Both mechanisms trigger immediate shutdown and 300µs retry cycles-protecting against sustained shorts and inductor saturation faults.
MP9486GN-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 95V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- Up ~ 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
MP9486GN-Z FAQ
1.How can I place an order for MP9486GN-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP9486GN-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 MP9486GN-Z reliable?
The price and inventory of MP9486GN-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP9486GN-Z is usually 5 days.
3.What payment methods are accepted for MP9486GN-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP9486GN-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP9486GN-Z?
MP9486GN-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP9486GN-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 MP9486GN-Z?
For technical support, including MP9486GN-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP9486GN-Z requirements.
6.How does Aetrix verify that MP9486GN-Z is sourced from the original manufacturer or authorized distributors?
All MP9486GN-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 MP9486GN-Z meets industry standards.
7.What is the process for return or replacement of MP9486GN-Z?
All MP9486GN-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP9486GN-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 MP9486GN-Z part is unused and in its original packaging.
Return procedure for MP9486GN-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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