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onsemi FAN2013MPX
- Part No.:
- FAN2013MPX
- Manufacturer:
- onsemi
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
FAN2013MPX.pdf
- Description:
- IC REG BUCK ADJ 2A 6MLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,665
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Product details
Overview
FAN2013MPX from Fairchild Semiconductor is a 2A synchronous PWM buck regulator with current-mode control, operating from 4.5V–5.5V input and delivering adjustable output (0.8V to VIN−1V) in a 3×3 mm MLP package. It features 1.3 MHz fixed-frequency switching, 95% peak efficiency, power-good flag, and integrated over-voltage, thermal, and short-circuit protection - deployed in notebook computers and hard disk drives.
For engineers reviewing the FAN2013MPX datasheet, pinout, applications, or equivalent options, key selection criteria include its 2A continuous output capability, 1.3 MHz switching frequency for compact magnetics, 0.8V reference accuracy, 100% duty-cycle LDO mode, and 6-lead MLP thermal performance.
Technical Context
The FAN2013MPX implements a current-mode PWM architecture with internal slope compensation and a 1.3 MHz oscillator, enabling fast load transient response and stable regulation across line and load variations. Its dual-MOSFET synchronous topology eliminates external diode losses and supports 100% duty cycle operation near VIN = VOUT.
Control logic includes digital soft-start (four-step current ramp), UVLO with 3.7V threshold and 150 mV hysteresis, and open-drain PG flag with 100 µs delay and ±2% threshold accuracy. Protection circuitry integrates cycle-by-cycle current limiting (3.5 A typical), over-temperature shutdown (150°C trip, 130°C restart), and output over-voltage clamp (7% OV threshold).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 5.5 V - Enables direct use with 5 V rail or regulated intermediate bus without pre-regulation. |
| Output Current | 2.0 A continuous - Supports core voltage rails for HDD controllers and SoC I/O domains. |
| Switching Frequency | 1.3 MHz (±230 kHz) - Allows use of small 2.2 µH inductors and low-ESR ceramic capacitors. |
| Reference Voltage | 0.8 V ±2% (−40°C to +85°C) - Sets output accuracy for 1.2 V, 1.5 V, or 1.8 V supplies via resistor divider. |
| Efficiency | 95% peak - Minimizes thermal load in space-constrained notebook and STB PCB layouts. |
| Thermal Resistance | θJC = 8 °C/W - Enables high-power density design when thermally anchored to PCB copper plane. |
| PG Delay | 100 µs - Provides deterministic power sequencing timing for downstream logic and memory. |
Pinout & Package
Package: 3×3 mm, 6-lead Molded Leadless Package (MLP), lead-free per JEDEC J-STD-020B, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1 (AGND) | Analog Ground | Reference ground for feedback and error amplifier; must be soldered directly to PCB ground plane. |
| 1 (FB) | Feedback Input | Connects to resistor divider to set output voltage; senses 0.8 V reference for regulation. |
| 2 (PGND) | Power Ground | Return path for internal MOSFET switches; externally tied to AGND at single-point star ground. |
| 3 (SW) | Switching Node | Drives external inductor; carries high dv/dt and peak currents - requires tight layout routing. |
| 4 (PVIN) | Power Input | Supplies internal high-side PMOS switch; decoupled separately from VIN for noise isolation. |
| 5 (VIN) | Supply Input | Provides bias for control circuitry and low-side NMOS gate drive; accepts 4.5–5.5 V. |
| 6 (PG) | Power-Good Flag | Open-drain output asserting high when VOUT is within ±3% of target; sinks 6 mA max. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Buck Topology | Eliminates external Schottky diode, reducing conduction loss and improving efficiency above 1 A. |
| 100% Duty-Cycle LDO Mode | Maintains regulation down to VOUT = VIN − (IOUT × RDS_ON_PMOS), critical for low-dropout point-of-load conversion. |
| Digital Soft-Start | Four-step current ramp limits inrush; achieves full 2 A output in ~800 µs with 40 µF COUT. |
| Current-Mode Control | Enables inherent cycle-by-cycle current limiting and superior load transient response (<5% VOUT deviation). |
| Integrated Protections | UVLO, OVP (7%), thermal shutdown (150°C), and short-circuit foldback prevent system-level fault propagation. |
Applications
| Hard Disk Drive Power | Notebook Core Rail |
|---|---|
Use Scenario: Supplies 1.2 V/1.5 V to HDD controller ASIC and spindle motor driver ICs under dynamic load conditions. IC Role / Device Role / Timing Role: Primary DC-DC converter regulating low-voltage logic supply with fast transient response to burst data transfers. Use Value: 95% efficiency reduces thermal stress on sealed HDD enclosure; PG signal enables firmware-controlled spin-up sequencing. | Use Scenario: Powers CPU I/O or GPU memory interface in ultrathin notebooks where board space and thermal headroom are constrained. IC Role / Device Role / Timing Role: Point-of-load regulator delivering 2 A at 1.05 V with 1.3 MHz switching to minimize filter component footprint. Use Value: 3×3 mm MLP package fits beneath heat spreaders; 100% duty cycle sustains output during battery droop to 4.5 V. |
| Set-Top Box SoC Supply | Communications Baseband |
Use Scenario: Generates 1.8 V for MPEG decoder and video processing SoC in cable/satellite STBs with standby-to-active transitions. IC Role / Device Role / Timing Role: Main processor core supply with soft-start and PG coordination for clean boot sequence. Use Value: Digital soft-start prevents input rail collapse during cold start; ±2% VOUT accuracy ensures SoC timing margin compliance. | Use Scenario: Powers baseband processor and RF transceiver analog blocks in wireless access points requiring low-noise, stable 1.2 V. IC Role / Device Role / Timing Role: Low-noise synchronous buck regulator with minimized EMI via fixed 1.3 MHz frequency and optimized layout. Use Value: Current-mode control suppresses noise coupling into sensitive RF sections; PG flag synchronizes modem initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54202DRCT | 4.5–17 V input range; 2 A output; 500 kHz–2.2 MHz adjustable frequency; no 100% duty cycle mode. | Wider input range suits 12 V intermediate bus; lower switching frequency increases inductor size but eases EMI filtering. | Select when input exceeds 5.5 V or programmable frequency is required; verify loop stability with external compensation. |
| RT8059GJ6 | 2.7–5.5 V input; 2 A output; 1.5 MHz fixed frequency; 0.6 V reference; no PG flag or digital soft-start. | Lacks power-good signaling and advanced soft-start - unsuitable for sequenced multi-rail systems. | Choose for cost-sensitive, single-rail 3.3 V or 2.5 V applications where PG and precise startup control are unnecessary. |
Compared with TPS54202DRCT and RT8059GJ6, the FAN2013MPX uniquely combines 5 V input optimization, 100% duty-cycle LDO mode, and integrated PG flag - making it preferred for tightly regulated 5 V-based notebook and storage subsystems requiring deterministic power sequencing and minimal dropout.
Availability
FAN2013MPX is available at Aetrix Electronics and suitable for notebook computers, hard disk drives, set-top boxes, and communications equipment requiring stable component supply and long-term industrial availability.
Supply support for FAN2013MPX 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
Fairchild Semiconductor was a U.S.-based designer of high-performance analog and power ICs, acquired by ON Semiconductor in 2016; its legacy power management portfolio remains widely deployed in computing and consumer electronics.
The FAN2013MPX belongs to Fairchild's low-voltage synchronous buck regulator family, engineered specifically for 5 V-input point-of-load conversion in space- and thermally-constrained portable and storage systems.
FAQ
What is the minimum output voltage supported by the FAN2013MPX?
The FAN2013MPX supports an adjustable output voltage range from 0.8 V to VIN−1 V. Its internal 0.8 V reference sets the lowest possible regulated output; using a resistor divider on the FB pin allows precise setting of any value ≥0.8 V, such as 1.05 V or 1.2 V, with ±2% accuracy over temperature and load.
Does the FAN2013MPX require external compensation components?
No, the FAN2013MPX uses internal compensation and requires no external RC network. Its current-mode control architecture with built-in slope compensation provides stable operation with standard 2.2 µH inductors and 40–60 µF output capacitance, simplifying design and reducing BOM count.
How does the FAN2013MPX handle input voltage drop near the output level?
The FAN2013MPX enters 100% duty-cycle LDO mode when VIN approaches VOUT, maintaining regulation by turning the P-channel MOSFET fully on. In this mode, VOUT = VIN − (IOUT × RDS_ON_PMOS), with RDS_ON_PMOS ≈ 90 mΩ - enabling functional operation even at VIN = 4.5 V for a 1.2 V output.
What is the purpose of separate VIN and PVIN pins on the FAN2013MPX?
VIN powers the control circuitry and low-side gate driver, while PVIN supplies only the high-side PMOS switch. This separation reduces noise coupling from switching transients into sensitive analog blocks, improving regulation accuracy and EMI performance - especially critical in noise-sensitive applications like communications equipment.
Can the FAN2013MPX be used without the power-good (PG) signal?
Yes, the PG pin is optional and can be left unconnected if power sequencing is not required. However, omitting PG forfeits system-level fault detection and startup coordination; for reliable operation in notebook or HDD applications, tying PG to a microcontroller interrupt or enable input is strongly recommended to validate FAN2013MPX output stability before downstream logic activation.
FAN2013MPX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 4.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 1.3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-MLP (3x3)
FAN2013MPX FAQ
1.How can I place an order for FAN2013MPX through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN2013MPX 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 FAN2013MPX reliable?
The price and inventory of FAN2013MPX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN2013MPX is usually 5 days.
3.What payment methods are accepted for FAN2013MPX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN2013MPX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN2013MPX?
FAN2013MPX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN2013MPX 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 FAN2013MPX?
For technical support, including FAN2013MPX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN2013MPX requirements.
6.How does Aetrix verify that FAN2013MPX is sourced from the original manufacturer or authorized distributors?
All FAN2013MPX 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 FAN2013MPX meets industry standards.
7.What is the process for return or replacement of FAN2013MPX?
All FAN2013MPX units undergo pre-shipment inspection (PSI). If there is an issue with FAN2013MPX, 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 FAN2013MPX part is unused and in its original packaging.
Return procedure for FAN2013MPX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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