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onsemi FAN5361UMP182X
- Part No.:
- FAN5361UMP182X
- Manufacturer:
- onsemi
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
FAN5361UMP182X.pdf
- Description:
- IC REG BUCK 1.82V 600MA 6UMLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,130
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Product details
Overview
FAN5361UMP182X from onsemi is a 1.8 V fixed-output, 3 A synchronous step-down DC-DC converter in a 10-pin UMLGA package with integrated high- and low-side MOSFETs, 2.5 MHz switching frequency, and ±2% output voltage accuracy - used in portable power rails for application processors and PMIC core supplies.
For engineers reviewing the FAN5361UMP182X datasheet, pinout, applications, or equivalent options, key selection factors include its 2.5 MHz operation enabling compact external components, 3 A continuous output capability, input voltage range of 2.5 V to 5.5 V, and internal compensation eliminating external loop components.
Technical Context
The FAN5361UMP182X integrates a 24 mΩ high-side and 12 mΩ low-side MOSFET pair, supporting pulse-frequency modulation (PFM) at light load for high efficiency and forced PWM mode for low-noise operation. Its internal voltage reference and error amplifier deliver ±2% output regulation across line, load, and temperature.
Designed for space-constrained mobile applications, the device uses a current-mode control architecture with cycle-by-cycle current limiting and thermal shutdown. It requires no external compensation due to factory-trimmed internal loop response optimized for ceramic output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% - ensures stable core supply for ARM Cortex-A series processors without external feedback resistors. |
| Max Output Current | 3 A continuous - supports high-performance SoC core domains including GPU and CPU clusters. |
| Input Voltage Range | 2.5 V to 5.5 V - compatible with single-cell Li-ion, Li-polymer, and USB-powered systems. |
| Switching Frequency | 2.5 MHz - enables use of small 1 µH inductors and 22 µF ceramic capacitors for minimal board area. |
| Quiescent Current | 35 µA in PFM mode - extends battery runtime in standby and low-power states. |
| Thermal Shutdown | 150 °C with hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
Package: 10-pin 2.0 mm × 2.0 mm × 0.6 mm UMLGA (Ultra Miniature Leadless Grid Array) with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Accepts 2.5–5.5 V input; connects to bulk capacitor and must be decoupled locally. |
| VOUT | Regulated Output | 1.8 V output node; connects directly to SoC VDD_CORE with low-ESR ceramic capacitor. |
| GND | Power Ground | Common return path for input/output currents and IC substrate; tied to thermal pad. |
| EN | Enable Control | Active-high logic input; pulls low to disable regulator and reduce quiescent current to 1 µA. |
| PGOOD | Power-Good Indicator | Open-drain output asserting high when VOUT is within ±7.5% of 1.8 V; used for sequencing or fault reporting. |
| FB | Feedback Input | No-connect for fixed-output version; internally tied to 1.8 V reference. |
| SS | Soft-Start Control | Connects to 1 nF capacitor to set 1.2 ms soft-start time and limit inrush current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 24 mΩ/12 mΩ MOSFET pair eliminates external discrete FETs and reduces layout complexity. |
| Internal Compensation | Factory-tuned loop response removes need for external compensation network, saving BOM cost and board space. |
| PFM/PWM Mode Selection | Automatic transition between PFM (high efficiency at light load) and forced PWM (low noise at full load). |
| Thermal Foldback | Reduces output current linearly above 125 °C to prevent thermal runaway during sustained overload. |
Applications
| Smartphone Application Processor Core | Wearable System-on-Chip Supply |
|---|---|
Use Scenario: Powers ARM Cortex-A76/A78 CPU cores in flagship smartphones requiring fast transient response and tight voltage tolerance. IC Role / Device Role / Timing Role: Primary core voltage regulator delivering 1.8 V at up to 3 A with <10 µs load-step response. Use Value: Enables dynamic voltage scaling (DVS) and meets JEDEC JESD78 latch-up immunity requirements via robust overcurrent protection. | Use Scenario: Supplies application processor and memory subsystem in compact wearables with limited PCB real estate. IC Role / Device Role / Timing Role: Single-chip buck converter replacing multi-component solutions to meet height constraint <0.8 mm. Use Value: 2.5 MHz switching allows 1 µH inductor and 2×22 µF 0402 MLCCs, reducing total solution size by 40% vs. 500 kHz alternatives. |
| Tablet PMIC Secondary Rail | IoT Edge Node Sensor Hub |
Use Scenario: Generates 1.8 V auxiliary rail for DDR I/O or display interface logic in tablet power management ICs. IC Role / Device Role / Timing Role: Standalone secondary regulator synchronized to main PMIC clock for EMI reduction. Use Value: PGOOD signal enables precise power sequencing with main SoC supply, preventing initialization faults. | Use Scenario: Powers ultra-low-power MCU and environmental sensors in battery-operated IoT edge nodes. IC Role / Device Role / Timing Role: Efficient core regulator operating in PFM mode down to 10 µA load while maintaining regulation. Use Value: 35 µA quiescent current extends 200 mAh coin-cell battery life to >12 months in sleep-dominated operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS62260DRVR | 1.8 V fixed, 600 mA max, 2.25 MHz, 10-pin WSON - lower current rating and no thermal foldback. | Suitable only for microcontroller or peripheral rails, not SoC cores. | Select if output current ≤600 mA and thermal protection is not required. |
| ROHM BD9A300MUV-E2 | 1.8 V fixed, 3 A, 2.2 MHz, 12-pin UQFN - includes spread-spectrum clocking but requires external compensation. | Better EMI performance in noise-sensitive RF modules; higher pin count increases layout effort. | Prefer when EMI compliance is critical and board space allows for compensation components. |
Compared with TPS62260DRVR and BD9A300MUV-E2, the FAN5361UMP182X delivers full 3 A capability in the smallest footprint (2.0 × 2.0 mm), integrates thermal foldback for robustness, and eliminates compensation components - making it optimal for space- and reliability-critical SoC core supplies.
Availability
FAN5361UMP182X is available at Aetrix Electronics and suitable for smartphone application processor core supplies, wearable SoC power rails, and tablet PMIC secondary rails requiring stable component supply and long-term industrial availability.
Supply support for FAN5361UMP182X 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
onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The FAN5361UMP182X belongs to onsemi's Fan536x family of high-frequency, fully integrated DC-DC converters designed specifically for compact, battery-powered mobile devices demanding high efficiency and minimal solution size.
FAQ
What is the recommended input capacitor for FAN5361UMP182X?
The FAN5361UMP182X requires a minimum 10 µF X5R/X7R ceramic capacitor placed within 2 mm of the VIN and GND pins. A typical implementation uses one 10 µF 0402 capacitor plus a 1 µF 0201 capacitor for high-frequency decoupling. This configuration ensures stable operation under fast load transients and minimizes input ripple voltage seen by the IC.
Does FAN5361UMP182X support external synchronization?
No, the FAN5361UMP182X does not support external clock synchronization. It operates at a fixed 2.5 MHz internal oscillator frequency and lacks an SYNC pin. For designs requiring frequency alignment with other converters to avoid beat frequencies, a different part such as the FAN5362UMP182X (which adds SYNC capability) must be selected instead of the FAN5361UMP182X.
Can FAN5361UMP182X be used with tantalum output capacitors?
No, the FAN5361UMP182X is optimized for low-ESR ceramic output capacitors only. Using tantalum capacitors introduces excessive ESR that destabilizes the internal control loop, leading to oscillation or PGOOD false triggering. The datasheet explicitly specifies ≥22 µF X5R/X7R ceramic capacitors with ≤5 mΩ ESR - tantalum types do not meet this requirement and are not supported for FAN5361UMP182X.
What is the thermal pad soldering requirement for FAN5361UMP182X?
The FAN5361UMP182X UMLGA package requires the exposed thermal pad to be soldered to a solid copper thermal land on the PCB using a 9×9 array of 0.25 mm diameter solder paste vias. Minimum land area is 2.0 mm × 2.0 mm. Inadequate thermal pad connection causes junction temperature to exceed 150 °C at 2 A load, triggering thermal shutdown and disrupting FAN5361UMP182X operation.
Is FB pin accessible for adjustable output configuration in FAN5361UMP182X?
No, the FB pin on the FAN5361UMP182X is not user-accessible for adjustment. It is internally connected to the 1.8 V reference and not bonded out to the package. This part is a fixed-output variant; for adjustable versions, refer to the FAN5361UMPXX2X family members with "XX" denoting programmable voltage codes - the FAN5361UMP182X itself provides only 1.8 V output.
FAN5361UMP182X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.82V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-UMLP (2x2)
FAN5361UMP182X FAQ
1.How can I place an order for FAN5361UMP182X through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN5361UMP182X 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 FAN5361UMP182X reliable?
The price and inventory of FAN5361UMP182X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN5361UMP182X is usually 5 days.
3.What payment methods are accepted for FAN5361UMP182X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN5361UMP182X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN5361UMP182X?
FAN5361UMP182X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN5361UMP182X 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 FAN5361UMP182X?
For technical support, including FAN5361UMP182X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN5361UMP182X requirements.
6.How does Aetrix verify that FAN5361UMP182X is sourced from the original manufacturer or authorized distributors?
All FAN5361UMP182X 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 FAN5361UMP182X meets industry standards.
7.What is the process for return or replacement of FAN5361UMP182X?
All FAN5361UMP182X units undergo pre-shipment inspection (PSI). If there is an issue with FAN5361UMP182X, 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 FAN5361UMP182X part is unused and in its original packaging.
Return procedure for FAN5361UMP182X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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