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Texas Instruments LM2852XMXA-3.0
- Part No.:
- LM2852XMXA-3.0
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2852XMXA-3.0.pdf
- Description:
- IC REG BUCK 3V 2A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,533
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Product details
Overview
LM2852XMXA-3.0 from Texas Instruments is a 2A synchronous buck regulator with fixed 3.0V output, 1.5MHz switching frequency, 2.85V–5.5V input range, internal 60mΩ MOSFETs, and voltage-mode control in HTSSOP-14 package. It delivers stable point-of-load power for FPGA core rails and portable computing systems.
For engineers reviewing the LM2852XMXA-3.0 datasheet, LM2852XMXA-3.0 pinout, LM2852XMXA-3.0 application, or LM2852XMXA-3.0 equivalent, key selection criteria include factory-programmed 3.0V output tolerance (±2.25%), thermal shutdown at 165°C, soft-start capacitor interface (1–50nF), and compatibility with ceramic output capacitors down to 10µF for high-frequency operation.
Technical Context
The LM2852XMXA-3.0 implements voltage-mode PWM control with integrated type-three compensation, eliminating external compensation components. Its 1.5MHz oscillator enables compact filter design using low-inductance (1–10µH) and low-ESR ceramic output capacitors.
It features dual internal MOSFETs (75mΩ PFET / 55mΩ NFET), programmable soft-start via external capacitor on SS pin, and independent AVIN (logic bias) and PVIN (power FET supply) inputs for split-rail operation-supporting optimized efficiency across 3.3V and 5V input domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2.25% (ensured over –40°C to +125°C junction temperature) |
| Max Output Current | 2A continuous load capability with thermal shutdown protection at 165°C |
| Switching Frequency | 1.5MHz nominal (1050–1825kHz range), enabling small LC filter size |
| Input Voltage Range | 2.85V to 5.5V on AVIN; PVIN supports same or lower voltage for split-rail flexibility |
| Quiescent Current | 2mA typical operating current; 10µA shutdown current for battery-sensitive designs |
| Internal MOSFET RDS(on) | 75mΩ (PFET) / 55mΩ (NFET) at ISW = 2A, minimizing conduction loss |
| Soft-Start Range | 1nF–50nF external capacitor on SS pin, enabling controlled startup and fault recovery |
Pinout & Package
LM2852XMXA-3.0 is housed in a thermally enhanced 14-pin HTSSOP package (PWP0014A) with exposed die attach pad soldered to PCB ground for optimal thermal dissipation (θJA = 38°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN (1) | Chip bias supply | Provides power to internal logic; must be ≥ PVIN and within 2.85–5.5V |
| EN (2) | Enable control | Internally pulled up; tie to GND to disable; floating or AVIN enables operation |
| SGND (3) | Signal ground reference | Reference for error amplifier and control circuitry; separate from PGND |
| SS (4) | Soft-start timing node | Connects to external capacitor (1–50nF) to control output ramp rate and fault recovery |
| NC (5,12,13) | No-connect | Must be left floating or tied to GND; no internal connection |
| PVIN (6,7) | Main power input | Supplies internal PFET; accepts 1.5–5.5V; connects to bulk input capacitor |
| SW (8,9) | Power switch node | Drives external inductor; high dv/dt node requiring short, wide trace layout |
| PGND (10,11) | Power ground return | High-current return path for PFET/NFET; connect to large copper plane |
| SNS (14) | Output voltage sense | Feedback input for regulation; connect directly to load for accurate remote sensing |
| Exposed Pad | Thermal & electrical ground | Mandatory connection to PCB ground plane for thermal performance and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 3.0V output | Eliminates external feedback resistors; ±2.25% tolerance over full temperature range |
| Integrated type-three compensation | Reduces external component count; ensures stability with recommended 1–10µH inductors and 10–100µF ceramic capacitors |
| 1.5MHz switching frequency | Enables use of sub-10µH inductors and low-ESR ceramic capacitors, shrinking solution footprint by >40% vs 500kHz variants |
| Split-rail AVIN/PVIN architecture | Allows independent optimization of logic bias (e.g., 3.3V) and power rail (e.g., 5V), improving efficiency in mixed-voltage systems |
| Low 10µA shutdown current | Extends battery life in portable applications; achieved without external enable sequencing circuitry |
Applications
| FPGA Core Power Supply | Portable Computing DC-DC Conversion |
|---|---|
Use Scenario: Providing regulated 3.0V core voltage to Xilinx Spartan-7 or Intel MAX 10 FPGA I/O banks during active configuration and operation. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering up to 2A with fast transient response to handle FPGA I/O switching currents. Use Value: Factory-set 3.0V eliminates resistor divider errors; 1.5MHz operation allows <10µH inductor, reducing board area by 35% versus 500kHz solutions. | Use Scenario: Converting 5V USB-C PD input to 3.0V for SSD controller and PMIC subsystem in ultra-thin laptops. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator supporting dynamic load steps from 10mA to 2A during NVMe burst reads. Use Value: 75mΩ/55mΩ MOSFETs achieve >92% peak efficiency at 1A/5V→3V; soft-start prevents inrush into downstream capacitance. |
| Broadband Router PHY Power | Industrial Sensor Node Regulation |
Use Scenario: Supplying clean 3.0V to Ethernet PHY ICs (e.g., DP83867IR) in enterprise-grade 10GBase-T routers with strict EMI limits. IC Role / Device Role / Timing Role: Low-noise buck converter with controlled SW node slew rate and exposed-pad thermal management. Use Value: 1.5MHz switching moves noise spectrum above sensitive 1–10MHz analog bands; HTSSOP thermal pad maintains <95°C junction under full load. | Use Scenario: Powering 3.0V rail for ARM Cortex-M4-based sensor fusion modules in battery-operated IIoT edge nodes. IC Role / Device Role / Timing Role: Ultra-low-quiescent buck regulator enabling multi-year operation on coin-cell batteries. Use Value: 10µA shutdown current extends shelf life; SNS pin enables precise remote sensing across long PCB traces to sensor ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2852YMXA-3.0 | 500kHz switching frequency; requires larger 10–22µH inductor and higher-capacitance output filter (≥100µF) | Better suited for cost-sensitive, space-tolerant designs where EMI filtering below 1MHz is prioritized | Select when board area is less constrained and lower switching losses at light load are critical |
| TPS62864130RTER | 3.0V fixed output, 2.5A rating, 4MHz operation, integrated inductor option available | Targeted at ultra-compact, high-density applications where module-level integration reduces layout risk | Choose when system-level miniaturization outweighs discrete BOM cost and thermal design flexibility |
Compared with LM2852YMXA-3.0 and TPS62864130RTER, the LM2852XMXA-3.0 offers optimal balance of 2A capability, 1.5MHz efficiency, and discrete design control-enabling smaller magnetics than 500kHz parts while avoiding module-level thermal limitations of integrated inductor solutions.
Availability
LM2852XMXA-3.0 is available at Aetrix Electronics and suitable for FPGA core power, portable computing DC-DC conversion, broadband router PHY power, industrial sensor node regulation, and embedded microcontroller auxiliary rail applications requiring stable component supply and RoHS-compliant packaging.
Supply support for LM2852XMXA-3.0 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in high-reliability power conversion.
The LM2852 product line delivers SIMPLE SWITCHER® synchronous buck regulators targeting space-constrained, high-efficiency point-of-load applications in computing, communications, and industrial systems-designed for minimal external component count and robust thermal performance.
FAQ
What is the guaranteed output voltage tolerance for LM2852XMXA-3.0 across temperature?
The LM2852XMXA-3.0 guarantees ±2.25% output voltage tolerance over the full operating junction temperature range of –40°C to +125°C, as specified in the Electrical Characteristics table for the 3.0V option (2.9325V to 3.0675V). This tolerance is factory-trimmed and does not require external feedback components.
Can LM2852XMXA-3.0 operate with different voltages on AVIN and PVIN pins?
Yes, LM2852XMXA-3.0 supports split-rail operation: AVIN powers the control logic (2.85–5.5V), while PVIN supplies the power FETs (1.5–5.5V). PVIN must be ≤ AVIN. This allows optimizing efficiency-for example, using 3.3V AVIN for logic and 5V PVIN for higher-power conversion.
What is the minimum soft-start capacitor value supported by LM2852XMXA-3.0?
The LM2852XMXA-3.0 specifies a minimum soft-start capacitor value of 1nF on the SS pin, as defined in the Absolute Maximum Ratings and Applications Information sections. Values below 1nF may cause uncontrolled startup or current-limit activation during turn-on.
Does LM2852XMXA-3.0 require external compensation components?
No, LM2852XMXA-3.0 integrates a complete type-three compensation network internally. No external compensation components are required-stability is ensured when using inductors (1–10µH) and ceramic output capacitors (10–100µF) within the ranges specified in Table 1 of the datasheet.
What thermal protection features are implemented in LM2852XMXA-3.0?
LM2852XMXA-3.0 includes thermal shutdown activation at TJ = 165°C with 10°C hysteresis (TSD-HYS), ensuring safe operation under overload or poor heatsinking conditions. The exposed pad in the HTSSOP-14 package must be soldered to a PCB ground plane to achieve the rated θJA of 38°C/W.
LM2852XMXA-3.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.85V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
LM2852XMXA-3.0 FAQ
1.How can I place an order for LM2852XMXA-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2852XMXA-3.0 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 LM2852XMXA-3.0 reliable?
The price and inventory of LM2852XMXA-3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2852XMXA-3.0 is usually 5 days.
3.What payment methods are accepted for LM2852XMXA-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852XMXA-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2852XMXA-3.0?
LM2852XMXA-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2852XMXA-3.0 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 LM2852XMXA-3.0?
For technical support, including LM2852XMXA-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852XMXA-3.0 requirements.
6.How does Aetrix verify that LM2852XMXA-3.0 is sourced from the original manufacturer or authorized distributors?
All LM2852XMXA-3.0 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 LM2852XMXA-3.0 meets industry standards.
7.What is the process for return or replacement of LM2852XMXA-3.0?
All LM2852XMXA-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM2852XMXA-3.0, 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 LM2852XMXA-3.0 part is unused and in its original packaging.
Return procedure for LM2852XMXA-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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