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Texas Instruments LM2852XMXAX-3.3/NOPB
- Part No.:
- LM2852XMXAX-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2852XMXAX-3.3/NOPB.pdf
- Description:
- IC REG BUCK 3.3V 2A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,393
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Product details
Overview
LM2852XMXAX-3.3/NOPB from Texas Instruments is a 2A synchronous buck regulator with fixed 3.3V output, 1.5 MHz switching frequency, input voltage range of 2.85 V to 5.5 V, internal 60-mΩ PFET/NFET switches, and voltage-mode control architecture. It delivers point-of-load power for FPGA core rails and low-voltage embedded processors requiring stable 3.3V at up to 2A.
For engineers reviewing the LM2852XMXAX-3.3/NOPB datasheet, LM2852XMXAX-3.3/NOPB pinout, LM2852XMXAX-3.3/NOPB application, or LM2852XMXAX-3.3/NOPB equivalent, this page provides verified package mapping (HTSSOP-14), confirmed thermal metrics (RθJA = 39.2°C/W), factory-set output accuracy (±1.73% at 3.3V), soft-start programmability (1–50 nF), and validated 1.5 MHz operation across –40°C to 125°C.
Technical Context
The LM2852XMXAX-3.3/NOPB implements voltage-mode PWM control with integrated type-three compensation, eliminating external compensation components. Its split-rail architecture separates AVIN (logic bias) from PVIN (power FET supply), enabling optimized efficiency when PVIN ≤ AVIN.
Switch node protection monitors SW voltage to prevent shoot-through during light-load conditions, while internal current limiting (2.75–4.95 A) and thermal shutdown (165°C, 10°C hysteresis) ensure robust operation under fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.73% (0.057 V tolerance) at TJ = –40°C to 125°C |
| Max Output Current | 2 A continuous load capability with internal MOSFETs (75 mΩ PFET / 55 mΩ NFET at 25°C) |
| Switching Frequency | 1.5 MHz nominal (1050–1825 kHz over temperature), enabling compact LC filter design |
| Input Voltage Range | 2.85 V to 5.5 V on AVIN; PVIN must be ≤ AVIN and ≥1.5 V |
| Quiescent Current | 0.85 mA typical (2 mA max) in active mode; 10 µA typical (25 µA max) in shutdown |
| Efficiency | Up to 96% at 3.3 VOUT/3.3 VIN/1 A; 94% at 3.3 VOUT/5 VIN/1 A |
| Thermal Resistance | RθJA = 39.2°C/W (HTSSOP-14 exposed-pad package) |
Pinout & Package
LM2852XMXAX-3.3/NOPB uses a 14-pin HTSSOP package (5.00 mm × 4.40 mm) with exposed thermal pad soldered to PCB ground plane for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN (Pin 1) | Chip bias supply | Provides power to internal logic; must be ≥2.85 V and ≥PVIN |
| EN (Pin 2) | Enable control | Internally pulled up; tie to GND to disable; 75% AVIN threshold for enable |
| SGND (Pin 3) | Signal ground reference | Reference for error amplifier and feedback network; separate from PGND |
| SS (Pin 4) | Soft-start timing | Connects to 1–50 nF capacitor to control output ramp time and limit inrush |
| NC (Pins 5, 12, 13) | No connect | Must be left floating or tied to GND; no internal connection |
| PVIN (Pins 6, 7) | Power FET supply | Drives internal high-side/low-side MOSFETs; connects to input bulk capacitor |
| SNS (Pin 14) | Output voltage sense | High-impedance feedback node; connect directly to load for accurate regulation |
| PGND (Pins 10, 11) | Power ground return | Low-impedance path for switch current; tie to thermal pad and main ground plane |
| SW (Pins 8, 9) | Switch node | Connects to output inductor; carries high di/dt; requires short, wide trace |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed output | 3.3 V fixed output set at wafer level; no external resistor divider required |
| Integrated power switches | Internal 75 mΩ PFET and 55 mΩ NFET eliminate external MOSFETs and drivers |
| Type-three compensation | On-chip compensation network enables stable operation with minimal external components |
| Split-rail operation | Independent AVIN/PVIN supplies allow optimization of logic bias and power stage efficiency |
| Switch node protection | Prevents abnormal switching during no-load or light-load startup, improving reliability |
Applications
| Industrial PLC I/O Module | FPGA Core Power Supply |
|---|---|
Use Scenario: Regulating 3.3V rail for digital I/O buffers and communication interfaces in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary DC-DC converter delivering clean, regulated 3.3V at up to 2A with tight line/load regulation (±0.6% line, 8 mV/A load). Use Value: Enables single-supply operation from 5V or 3.3V bus while maintaining <100 mV dropout under transient load steps. | Use Scenario: Providing dedicated 3.3V core voltage to Xilinx Spartan-7 or Intel MAX 10 FPGA configuration and I/O banks. IC Role / Device Role / Timing Role: Synchronous buck regulator with 1.5 MHz switching, minimizing EMI near high-speed clock domains. Use Value: Achieves >94% efficiency at 1A load from 5V input, reducing thermal load in space-constrained BGA packages. |
| Portable Medical Sensor Hub | 5G Small Cell Baseband Processor |
Use Scenario: Powering ultra-low-noise analog front-end and BLE SoC in battery-powered wearable diagnostics devices. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating from single-cell Li-ion (3.0–4.2V) to fixed 3.3V output. Use Value: Delivers 96% peak efficiency at 3.3VIN/3.3VOUT, extending runtime without compromising RF sensitivity. | Use Scenario: Generating 3.3V auxiliary rail for ADC/DAC interfaces and SerDes PHYs in compact 5G fronthaul units. IC Role / Device Role / Timing Role: Compact 1.5 MHz buck converter supporting fast transient response (<10 µs) to baseband processor activity bursts. Use Value: Internal current limit (2.75–4.95 A) and thermal shutdown (165°C) protect against sustained overload in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6286418RTER | 1.8V fixed output; 4-MHz switching; 3-A rating; QFN-11 package | Higher frequency allows smaller inductors but requires tighter layout control for EMI | Select when 1.8V output and higher current headroom are needed; not drop-in for 3.3V systems |
| MP2143GJ-Z | Adjustable output (0.8–6V); 3-MHz switching; 3-A rating; 10-pin QFN | Requires external feedback resistors; lacks factory-programmed 3.3V option | Choose for designs needing flexible output voltage or higher current, accepting added component count |
Compared with TPS6286418RTER and MP2143GJ-Z, LM2852XMXAX-3.3/NOPB offers guaranteed 3.3V accuracy without external resistors, lower RθJA (39.2 vs ≥45°C/W), and proven 1.5 MHz stability with ceramic output capacitors - making it optimal for cost-sensitive, fixed-output industrial and communications applications where layout simplicity and thermal margin are critical.
Availability
LM2852XMXAX-3.3/NOPB is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA core power supplies, portable medical sensor hubs, and 5G small cell baseband processors requiring stable component supply with full lifecycle support.
Supply support for LM2852XMXAX-3.3/NOPB 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for industrial, automotive, and communications markets.
The LM2852 product line delivers highly integrated synchronous buck regulators targeting space-constrained, high-efficiency point-of-load applications where minimal external components and factory-set outputs reduce design risk and time-to-market.
FAQ
What is the exact output voltage tolerance of LM2852XMXAX-3.3/NOPB across temperature?
The LM2852XMXAX-3.3/NOPB has a factory-programmed 3.3V output with guaranteed tolerance of ±1.73% (±0.057 V) over the full junction temperature range of –40°C to 125°C, as specified in the Electrical Characteristics table under "VOUT = 3.3-V option".
Does LM2852XMXAX-3.3/NOPB require external compensation components?
No, LM2852XMXAX-3.3/NOPB integrates a complete type-three compensation network internally. This eliminates the need for external compensation capacitors or resistors, reducing bill-of-materials count and simplifying layout for stable 1.5 MHz operation.
Can LM2852XMXAX-3.3/NOPB operate with PVIN lower than AVIN?
Yes - LM2852XMXAX-3.3/NOPB supports split-rail operation where PVIN must be ≤ AVIN and ≥1.5 V. For example, AVIN = 5 V and PVIN = 3.3 V is valid, enabling independent optimization of logic bias and power-stage efficiency.
What is the recommended soft-start capacitor value for LM2852XMXAX-3.3/NOPB?
The LM2852XMXAX-3.3/NOPB supports soft-start capacitors from 1 nF to 50 nF. A 2.7 nF capacitor (e.g., Vishay VJ0805Y272KXXA) yields ~3 ms startup time and is validated in TI's reference designs for both 500 kHz and 1.5 MHz variants.
Is LM2852XMXAX-3.3/NOPB pin-compatible with LM2852YMXAX-3.3/NOPB?
No - LM2852XMXAX-3.3/NOPB (1.5 MHz) and LM2852YMXAX-3.3/NOPB (500 kHz) share identical HTSSOP-14 pinout and package dimensions, but differ in internal oscillator frequency and current-limit thresholds; they are functionally interchangeable only if system-level timing and loop stability are revalidated.
LM2852XMXAX-3.3/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- 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):
- 2.85V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- 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
LM2852XMXAX-3.3/NOPB FAQ
1.How can I place an order for LM2852XMXAX-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2852XMXAX-3.3/NOPB 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 LM2852XMXAX-3.3/NOPB reliable?
The price and inventory of LM2852XMXAX-3.3/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2852XMXAX-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LM2852XMXAX-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852XMXAX-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2852XMXAX-3.3/NOPB?
LM2852XMXAX-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2852XMXAX-3.3/NOPB 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 LM2852XMXAX-3.3/NOPB?
For technical support, including LM2852XMXAX-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852XMXAX-3.3/NOPB requirements.
6.How does Aetrix verify that LM2852XMXAX-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2852XMXAX-3.3/NOPB 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 LM2852XMXAX-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LM2852XMXAX-3.3/NOPB?
All LM2852XMXAX-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2852XMXAX-3.3/NOPB, 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 LM2852XMXAX-3.3/NOPB part is unused and in its original packaging.
Return procedure for LM2852XMXAX-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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