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Texas Instruments LM2852XMXAX-3.0/NOPB
- Part No.:
- LM2852XMXAX-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2852XMXAX-3.0/NOPB.pdf
- Description:
- IC REG BUCK 3V 2A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,222
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Product details
Overview
LM2852XMXAX-3.0/NOPB from Texas Instruments is a 2A synchronous buck regulator with fixed 3.0V output, 1.5MHz switching frequency, internal 60mΩ PMOS/NMOS switches, voltage-mode control, and factory-programmed EEPROM output setting. It operates from 2.85V–5.5V input and delivers stable point-of-load power to FPGA core rails in portable computing systems.
For engineers reviewing the LM2852XMXAX-3.0/NOPB datasheet, LM2852XMXAX-3.0/NOPB pinout, LM2852XMXAX-3.0/NOPB application, or LM2852XMXAX-3.0/NOPB equivalent, key selection criteria include its 1.5MHz high-frequency operation enabling compact filter design, integrated type-three compensation eliminating external compensation components, and HTSSOP-14 exposed-pad thermal performance for 2A continuous load capability.
Technical Context
The LM2852XMXAX-3.0/NOPB implements voltage-mode PWM control with an internal oscillator fixed at 1.5MHz (±25% over temperature), supporting duty cycles from 0% to 100%. Its integrated type-three compensation network eliminates external compensation components while maintaining stability across recommended L/C/ESR ranges.
It features dual internal MOSFETs (75mΩ PMOS / 55mΩ NMOS typical at 25°C), soft-start controlled via external capacitor on SS pin (1–50nF range), and UVLO with 2.85V turn-on threshold and 85mV hysteresis. Thermal shutdown activates at 165°C with 10°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1.35% (2.9325V–3.0675V) at TJ = –40°C to +125°C |
| Max Output Current | 2A continuous; peak current limit 2.75–4.95A ensures robust overload protection |
| Switching Frequency | 1.5MHz nominal (1050–1825kHz over temp); enables use of ≤10µH inductors and ceramic output capacitors |
| Input Voltage Range | 2.85V to 5.5V; AVIN must be ≥ PVIN; supports single-rail 3.3V or dual-rail 3.3V/5V bias schemes |
| Quiescent Current | 0.85–2mA operating; 10–25µA shutdown; enables low-power standby modes in battery-powered systems |
| Thermal Resistance | θJA = 38°C/W; exposed-pad HTSSOP-14 package delivers >1.5W dissipation capability at 25°C ambient |
| Efficiency | Up to 96% at 3.3VIN/3.0VOUT, 2A load; optimized for high-efficiency point-of-load conversion |
Pinout & Package
LM2852XMXAX-3.0/NOPB uses a 14-pin HTSSOP package (PWP0014A) with exposed thermal pad soldered to PCB ground plane for enhanced thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN (1) | Chip bias supply | Provides power to internal logic; must be ≥ PVIN; connect to input rail or dedicated low-noise bias source |
| EN (2) | Enable control | Internally pulled up; tie to GND to disable; 75% AVIN threshold for enable, 25% for disable |
| SGND (3) | Signal ground reference | Separate from PGND; connects to analog ground plane to minimize noise coupling into feedback path |
| SS (4) | Soft-start timing node | Connects to external capacitor (e.g., 2.7nF) to control output ramp time; internal 400kΩ resistor sets RC time constant |
| NC (5,12,13) | No-connect | Must be left floating or tied to GND; no internal connection; improves thermal conduction when grounded |
| PVIN (6,7) | Main power input | Supplies internal power FETs; requires low-ESR bulk capacitor placed adjacent to pins to handle high di/dt |
| SNS (14) | Output voltage sense | High-impedance feedback node; connect directly to load VOUT point to compensate for IR drop in PCB traces |
| SW (8,9) | Power switch node | Drives external inductor; high dv/dt node requiring short, wide trace and minimal loop area to reduce EMI |
| PGND (10,11) | Power ground return | High-current return path for internal FETs; connect to solid internal ground plane under exposed pad |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 3.0V output | Eliminates external resistor divider; ensures ±1.35% accuracy over full temperature range without calibration |
| Integrated type-three compensation | Removes need for external compensation network; guarantees stability with recommended L/C/ESR combinations |
| 1.5MHz switching frequency | Enables use of sub-10µH inductors and low-ESR ceramic capacitors, reducing solution size by >40% vs 500kHz variants |
| Internal 60mΩ MOSFETs | Reduces conduction losses and external component count; supports 2A continuous output with <1.5W total dissipation at 3.3VIN |
| Exposed-pad HTSSOP-14 | Delivers θJA = 38°C/W; allows >1.5W power handling at 25°C ambient without heatsink |
Applications
| Mobile Baseband Processor Power | FPGA Core Rail Supply |
|---|---|
Use Scenario: Powers ARM-based baseband processors in LTE smartphones requiring fast transient response and tight output regulation during burst-mode RF transmission. IC Role / Device Role / Timing Role: Primary synchronous buck converter delivering 3.0V/2A with <100µs transient recovery to maintain processor stability during dynamic load steps. Use Value: 1.5MHz operation minimizes output voltage droop during 2A load transients; integrated MOSFETs eliminate gate drive complexity and layout sensitivity. | Use Scenario: Supplies configurable logic core voltage for Xilinx Spartan-7 or Intel MAX 10 FPGAs in portable test equipment with space-constrained PCB layouts. IC Role / Device Role / Timing Role: Fixed-output DC-DC regulator providing clean, low-noise 3.0V core power with soft-start sequencing to prevent inrush current damage during power-up. Use Value: Factory-set 3.0V eliminates resistor tolerance errors; type-three compensation ensures stable operation with small ceramic output capacitors (<22µF). |
| Industrial IoT Sensor Hub | USB-C PD Sink Power |
Use Scenario: Powers multi-sensor fusion modules (accelerometer, gyroscope, environmental sensors) in battery-operated edge nodes requiring ultra-low quiescent current during sleep mode. IC Role / Device Role / Timing Role: High-efficiency buck regulator with 10µA shutdown current enabling >1-year battery life in deep-sleep states. Use Value: 10–25µA shutdown current and internal enable pull-up reduce BOM count; 38°C/W thermal resistance sustains 2A operation in sealed enclosures. | Use Scenario: Generates 3.0V auxiliary rail from USB-C PD 5V/9V/15V input in portable monitors or docking stations with strict EMI limits. IC Role / Device Role / Timing Role: Secondary buck stage converting negotiated PD bus voltage to fixed 3.0V for display interface ICs and microcontrollers. Use Value: 1.5MHz switching moves noise spectrum above sensitive 2.4GHz ISM band; HTSSOP exposed pad improves thermal margin under sustained 2A load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2852XMXA-3.0/NOPB | Same 3.0V output and 1.5MHz frequency, but standard 94-unit tape-and-reel packaging vs 2500-unit reel | Identical electrical performance; differs only in packaging quantity and MSL handling | Select when smaller order quantities or faster sampling are required |
| TPS6286418RTER | 3.0V output, 2.5MHz switching, 0.9mm height QFN; lower IQ (1.2µA shutdown) but requires external compensation | Better suited for ultra-thin designs and deeper sleep modes; lacks integrated compensation | Choose for space-critical wearables where 0.9mm profile and sub-2µA shutdown outweigh added compensation design effort |
Compared with LM2852XMXA-3.0/NOPB and TPS6286418RTER, the LM2852XMXAX-3.0/NOPB offers optimal balance of high-frequency operation, integrated compensation, and industrial-grade thermal performance in a cost-effective HTSSOP package-making it ideal for volume production of portable industrial and communications equipment where layout simplicity and thermal reliability are prioritized over minimum footprint.
Availability
LM2852XMXAX-3.0/NOPB is available at Aetrix Electronics and suitable for mobile computing, FPGA power delivery, industrial IoT sensor hubs, and USB-C PD sink applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for LM2852XMXAX-3.0/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 leader specializing in analog, embedded processing, and power management solutions with over 90 years of innovation in high-reliability power conversion.
The LM2852XMXAX-3.0/NOPB belongs to TI's SIMPLE SWITCHER® synchronous buck regulator family, engineered for rapid, low-risk power supply design in space-constrained portable and industrial applications where integrated MOSFETs, fixed outputs, and high-frequency operation reduce bill-of-materials and layout complexity.
FAQ
What is the exact output voltage tolerance of the LM2852XMXAX-3.0/NOPB over temperature?
The LM2852XMXAX-3.0/NOPB delivers a factory-programmed 3.0V output with guaranteed tolerance of ±1.35% (2.9325V to 3.0675V) across the full operating junction temperature range of –40°C to +125°C, as specified in the Electrical Characteristics table under VOUT = 3.0V option. This tolerance includes initial accuracy, line regulation, and load regulation effects.
Does the LM2852XMXAX-3.0/NOPB require external compensation components?
No, the LM2852XMXAX-3.0/NOPB integrates a complete type-three compensation network on-die. This eliminates the need for external compensation resistors or capacitors, simplifying design and improving reliability. Stability is ensured when using inductors and capacitors within the recommended ranges specified in Table 1 of the datasheet for the 1.5MHz (X) version.
What is the maximum allowable input voltage for the LM2852XMXAX-3.0/NOPB?
The absolute maximum rating for PVIN and AVIN pins of the LM2852XMXAX-3.0/NOPB is 6.5V, but the recommended operating input voltage range is 2.85V to 5.5V. Exceeding 5.5V may cause permanent damage or degraded reliability. AVIN must always be ≥ PVIN, and both rails must remain within this range for guaranteed operation.
How does the soft-start function work on the LM2852XMXAX-3.0/NOPB?
The LM2852XMXAX-3.0/NOPB implements soft-start via an internal 400kΩ resistor charging an external capacitor connected to the SS pin. A 2.7nF capacitor yields ~3ms startup time. The soft-start voltage controls the DAC reference, forcing output voltage to ramp linearly. During fault conditions like short circuits, the soft-start capacitor is actively discharged to enable graceful restart.
Can the LM2852XMXAX-3.0/NOPB operate with separate AVIN and PVIN supplies?
Yes, the LM2852XMXAX-3.0/NOPB supports split-rail operation: AVIN powers the control logic (2.85V–5.5V), while PVIN supplies the power FETs (1.5V–5.5V). PVIN must never exceed AVIN. This configuration allows optimization of efficiency and noise isolation-for example, using a clean 3.3V AVIN and higher-current 5V PVIN in mixed-signal systems.
LM2852XMXAX-3.0/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:
- 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
LM2852XMXAX-3.0/NOPB FAQ
1.How can I place an order for LM2852XMXAX-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2852XMXAX-3.0/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-3.0/NOPB reliable?
The price and inventory of LM2852XMXAX-3.0/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-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2852XMXAX-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852XMXAX-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2852XMXAX-3.0/NOPB?
LM2852XMXAX-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2852XMXAX-3.0/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-3.0/NOPB?
For technical support, including LM2852XMXAX-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852XMXAX-3.0/NOPB requirements.
6.How does Aetrix verify that LM2852XMXAX-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2852XMXAX-3.0/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-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2852XMXAX-3.0/NOPB?
All LM2852XMXAX-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2852XMXAX-3.0/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-3.0/NOPB part is unused and in its original packaging.
Return procedure for LM2852XMXAX-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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