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Texas Instruments LM2852XMXA-0.8/NOPB
- Part No.:
- LM2852XMXA-0.8/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2852XMXA-0.8/NOPB.pdf
- Description:
- IC REG BUCK 0.8V 2A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:281
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Product details
Overview
LM2852XMXA-0.8/NOPB from Texas Instruments is a 2 A synchronous buck regulator with factory-programmed 0.8 V output, 1.5 MHz switching frequency, input voltage range of 2.85 V to 5.5 V, internal 60 mΩ MOSFETs, and voltage-mode control architecture. It delivers point-of-load power to FPGA/DSP core rails in space-constrained portable computing and networking infrastructure.
For engineers reviewing the LM2852XMXA-0.8/NOPB datasheet, LM2852XMXA-0.8/NOPB pinout, LM2852XMXA-0.8/NOPB application, or LM2852XMXA-0.8/NOPB equivalent, key selection criteria include verified 1.5 MHz operation, 0.8 V ±2.25% output tolerance at 25°C, thermal performance in HTSSOP-14 (RθJA = 39.2°C/W), and compatibility with ceramic output capacitors requiring low ESR (<10 mΩ).
Technical Context
The LM2852XMXA-0.8/NOPB implements voltage-mode PWM control with internal type-three compensation, eliminating external compensation components. Its split-rail architecture separates AVIN (logic bias) from PVIN (power FET supply), enabling optimized input filtering and thermal management.
Switch node protection logic disables switching under no-load or light-load conditions until output loading triggers normal regulation-preventing false fault detection while maintaining 10 µA shutdown current and 0.85 mA operating current at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-set 0.8 V ±1.8% (min/max) over –40°C to 125°C; enables direct core powering of low-voltage ASICs. |
| Switching Frequency | 1.5 MHz (typical), 1.05–1.825 MHz (min/max); supports compact 1–10 µH inductors and ceramic output caps. |
| Max Load Current | 2 A continuous; peak current limit threshold 2.75–4.95 A ensures robust transient response without saturation. |
| Input Voltage Range | 2.85 V to 5.5 V on AVIN; PVIN ≤ AVIN; allows direct connection to single-cell Li-ion or 3.3 V/5 V system rails. |
| Efficiency | Up to 96% at 3.3 VIN/0.8 VOUT/1 A; high efficiency sustained across 0.1–10 A load range per typical curves. |
| Thermal Resistance | RθJA = 39.2°C/W (HTSSOP-14); enables 2 A operation without forced airflow in ambient ≤60°C. |
| Quiescent Current | 0.85 mA (non-switching, 25°C); reduces standby power in always-on subsystems. |
Pinout & Package
LM2852XMXA-0.8/NOPB uses a thermally enhanced 14-pin HTSSOP package (5.00 mm × 4.40 mm) with exposed pad for PCB-level heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN (Pin 1) | Chip bias supply | Powers internal logic; must be ≥ PVIN and within 2.85–5.5 V; decoupling required near pin. |
| EN (Pin 2) | Enable control | Internally pulled up; tie to GND to disable; 75% AVIN threshold for enable ensures noise immunity. |
| SGND (Pin 3) | Signal ground reference | Separate from PGND; connects to error amp and feedback network to minimize noise coupling. |
| SS (Pin 4) | Soft-start timing | RC-controlled ramp; 2.7 nF yields ~3 ms startup; prevents inrush into large output capacitance. |
| NC (Pins 5, 12, 13) | No connect | Must be left floating or tied to GND; no internal connection; avoids parasitic coupling. |
| PVIN (Pins 6, 7) | Power FET supply | Drives high-side/low-side MOSFETs; requires low-ESR bulk capacitor adjacent to pins. |
| SNS (Pin 14) | Output voltage sense | High-impedance feedback node; connect directly to load for accurate remote sensing. |
| PGND (Pins 10, 11) | Power ground return | Carries high di/dt switch currents; must connect to low-inductance ground plane under exposed pad. |
| SW (Pins 8, 9) | Switch node | Connects to inductor; high dv/dt node; requires short, wide trace to minimize EMI and losses. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed output | 0.8 V fixed (no external resistor divider needed), reducing BOM count and layout area. |
| Integrated MOSFETs | 60 mΩ high-side + 60 mΩ low-side RDS(on) at 25°C enables >90% efficiency at 1 A without external switches. |
| Internal type-three compensation | Eliminates external compensation network; guarantees stability with recommended L/C/ESR ranges. |
| Split-rail operation | Independent AVIN/PVIN supplies allow optimization of logic rail (e.g., 3.3 V) and power rail (e.g., 5 V) for thermal and noise isolation. |
| Switch node protection | Prevents false triggering during no-load startup by disabling switching until regulated output is loaded. |
Applications
| Baseband Processor Core Supply | FPGA I/O Bank Regulation |
|---|---|
Use Scenario: Powers ARM-based baseband processors in LTE modems where dynamic voltage scaling demands tight 0.8 V regulation under 0–2 A load transients. IC Role / Device Role / Timing Role: Primary DC-DC converter delivering stable core voltage; operates at 1.5 MHz to avoid interference with RF front-end bands. Use Value: 96% peak efficiency at 1 A reduces thermal load in sealed enclosures; soft-start prevents processor reset during power-up. | Use Scenario: Supplies configurable I/O banks in Xilinx Artix-7 FPGAs requiring 0.8 V at up to 2 A with <±1% output accuracy. IC Role / Device Role / Timing Role: Point-of-load regulator placed adjacent to FPGA; uses SNS pin for Kelvin sensing to reject PCB IR drop. Use Value: Internal 60 mΩ MOSFETs eliminate external switch losses; HTSSOP thermal design sustains 2 A in 4-layer PCBs without heatsinks. |
| Optical Transceiver Bias Rail | Industrial PLC Digital I/O Module |
Use Scenario: Generates clean 0.8 V bias for laser driver ICs in SFP+ modules where EMI-sensitive analog circuits coexist with digital logic. IC Role / Device Role / Timing Role: Low-noise power source; 1.5 MHz switching moves harmonics above 100 MHz to simplify filtering. Use Value: Split-rail architecture isolates noisy PVIN switching noise from AVIN-biased analog blocks; SGND/PGND separation minimizes ground bounce. | Use Scenario: Powers microcontroller peripherals in DIN-rail mounted PLCs operating continuously at 70°C ambient. IC Role / Device Role / Timing Role: Main 2 A supply for isolated digital I/O ASICs; withstands 125°C junction temperature per spec. Use Value: RθJA = 39.2°C/W enables full 2 A output without derating; shutdown current <25 µA extends battery backup runtime. |
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-0.8/NOPB | 500 kHz switching frequency; higher inductor values (10–22 µH) required; lower switching loss but larger magnetics. | Better suited for cost-sensitive designs where board area is less constrained and EMI filtering targets sub-1 MHz bands. | Select when prioritizing efficiency at light loads or minimizing radiated emissions below 500 kHz. |
| TPS62231DRVR | 1.8–6.5 V input; 0.6–5.5 V adjustable output; 3 MHz switching; 1.5 A max; smaller 6-pin WSON package. | Targeted at ultra-compact applications with variable output needs; lacks factory-programmed 0.8 V option and split-rail capability. | Choose for space-constrained designs needing programmability and higher frequency, accepting reduced current rating and no AVIN/PVIN separation. |
Compared with LM2852YMXA-0.8/NOPB, the LM2852XMXA-0.8/NOPB trades lower light-load efficiency for 3× higher frequency and smaller passives; versus TPS62231DRVR, it offers higher current, fixed 0.8 V, and thermal robustness in HTSSOP-critical for industrial 2 A loads.
Availability
LM2852XMXA-0.8/NOPB is available at Aetrix Electronics and suitable for FPGA core power, optical transceiver bias, and industrial PLC digital I/O modules requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for LM2852XMXA-0.8/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 since 1958.
The LM2852 product line delivers highly integrated synchronous buck regulators for low-voltage, high-current point-of-load applications in portable, networking, and industrial systems-designed to minimize external components while ensuring thermal reliability.
FAQ
What is the switching frequency of the LM2852XMXA-0.8/NOPB?
The LM2852XMXA-0.8/NOPB operates at a nominal 1.5 MHz switching frequency, with a guaranteed range of 1.05 MHz to 1.825 MHz across –40°C to 125°C junction temperature. This high-frequency operation enables use of small 1–10 µH inductors and low-ESR ceramic output capacitors, reducing solution footprint compared to 500 kHz alternatives like the LM2852YMXA-0.8/NOPB.
Does the LM2852XMXA-0.8/NOPB require external compensation components?
No, the LM2852XMXA-0.8/NOPB integrates a complete type-three compensation network internally. This eliminates the need for external resistors and capacitors in the feedback loop, simplifying design and improving stability across its supported output capacitor (10–220 µF) and inductor (1–22 µH) ranges-provided component ESR stays within specified limits.
How does the split-rail architecture of the LM2852XMXA-0.8/NOPB improve system performance?
The LM2852XMXA-0.8/NOPB separates AVIN (logic bias) from PVIN (power FET supply), allowing independent optimization: AVIN can be a clean 3.3 V rail for noise-sensitive analog blocks, while PVIN uses a higher-current 5 V rail for efficient power delivery. This reduces coupling between switching noise and control circuitry, improving PSRR and enabling cleaner regulation in mixed-signal environments.
What is the maximum continuous output current supported by the LM2852XMXA-0.8/NOPB?
The LM2852XMXA-0.8/NOPB supports up to 2 A of continuous output current under recommended operating conditions (TJ ≤ 125°C, RθJA = 39.2°C/W). Its internal 60 mΩ high-side and low-side MOSFETs, combined with the thermally enhanced HTSSOP-14 package, sustain this current in typical 4-layer PCB layouts without forced airflow at ambient temperatures up to 60°C.
Can the LM2852XMXA-0.8/NOPB be used with ceramic output capacitors?
Yes-the LM2852XMXA-0.8/NOPB is specifically optimized for ceramic output capacitors, which typically exhibit ESR < 10 mΩ. The 1.5 MHz version's control loop and internal compensation are validated for stable operation with 10–220 µF ceramic capacitors, unlike the 500 kHz LM2852Y variant that supports higher-ESR tantalum and niobium oxide types.
LM2852XMXA-0.8/NOPB 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):
- 0.8V
- 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-0.8/NOPB FAQ
1.How can I place an order for LM2852XMXA-0.8/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2852XMXA-0.8/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 LM2852XMXA-0.8/NOPB reliable?
The price and inventory of LM2852XMXA-0.8/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2852XMXA-0.8/NOPB is usually 5 days.
3.What payment methods are accepted for LM2852XMXA-0.8/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852XMXA-0.8/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2852XMXA-0.8/NOPB?
LM2852XMXA-0.8/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2852XMXA-0.8/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 LM2852XMXA-0.8/NOPB?
For technical support, including LM2852XMXA-0.8/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852XMXA-0.8/NOPB requirements.
6.How does Aetrix verify that LM2852XMXA-0.8/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2852XMXA-0.8/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 LM2852XMXA-0.8/NOPB meets industry standards.
7.What is the process for return or replacement of LM2852XMXA-0.8/NOPB?
All LM2852XMXA-0.8/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2852XMXA-0.8/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 LM2852XMXA-0.8/NOPB part is unused and in its original packaging.
Return procedure for LM2852XMXA-0.8/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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