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Texas Instruments LM2852YMXA-2.5/NOPB
- Part No.:
- LM2852YMXA-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2852YMXA-2.5/NOPB.pdf
- Description:
- IC REG BUCK 2.5V 2A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:171
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Product details
Overview
LM2852YMXA-2.5/NOPB from Texas Instruments is a 2 A synchronous buck regulator with fixed 2.5 V output, 500 kHz switching frequency, input voltage range of 2.85 V to 5.5 V, internal 60 mΩ PFET/NFET switches, and voltage-mode control. It delivers point-of-load power to FPGA core rails in portable computing systems.
For engineers reviewing the LM2852YMXA-2.5/NOPB datasheet, LM2852YMXA-2.5/NOPB pinout, LM2852YMXA-2.5/NOPB application, or LM2852YMXA-2.5/NOPB equivalent, key selection criteria include output accuracy (±2.23% at 2.5 V), thermal performance (RθJA = 39.2 °C/W), soft-start programmability (1–50 nF), and HTSSOP-14 package compatibility with high-density PCB layouts.
Technical Context
The LM2852YMXA-2.5/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 across input ranges.
Switch node protection monitors SW voltage to prevent shoot-through during light-load conditions, while internal UVLO (2.85 V rising threshold) and thermal shutdown (165 °C) ensure robust operation. The device supports factory-programmed 2.5 V output without external feedback resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2.23% (2.4437–2.5563 V) over –40°C to 125°C junction temperature |
| Max Output Current | 2 A continuous load capability with internal current limiting (2.25–3.65 A typical) |
| Switching Frequency | 500 kHz ±37.5% (325–625 kHz), enabling compact magnetics and EMI filtering |
| Input Voltage Range | 2.85 V to 5.5 V on AVIN; PVIN ≤ AVIN, supporting single-supply or split-rail configurations |
| Efficiency | Up to 96% at 2.5 V/1 A with 3.3 V input, optimized for low-voltage, high-current POL conversion |
| Quiescent Current | 0.85 mA typical non-switching IQ; 10 µA shutdown current enables battery-sensitive designs |
| Thermal Resistance | RθJA = 39.2 °C/W (HTSSOP-14), enabling 1.5 W dissipation at 40°C ambient without forced air |
Pinout & Package
LM2852YMXA-2.5/NOPB uses a 14-pin HTSSOP package (5.00 mm × 4.40 mm) with exposed thermal pad soldered to PCB ground 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; no external pullup required |
| SGND (Pin 3) | Signal ground reference | Separate from PGND to minimize noise coupling into error amplifier |
| SS (Pin 4) | Soft-start timing | Connects to 1–50 nF capacitor to control output ramp time and limit inrush current |
| NC (Pins 5, 12, 13) | No connect | Must be left floating or tied to GND; no electrical function |
| PVIN (Pins 6, 7) | Power FET supply | Drives internal high-side/low-side MOSFETs; connects to bulk input capacitor |
| SNS (Pin 14) | Output voltage sense | High-impedance feedback node; route directly to load for accurate regulation |
| PGND (Pins 10, 11) | Power ground return | Low-impedance path for switch current; connect to thermal pad and main ground plane |
| SW (Pins 8, 9) | Switch node | Connects to output inductor; high dv/dt node requiring short, wide trace routing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Type-Three Compensation | Eliminates external compensation network, reducing BOM count and layout sensitivity |
| Split-Rail Operation (AVIN/PVIN) | Enables independent optimization of logic bias and power stage, improving efficiency at low PVIN |
| Internal 60 mΩ Power Switches | Reduces conduction losses and eliminates external MOSFETs and drivers |
| Factory-Programmed 2.5 V Output | Removes need for external feedback resistors, ensuring precision and reducing component variation |
| Switch Node Protection | Prevents abnormal switching under no-load/light-load conditions, enhancing reliability |
Applications
| Portable Computing Core Supply | FPGA I/O Bank Regulation |
|---|---|
Use Scenario: Powering CPU/GPU cores in ultrabooks and tablets with tight thermal envelopes and dynamic load steps. IC Role / Device Role / Timing Role: Primary POL regulator delivering stable 2.5 V at up to 2 A with fast transient response. Use Value: High efficiency (>94% at 1 A, 3.3 VIN) minimizes heat generation; 500 kHz switching allows small 6.8–10 µH inductors. | Use Scenario: Supplying configurable I/O banks in Xilinx or Intel FPGAs where voltage margining and sequencing are critical. IC Role / Device Role / Timing Role: Fixed-output buck converter providing clean, low-noise 2.5 V rail with precise line/load regulation (±0.6% line, 8 mV/A load). Use Value: SNS pin enables remote sensing at FPGA package ball, maintaining ±1% regulation at load despite PCB IR drop. |
| ASIC Memory Interface Power | Industrial PLC Digital I/O Module |
Use Scenario: Powering DDR memory interfaces in ASIC-based networking processors requiring low ripple and high PSRR. IC Role / Device Role / Timing Role: Synchronous buck regulator supplying 2.5 V to memory PHYs with minimal output voltage deviation during burst reads/writes. Use Value: Internal voltage-mode control provides consistent loop stability across temperature; 100 µF CO support ensures <10 mVpp ripple at full load. | Use Scenario: Providing isolated 2.5 V logic supply in DIN-rail mounted PLC modules operating in harsh industrial environments. IC Role / Device Role / Timing Role: Robust DC-DC converter with thermal shutdown (165 °C) and UVLO (2.85 V) protecting against brownouts and overheating. Use Value: HTSSOP-14 exposed pad enables reliable thermal management at 125 °C junction temp; 10 µA shutdown current extends backup battery life. |
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-2.5/NOPB | 1.5 MHz switching frequency vs. 500 kHz; higher switching losses but smaller passive components | Better suited for space-constrained designs needing <3.3 µH inductors and ceramic output capacitors | Select when board area is critical and thermal headroom allows higher-frequency operation |
| TPS54227PWPR | 2.95–6.0 V input range; adjustable output (0.76 V–6.0 V); 2 A max; 700 kHz; no internal compensation | Requires external compensation and feedback resistors; broader input range but less integration | Choose when output voltage flexibility or higher input voltage tolerance is required |
Compared with LM2852XMXA-2.5/NOPB and TPS54227PWPR, the LM2852YMXA-2.5/NOPB offers optimal balance of integration (internal compensation, fixed 2.5 V), thermal performance (39.2 °C/W), and mid-frequency efficiency-making it ideal for cost-sensitive, thermally constrained 3.3 V input systems.
Availability
LM2852YMXA-2.5/NOPB is available at Aetrix Electronics and suitable for portable computing, FPGA power delivery, ASIC memory interface, and industrial PLC applications requiring stable component supply and long-term production continuity.
Supply support for LM2852YMXA-2.5/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 computing markets.
The LM2852 product line delivers highly integrated, pin-compatible synchronous buck regulators targeting low-voltage, high-current point-of-load applications where minimal external components and thermal efficiency are critical.
FAQ
What is the output voltage tolerance of the LM2852YMXA-2.5/NOPB over temperature?
The LM2852YMXA-2.5/NOPB has a guaranteed output voltage tolerance of ±2.23% (2.4437 V to 2.5563 V) across the full operating junction temperature range of –40°C to 125°C, as specified in the Electrical Characteristics table under VOUT for the 2.5-V option. This tolerance includes initial accuracy, line regulation, and load regulation effects.
Does the LM2852YMXA-2.5/NOPB require external compensation components?
No, the LM2852YMXA-2.5/NOPB integrates a complete type-three compensation network internally. This eliminates the need for external compensation capacitors or resistors, simplifying design and improving consistency across production units. The internal compensation is optimized for the recommended output filter component ranges listed in Table 1 of the datasheet.
Can the LM2852YMXA-2.5/NOPB operate with PVIN lower than AVIN?
Yes - the LM2852YMXA-2.5/NOPB supports split-rail operation where PVIN may be lower than AVIN, but PVIN must never exceed AVIN. For example, AVIN can be set to 5 V for logic bias while PVIN is supplied from a 3.3 V rail powering the internal FETs. This configuration improves efficiency at lower input voltages and reduces stress on the power stage.
What is the minimum soft-start capacitor value supported by the LM2852YMXA-2.5/NOPB?
The LM2852YMXA-2.5/NOPB supports soft-start capacitors from 1 nF to 50 nF. A 2.7 nF capacitor (as shown in typical application circuits) yields ~3 ms startup time. Values below 1 nF risk uncontrolled inrush current and potential current-limit activation during startup, violating recommended operating conditions.
Is the LM2852YMXA-2.5/NOPB pin-compatible with other LM2852 variants?
Yes - all LM2852 variants (including LM2852YMXA-2.5/NOPB, LM2852XMXA-2.5/NOPB, and other output voltage versions) share identical HTSSOP-14 pinout and footprint. The only functional differences are switching frequency (500 kHz vs. 1.5 MHz) and factory-programmed output voltage; no PCB redesign is needed when substituting within the same package variant.
LM2852YMXA-2.5/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:
- 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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
LM2852YMXA-2.5/NOPB FAQ
1.How can I place an order for LM2852YMXA-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2852YMXA-2.5/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 LM2852YMXA-2.5/NOPB reliable?
The price and inventory of LM2852YMXA-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2852YMXA-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM2852YMXA-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852YMXA-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2852YMXA-2.5/NOPB?
LM2852YMXA-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2852YMXA-2.5/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 LM2852YMXA-2.5/NOPB?
For technical support, including LM2852YMXA-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852YMXA-2.5/NOPB requirements.
6.How does Aetrix verify that LM2852YMXA-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2852YMXA-2.5/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 LM2852YMXA-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM2852YMXA-2.5/NOPB?
All LM2852YMXA-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2852YMXA-2.5/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 LM2852YMXA-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM2852YMXA-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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