My Inquiry
My Account
Texas Instruments LM2852XMXAX-2.5/NOPB
- Part No.:
- LM2852XMXAX-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2852XMXAX-2.5/NOPB.pdf
- Description:
- IC REG BUCK 2.5V 2A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,335
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2852XMXAX-2.5/NOPB from Texas Instruments is a 2A synchronous buck regulator with fixed 2.5V output, 1.5MHz switching frequency, 2.85V–5.5V input range, internal 60mΩ MOSFETs, and voltage-mode control. It delivers high-efficiency point-of-load power for FPGA core rails and portable computing systems.
For engineers reviewing the LM2852XMXAX-2.5/NOPB datasheet, LM2852XMXAX-2.5/NOPB pinout, LM2852XMXAX-2.5/NOPB application, or LM2852XMXAX-2.5/NOPB equivalent, key selection factors include its 1.5MHz operation enabling compact filter design, factory-programmed 2.5V output tolerance (±2.25%), and HTSSOP-14 thermal performance with RθJA = 39.2°C/W.
Technical Context
The LM2852XMXAX-2.5/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), allowing independent optimization of control and power paths.
Switch node protection monitors SW voltage to prevent device damage during fault conditions, while soft-start is controlled via an external capacitor (1–50nF) on the SS pin, enabling programmable startup ramp time without current-limit overshoot.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2.25% (0.782V to 2.5563V over temp) |
| Max Output Current | 2A continuous load capability with internal PFET/NFET switches |
| Switching Frequency | 1.5MHz (±25% over temp), enabling small inductors (e.g., 6.8µH) and ceramic output capacitors |
| Input Voltage Range | 2.85V to 5.5V on AVIN; PVIN ≤ AVIN, supporting single- or dual-rail operation |
| Efficiency | Up to 96% at 2.5V/1A with 3.3V input, optimized for low-voltage PoL conversion |
| Quiescent Current | 10µA shutdown current (TJ = 25°C); 0.85mA operating current (non-switching) |
| Thermal Resistance | RθJA = 39.2°C/W in HTSSOP-14 package, enabling >1W dissipation without forced air |
Pinout & Package
LM2852XMXAX-2.5/NOPB uses the 14-pin HTSSOP package (5.00 mm × 4.40 mm) with exposed thermal pad connected to PGND for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN (Pin 1) | Chip bias supply | Powers internal logic; must be ≥2.85V and ≥PVIN; decoupling required near pin |
| EN (Pin 2) | Enable control | Internally pulled up; tie to GND to disable; threshold is 25% AVIN low / 75% AVIN high |
| SGND (Pin 3) | Signal ground reference | Separate from PGND; connects to error amp and feedback network for noise immunity |
| SS (Pin 4) | Soft-start timing | Connects to 1–50nF capacitor; sets output ramp time and prevents inrush current |
| 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; requires local bulk capacitance |
| 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 currents; connect exposed pad here |
| SW (Pins 8,9) | Switch node | Connects to inductor; high dv/dt node requiring short, wide trace routing |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-mode PWM control | Enables stable loop response with minimal external components; supports standard LC filter design |
| Internal type-three compensation | Eliminates need for external compensation network, reducing BOM count and layout complexity |
| Split-rail AVIN/PVIN operation | Allows independent optimization of logic supply (e.g., 3.3V) and power rail (e.g., 2.5V), improving efficiency |
| Switch node protection circuitry | Prevents MOSFET damage during overvoltage or shoot-through events by disabling switching when SW exceeds safe limits |
| Factory-programmed 2.5V output | Guaranteed accuracy without external resistors; eliminates trimming and improves production yield |
Applications
| Portable Computing Power Rail | FPGA Core Voltage Regulation |
|---|---|
Use Scenario: Regulating 2.5V supply for CPU I/O banks or memory interfaces in ultrabooks and tablets. IC Role / Device Role / Timing Role: Primary DC-DC converter delivering tightly regulated 2.5V at up to 2A with fast transient response. Use Value: 1.5MHz operation enables use of 6.8µH inductors and 68–120µF ceramic capacitors, reducing solution footprint by >40% vs. 500kHz alternatives. | Use Scenario: Providing clean, low-noise 2.5V core power to Xilinx Spartan-6 or Intel Cyclone IV FPGA I/O banks. IC Role / Device Role / Timing Role: Point-of-load regulator placed adjacent to FPGA BGA package for minimal IR drop and EMI. Use Value: Internal 60mΩ MOSFETs and 2.25% output tolerance ensure <50mV core rail deviation under full 2A load step, meeting FPGA VCCIO spec. |
| Broadband Networking PHY Supply | Industrial Sensor Node Power |
Use Scenario: Powering Ethernet PHY transceivers (e.g., DP83848) requiring stable 2.5V at 1.2A in access points and switches. IC Role / Device Role / Timing Role: Secondary regulator fed from 3.3V system rail, providing isolated, low-ripple 2.5V for analog PHY circuits. Use Value: 94% peak efficiency at 1.2A/3.3V input minimizes thermal rise in dense PCB layouts; soft-start prevents PHY reset during power-up. | Use Scenario: Supplying 2.5V to ultra-low-power microcontrollers (e.g., MSP430FR5969) and precision ADCs in battery-operated sensor nodes. IC Role / Device Role / Timing Role: Main system regulator operating from Li-ion (3.0–4.2V) or USB (5V) input with dynamic voltage scaling support. Use Value: 10µA shutdown current extends battery life; 2.85V UVLO ensures reliable start-up even at end-of-discharge cell voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2852YMXAX-2.5/NOPB | 500kHz switching frequency; higher inductance (10–15µH) and larger output capacitance (100–220µF) required | Better light-load efficiency below 100mA; suited for thermally constrained but space-tolerant designs | Select when board area is less critical than standby power or EMI filtering simplicity |
| TPS62231DRVR | 3MHz switching, 0.6V–5.5V adjustable output, 0.65µA quiescent current, no split-rail support | Higher frequency enables smaller passives but lacks AVIN/PVIN separation for mixed-signal isolation | Select for ultra-low-IQ battery apps where 2.5V is set via external resistors and thermal pad grounding is simplified |
Compared with LM2852YMXAX-2.5/NOPB, the LM2852XMXAX-2.5/NOPB trades slightly lower light-load efficiency for 3× higher frequency, enabling 60% smaller magnetics. Versus TPS62231DRVR, it offers superior noise isolation via split-rail operation but requires fixed-output configuration and higher minimum load for stability.
Availability
LM2852XMXAX-2.5/NOPB is available at Aetrix Electronics and suitable for portable computing, FPGA power delivery, broadband networking infrastructure, and industrial sensor node designs requiring stable component supply across long production lifecycles.
Supply support for LM2852XMXAX-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 leader specializing in analog and embedded processing technologies, with decades of expertise in power management ICs.
The LM2852 product line delivers highly integrated synchronous buck regulators targeting space-constrained, high-efficiency point-of-load applications in computing, communications, and industrial systems.
FAQ
What is the switching frequency of the LM2852XMXAX-2.5/NOPB?
The LM2852XMXAX-2.5/NOPB operates at a nominal switching frequency of 1.5MHz, with typical variation from 1050kHz to 1825kHz across temperature and input voltage. This high-frequency operation allows use of smaller inductors (e.g., 6.8µH) and ceramic output capacitors, reducing overall solution size compared to 500kHz alternatives like the LM2852YMXAX-2.5/NOPB. The LM2852XMXAX-2.5/NOPB datasheet specifies this frequency as a key differentiator from the Y-version.
Does the LM2852XMXAX-2.5/NOPB require external compensation components?
No, the LM2852XMXAX-2.5/NOPB integrates a complete type-three compensation network internally, eliminating the need for external resistors or capacitors in the feedback loop. This simplifies design, reduces bill-of-materials count, and improves manufacturing yield. The internal compensation is optimized for the recommended output filter ranges (e.g., 6.8–10µH inductors and 68–120µF capacitors for 2.5V output), as specified in the LM2852XMXAX-2.5/NOPB datasheet.
What is the output voltage tolerance of the LM2852XMXAX-2.5/NOPB over temperature?
The LM2852XMXAX-2.5/NOPB has a guaranteed output voltage tolerance of ±2.25% over the full operating junction temperature range (–40°C to 125°C), corresponding to 2.4437V to 2.5563V at 25°C. This tight tolerance is factory-programmed and does not require external resistor dividers. The specification is verified per the LM2852XMXAX-2.5/NOPB electrical characteristics table and applies under all recommended operating conditions including line and load regulation.
How does the split-rail operation work on the LM2852XMXAX-2.5/NOPB?
The LM2852XMXAX-2.5/NOPB supports split-rail operation by separating AVIN (pin 1, logic bias supply) from PVIN (pins 6–7, power FET supply). AVIN powers the control circuitry and must be ≥2.85V and ≥PVIN; PVIN supplies the internal MOSFETs and determines inductor sizing. This architecture isolates noise-sensitive analog blocks from high-current switching paths, improving regulation accuracy-especially critical in mixed-signal applications using the LM2852XMXAX-2.5/NOPB.
What thermal performance can be expected from the LM2852XMXAX-2.5/NOPB in HTSSOP-14 package?
The LM2852XMXAX-2.5/NOPB in HTSSOP-14 package has a junction-to-ambient thermal resistance (RθJA) of 39.2°C/W under standard JEDEC test conditions. With its exposed thermal pad connected to a solid PGND plane, it can dissipate over 1W continuously at room temperature without exceeding 125°C junction limit. Thermal metrics including RθJC(bot) = 1.7°C/W confirm effective heat transfer through the bottom thermal pad, as documented in the LM2852XMXAX-2.5/NOPB thermal information section.
LM2852XMXAX-2.5/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):
- 2.5V
- 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-2.5/NOPB FAQ
1.How can I place an order for LM2852XMXAX-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2852XMXAX-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 LM2852XMXAX-2.5/NOPB reliable?
The price and inventory of LM2852XMXAX-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 LM2852XMXAX-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM2852XMXAX-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852XMXAX-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2852XMXAX-2.5/NOPB?
LM2852XMXAX-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2852XMXAX-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 LM2852XMXAX-2.5/NOPB?
For technical support, including LM2852XMXAX-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852XMXAX-2.5/NOPB requirements.
6.How does Aetrix verify that LM2852XMXAX-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2852XMXAX-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 LM2852XMXAX-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM2852XMXAX-2.5/NOPB?
All LM2852XMXAX-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2852XMXAX-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 LM2852XMXAX-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM2852XMXAX-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2852XMXAX-2.5/NOPB Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
