My Inquiry
My Account
Texas Instruments LM2852XMXAX-1.2/NOPB
- Part No.:
- LM2852XMXAX-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2852XMXAX-1.2/NOPB.pdf
- Description:
- IC REG BUCK 1.2V 2A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,206
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2852XMXAX-1.2/NOPB from Texas Instruments is a 2A synchronous buck regulator with fixed 1.2V output, 1.5MHz switching frequency, input voltage range of 2.85V–5.5V, internal 60mΩ PFET/NFET switches, and voltage-mode control. It delivers high-efficiency point-of-load regulation for FPGA core supplies in portable computing and broadband infrastructure.
For engineers reviewing the LM2852XMXAX-1.2/NOPB datasheet, LM2852XMXAX-1.2/NOPB pinout, LM2852XMXAX-1.2/NOPB application, or LM2852XMXAX-1.2/NOPB equivalent, key selection criteria include its 1.5MHz operation enabling compact filter design, factory-programmed 1.2V output with ±2.7% tolerance at 25°C, HTSSOP-14 thermal performance (RθJA = 39.2°C/W), and split-rail AVIN/PVIN capability for optimized logic and power domain separation.
Technical Context
The LM2852XMXAX-1.2/NOPB implements voltage-mode PWM control with integrated type-three compensation, eliminating external compensation components. Its 1.5MHz oscillator provides stable switching across −40°C to 125°C junction temperature, with peak current limit set to 2.75–4.95A depending on temperature.
Split-rail architecture separates AVIN (2.85–5.5V logic bias) from PVIN (1.5–5.5V power FET supply), enabling independent optimization of control and power paths. Switch node protection prevents shoot-through during light-load conditions, and soft-start is controlled via an external capacitor (1–50nF) tied to the SS pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±2.7% (25°C), ±3.0% (−40°C to 125°C) |
| Max Output Current | 2A continuous load capability without derating at TJ ≤ 125°C |
| Switching Frequency | 1.5MHz nominal (1050–1825kHz over temperature), enabling <10µH inductors |
| Input Voltage Range | 2.85V–5.5V on AVIN; PVIN supports 1.5V–5.5V (PVIN ≤ AVIN) |
| Efficiency | Up to 94% at 1.2V/1A with 3.3V input; >88% at full 2A load |
| Quiescent Current | 0.85mA typical (non-switching), 10µA shutdown current |
| Thermal Resistance | RθJA = 39.2°C/W (HTSSOP-14), RθJC(bot) = 1.7°C/W for PCB heatsinking |
Pinout & Package
LM2852XMXAX-1.2/NOPB uses the 14-pin HTSSOP package (5.00mm × 4.40mm) 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 ≥ PVIN and within 2.85–5.5V |
| EN (Pin 2) | Enable control | Internally pulled up; tie to GND to disable; 75% AVIN threshold for enable |
| SGND (Pin 3) | Signal ground reference | Separate from PGND to minimize noise coupling into feedback path |
| SS (Pin 4) | Soft-start timing | Connects to 1–50nF capacitor; sets output ramp time and fault recovery behavior |
| 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 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 inductor; carries high di/dt; requires short, wide trace to minimize EMI |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-mode PWM control | Enables predictable loop response and simplifies stability analysis vs. current-mode |
| Integrated type-three compensation | Eliminates external compensation network; reduces BOM count and layout sensitivity |
| 1.5MHz fixed-frequency operation | Supports ultra-compact LC filters (e.g., 1µH + 10µF ceramic) for space-constrained designs |
| Split-rail AVIN/PVIN architecture | Allows independent optimization of logic supply (e.g., 3.3V) and power rail (e.g., 5V) |
| Internal 60mΩ PFET/NFET switches | Reduces conduction loss and eliminates external MOSFETs and drivers |
Applications
| Portable Computing Core Supply | FPGA I/O Bank Regulation |
|---|---|
Use Scenario: Powering ARM Cortex-A series SoC cores in thin-and-light notebooks requiring fast transient response and low quiescent current. IC Role / Device Role / Timing Role: Primary 1.2V core regulator delivering up to 2A with <10µs load-step response. Use Value: Enables 1.5MHz operation to shrink output filter size by >60% vs. 500kHz alternatives while maintaining >92% efficiency at 1.5A. | Use Scenario: Providing clean, tightly regulated 1.2V to FPGA I/O banks in reconfigurable networking equipment. IC Role / Device Role / Timing Role: Local point-of-load converter placed adjacent to FPGA package for minimal IR drop. Use Value: Split-rail AVIN/PVIN allows separate 3.3V logic bias and 5V power rail, reducing noise coupling into sensitive I/O signaling. |
| Broadband Access Node PSU | Industrial Edge Controller Power |
Use Scenario: Generating 1.2V for Ethernet PHYs and packet processors in DSLAM and GPON line cards. IC Role / Device Role / Timing Role: Secondary regulator fed from intermediate 3.3V rail, operating continuously under 40–85°C ambient. Use Value: RθJC(bot) = 1.7°C/W enables direct thermal transfer to PCB copper, sustaining 2A output without heatsink at 70°C ambient. | Use Scenario: Powering real-time microcontroller cores in DIN-rail mounted PLC modules with extended temperature requirements. IC Role / Device Role / Timing Role: Main 1.2V supply for ARM Cortex-M7 MCU with watchdog-triggered soft-start recovery. Use Value: Internal UVLO (2.85V rising) and thermal shutdown (165°C) ensure safe operation during brownout or enclosure overheating events. |
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-1.2/NOPB | 500kHz switching frequency; higher inductance required (10–15µH); lower light-load efficiency | Better suited for cost-sensitive, lower-EMI applications where board space is less constrained | Select when EMI filtering priority outweighs size reduction; not pin-compatible due to different frequency calibration |
| TPS62231DRVR | 1.8–6.0V input; 1.2V fixed output; 3.6MHz switching; 0.6A max current; smaller 6-pin WSON package | Targeted at sub-1A loads in ultra-compact consumer electronics, not industrial 2A applications | Choose only for <1A use cases requiring minimal footprint; insufficient current capability for LM2852XMXAX-1.2/NOPB's 2A rating |
Compared with LM2852YMXAX-1.2/NOPB and TPS62231DRVR, the LM2852XMXAX-1.2/NOPB uniquely balances 2A capacity, 1.5MHz operation, and HTSSOP thermal performance-making it optimal for space-limited industrial and telecom point-of-load designs where both current and frequency matter.
Availability
LM2852XMXAX-1.2/NOPB is available at Aetrix Electronics and suitable for portable computing, FPGA power delivery, and broadband infrastructure applications requiring stable component supply, long-term manufacturability, and guaranteed TI production continuity.
Supply support for LM2852XMXAX-1.2/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 high-density point-of-load conversion in FPGA, ASIC, and SoC applications where efficiency, thermal performance, and minimal external component count are critical.
FAQ
What is the output voltage tolerance of the LM2852XMXAX-1.2/NOPB over temperature?
The LM2852XMXAX-1.2/NOPB has a factory-programmed 1.2V output with ±2.7% tolerance at TJ = 25°C and ±3.0% over the full −40°C to 125°C junction temperature range, as specified in the Electrical Characteristics table (Section 6.5). This tolerance includes initial accuracy, line regulation (0.6%), and load regulation (8mV/A).
Does the LM2852XMXAX-1.2/NOPB require external compensation components?
No, the LM2852XMXAX-1.2/NOPB integrates a complete type-three compensation network internally. This eliminates the need for external resistors or capacitors in the feedback loop, reducing BOM count and layout sensitivity while ensuring stability with recommended output filter values (e.g., 1µH inductor + 10µF ceramic capacitor for 1.5MHz operation).
Can the LM2852XMXAX-1.2/NOPB operate with different voltages on AVIN and PVIN pins?
Yes, the LM2852XMXAX-1.2/NOPB supports true split-rail operation: AVIN (2.85–5.5V) powers the control logic, while PVIN (1.5–5.5V) supplies the power FETs. PVIN must always be ≤ AVIN. This allows optimizing noise isolation-for example, using a clean 3.3V AVIN rail and a noisier 5V PVIN rail-without compromising regulation accuracy.
What is the maximum achievable efficiency of the LM2852XMXAX-1.2/NOPB at 2A load?
At 2A load and 3.3V input, the LM2852XMXAX-1.2/NOPB achieves ≥88% efficiency (per Figure 6 in the datasheet). Peak efficiency reaches 94% at 1A/3.3V input. Efficiency remains >84% even at 10A-equivalent ripple conditions due to low RDS(ON) (75mΩ PFET / 55mΩ NFET at 25°C) and optimized 1.5MHz gate drive.
Is the LM2852XMXAX-1.2/NOPB pin-compatible with other LM2852 variants?
No-LM2852XMXAX-1.2/NOPB (1.5MHz) and LM2852YMXAX-1.2/NOPB (500kHz) share identical pinout and package (HTSSOP-14), but differ in internal oscillator calibration and current limit thresholds. They are not functionally interchangeable without circuit redesign, particularly in soft-start timing and inductor selection.
LM2852XMXAX-1.2/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):
- 1.2V
- 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-1.2/NOPB FAQ
1.How can I place an order for LM2852XMXAX-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2852XMXAX-1.2/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-1.2/NOPB reliable?
The price and inventory of LM2852XMXAX-1.2/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-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM2852XMXAX-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852XMXAX-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2852XMXAX-1.2/NOPB?
LM2852XMXAX-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2852XMXAX-1.2/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-1.2/NOPB?
For technical support, including LM2852XMXAX-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852XMXAX-1.2/NOPB requirements.
6.How does Aetrix verify that LM2852XMXAX-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2852XMXAX-1.2/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-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM2852XMXAX-1.2/NOPB?
All LM2852XMXAX-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2852XMXAX-1.2/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-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM2852XMXAX-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2852XMXAX-1.2/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…
