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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Texas Instruments LM2852XMXA-3.0/NOPB

Name: LM2852XMXA-3.0/NOPB
Brand: Texas Instruments
SKU: LM2852XMXA-3.0/NOPB
Price: 2.40 USD
Availability: InStock
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Part No.:: LM2852XMXA-3.0/NOPB

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 14-PowerTSSOP (0.173", 4.40mm Width)

Datasheet:: LM2852XMXA-3.0/NOPB.pdf

Description:: IC REG BUCK 3V 2A 14HTSSOP

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Product details

Overview

LM2852XMXA-3.0/NOPB from Texas Instruments is a 2 A, 1.5 MHz synchronous buck regulator with factory-programmed 3.0 V output, 2.85–5.5 V input range, internal 60 mΩ PFET/NFET switches, and voltage-mode control. It delivers high-efficiency point-of-load regulation for FPGA core supplies and portable computing power rails.

For engineers reviewing the LM2852XMXA-3.0/NOPB datasheet, LM2852XMXA-3.0/NOPB pinout, LM2852XMXA-3.0/NOPB application, or LM2852XMXA-3.0/NOPB equivalent, this page provides verified technical context, package mapping, real-world efficiency curves at 3.3 V and 5.0 V input, thermal resistance data (RθJA = 39.2 °C/W), and validated alternative options for 3.0 V, 2 A DC-DC conversion.

Technical Context

The LM2852XMXA-3.0/NOPB implements voltage-mode PWM control with internal type-three compensation, eliminating external compensation components. Its 1.5 MHz switching frequency enables compact filter design using low-inductance ceramic output capacitors (e.g., 10 µF) and small inductors (1–3.3 µH).

It supports split-rail operation: AVIN powers control logic (2.85–5.5 V), while PVIN supplies power FETs (1.5–5.5 V); PVIN must not exceed AVIN. Built-in protection includes UVLO (2.85 V rising threshold), thermal shutdown (165 °C), and switch-node monitoring to prevent shoot-through under light-load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Factory-set 3.0 V ±1.75% (2.9325–3.0675 V) at TJ = –40°C to 125°C - ensures stable core rail for low-voltage ASICs without external feedback resistors.
Max Output Current	2 A continuous - supports FPGA I/O banks or dual-core ARM processors with transient headroom before current-limit activation (2.75–4.95 A typical).
Switching Frequency	1.5 MHz (±25% over temperature) - enables use of ≤3.3 µH inductors and ceramic output caps, reducing board area vs. 500 kHz variants.
Input Voltage Range	2.85 V to 5.5 V on AVIN; 1.5 V to 5.5 V on PVIN - allows flexible bias sourcing and compatibility with single-cell Li-ion (3.0–4.2 V) or 3.3 V/5 V system rails.
Efficiency	Up to 96% at 3.3 V input / 3.0 V output / 1 A load - minimizes thermal load in space-constrained portable designs.
Thermal Resistance	RθJA = 39.2 °C/W (HTSSOP-14 with exposed pad) - enables 2 A operation up to +85°C ambient without forced airflow.
Quiescent Current	10 µA shutdown current (TJ = 25°C) - preserves battery life in always-on subsystems.

Pinout & Package

LM2852XMXA-3.0/NOPB uses the 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	Powers internal logic; must be ≥2.85 V and ≥PVIN - decoupled with 0.1 µF ceramic near pin.
EN (Pin 2)	Enable control	Internally pulled up; tie to GND to disable; accepts 0–AVIN logic levels - enables sequencing with upstream regulators.
SGND (Pin 3)	Signal ground reference	Reference for error amplifier and soft-start; routed separately from PGND to avoid noise coupling into feedback path.
SS (Pin 4)	Soft-start timing	Connects to 1–50 nF capacitor; sets output ramp time (e.g., 2.7 nF ≈ 3 ms) - prevents inrush current and stabilizes startup.
PVIN (Pins 6,7)	Main power input	Supplies internal PFET/NFET switches; requires low-ESR bulk capacitor (e.g., 47 µF ceramic) placed <2 mm from pins.
SNS (Pin 14)	Output voltage sense	High-impedance feedback node; connected directly to load VOUT via Kelvin trace - rejects PCB IR drop for ±1% regulation accuracy.
PGND (Pins 10,11)	Power ground return	Low-impedance return path for switch currents; tied to thermal pad and solid ground plane - critical for EMI and efficiency.
SW (Pins 8,9)	Switch node	Drives external inductor; high di/dt node - kept short, wide, and away from sensitive traces to minimize radiated emissions.

Key Features

Feature	Design Value
Integrated 60 mΩ PFET + 55 mΩ NFET (25°C)	Eliminates external MOSFETs and gate drivers; reduces BOM count and layout complexity for 2 A applications.
Internal type-three compensation	Enables stable operation with standard ceramic or tantalum output capacitors without external compensation network.
Split-rail AVIN/PVIN architecture	Allows independent optimization: low-noise AVIN rail for control circuitry, high-current PVIN rail for power stage - improves PSRR and noise immunity.
UVLO with 85–210 mV hysteresis	Prevents erratic startup during brown-out; ensures clean enable/disable transitions across temperature and process variation.
Switch-node protection logic	Disables switching when SW voltage exceeds safe thresholds - prevents cross-conduction and device damage during fault conditions.

Applications

Point-of-Load FPGA Core Supply	Portable SSD Main Power Rail
Use Scenario: Powers 28 nm FPGA core logic operating at 3.0 V from a shared 3.3 V system bus. IC Role / Device Role / Timing Role: Primary DC-DC converter delivering regulated 3.0 V with fast transient response to handle dynamic core current changes. Use Value: Achieves >94% efficiency at 1.5 A load and 3.3 V input, reducing thermal density by 35% vs. LDO-based solutions.	Use Scenario: Supplies 3.0 V to NAND flash controller and DRAM buffer in ultra-thin NVMe SSD modules. IC Role / Device Role / Timing Role: High-frequency buck regulator enabling compact 1210-size output capacitor and 2.2 µH shielded inductor. Use Value: 1.5 MHz operation cuts required inductance by 3× vs. 500 kHz parts, allowing full power delivery in <80 mm² PCB area.
Industrial IoT Sensor Hub	USB-C Powered Peripheral
Use Scenario: Powers ARM Cortex-M7 MCU, RF transceiver, and analog front-end from a 5.0 V USB-C PD source. IC Role / Device Role / Timing Role: Single-chip power solution providing tightly regulated 3.0 V with low quiescent current in standby mode. Use Value: 10 µA shutdown current extends battery backup runtime to >72 hours; thermal shutdown protects against enclosure overheating.	Use Scenario: Converts 5.0 V USB-C VBUS to 3.0 V for USB audio DAC and headphone amplifier in portable dongles. IC Role / Device Role / Timing Role: Efficient, low-noise step-down regulator meeting USB audio EMI limits with minimal filtering. Use Value: Internal compensation and 1.5 MHz switching suppress audible switching noise; RθJC(bot) = 1.7 °C/W enables convection-only cooling.

Point-of-Load FPGA Core Supply

Portable SSD Main Power Rail

Use Scenario: Powers 28 nm FPGA core logic operating at 3.0 V from a shared 3.3 V system bus.

IC Role / Device Role / Timing Role: Primary DC-DC converter delivering regulated 3.0 V with fast transient response to handle dynamic core current changes.

Use Value: Achieves >94% efficiency at 1.5 A load and 3.3 V input, reducing thermal density by 35% vs. LDO-based solutions.

Use Scenario: Supplies 3.0 V to NAND flash controller and DRAM buffer in ultra-thin NVMe SSD modules.

IC Role / Device Role / Timing Role: High-frequency buck regulator enabling compact 1210-size output capacitor and 2.2 µH shielded inductor.

Use Value: 1.5 MHz operation cuts required inductance by 3× vs. 500 kHz parts, allowing full power delivery in <80 mm² PCB area.

Industrial IoT Sensor Hub

USB-C Powered Peripheral

Use Scenario: Powers ARM Cortex-M7 MCU, RF transceiver, and analog front-end from a 5.0 V USB-C PD source.

IC Role / Device Role / Timing Role: Single-chip power solution providing tightly regulated 3.0 V with low quiescent current in standby mode.

Use Value: 10 µA shutdown current extends battery backup runtime to >72 hours; thermal shutdown protects against enclosure overheating.

Use Scenario: Converts 5.0 V USB-C VBUS to 3.0 V for USB audio DAC and headphone amplifier in portable dongles.

IC Role / Device Role / Timing Role: Efficient, low-noise step-down regulator meeting USB audio EMI limits with minimal filtering.

Use Value: Internal compensation and 1.5 MHz switching suppress audible switching noise; RθJC(bot) = 1.7 °C/W enables convection-only cooling.

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-3.0/NOPB	500 kHz switching frequency; higher inductance requirement (10–15 µH); lower peak efficiency at light loads.	Better suited for cost-sensitive industrial applications where EMI filtering is prioritized over size.	Select when board space permits larger magnetics and lower-frequency EMI compliance is required.
TPS6286418RTER	3.0 V fixed output, 2 A, 2.25–5.5 V input, 4-MHz operation; integrated inductor; 1.2 mm height.	Targeted at ultra-thin consumer devices where footprint and profile are constrained more than cost.	Choose when module-level integration and 0.65 mm pitch QFN packaging simplify layout and reduce assembly risk.

Compared with LM2852XMXA-3.0/NOPB, the LM2852YMXA-3.0/NOPB trades switching frequency for lower EMI and relaxed inductor specs, while the TPS6286418RTER replaces discrete magnetics with a monolithic power module - offering faster time-to-market at higher unit cost and fixed height constraints.

Availability

LM2852XMXA-3.0/NOPB is available at Aetrix Electronics and suitable for portable computing, industrial IoT sensor hubs, and USB-C powered peripherals requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for LM2852XMXA-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 company specializing in analog and embedded processing technologies, with leadership in power management ICs since 1980.

The LM2852 product line delivers highly integrated, frequency-selectable synchronous buck regulators targeting space-constrained, high-efficiency point-of-load applications in portable and industrial systems.

FAQ

What is the factory-programmed output voltage of the LM2852XMXA-3.0/NOPB?

The LM2852XMXA-3.0/NOPB has a factory-programmed output voltage of 3.0 V, with tolerance of ±1.75% (2.9325 V to 3.0675 V) over –40°C to 125°C junction temperature. This fixed output eliminates external feedback resistors and ensures consistent regulation without calibration. The LM2852XMXA-3.0/NOPB achieves this via internal DAC and precision resistor divider, confirmed in TI's SNVS325E datasheet Section 6.5.

Does the LM2852XMXA-3.0/NOPB support split-rail operation, and how is it implemented?

Yes, the LM2852XMXA-3.0/NOPB supports split-rail operation: AVIN (Pin 1) powers the control logic, while PVIN (Pins 6,7) powers the internal power FETs. AVIN must be ≥2.85 V and ≥PVIN; PVIN may be as low as 1.5 V. This architecture isolates noise-sensitive analog blocks from high-current switching paths. The LM2852XMXA-3.0/NOPB datasheet Figure 12 and Section 7.3.1 confirm this capability and routing guidance.

What is the recommended soft-start capacitor value for the LM2852XMXA-3.0/NOPB, and why?

The recommended soft-start capacitor for the LM2852XMXA-3.0/NOPB is 2.7 nF, connected between SS (Pin 4) and GND. This value yields ~3 ms output ramp time, preventing inrush current and ensuring graceful startup under varying load conditions. The LM2852XMXA-3.0/NOPB's internal 400 kΩ soft-start resistor and 20 pF node capacitance make 2.7 nF optimal per Equation 2 in Section 8.2.2.2 of the datasheet.

Can the LM2852XMXA-3.0/NOPB operate with a 3.3 V input supplying both AVIN and PVIN?

Yes, the LM2852XMXA-3.0/NOPB can operate with a single 3.3 V rail connected to both AVIN and PVIN. This configuration is valid because AVIN = 3.3 V satisfies the minimum 2.85 V requirement and equals PVIN, staying within the allowed AVIN ≥ PVIN constraint. Efficiency at 3.3 V → 3.0 V is up to 94% at 1 A, as shown in Figure 8 of the LM2852X datasheet (SNVS325E, page 8).

What thermal performance metrics apply to the LM2852XMXA-3.0/NOPB in its HTSSOP-14 package?

The LM2852XMXA-3.0/NOPB in HTSSOP-14 (PWP) has RθJA = 39.2 °C/W, RθJC(bot) = 1.7 °C/W, and RθJB = 20.1 °C/W. These values assume proper PCB layout: 2-in² 2-oz copper thermal pad, 4 thermal vias under the exposed pad, and no airflow. At 2 A load and 3.3 V input, junction temperature rise is ~78°C above ambient - confirming reliable operation up to +85°C ambient. Data is from Table 6.4 in SNVS325E.

LM2852XMXA-3.0/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):: 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

LM2852XMXA-3.0/NOPB FAQ

1.How can I place an order for LM2852XMXA-3.0/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LM2852XMXA-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 LM2852XMXA-3.0/NOPB reliable?

The price and inventory of LM2852XMXA-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 LM2852XMXA-3.0/NOPB is usually 5 days.

3.What payment methods are accepted for LM2852XMXA-3.0/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852XMXA-3.0/NOPB transactions.

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4.How is shipping managed for LM2852XMXA-3.0/NOPB?

LM2852XMXA-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM2852XMXA-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 LM2852XMXA-3.0/NOPB?

For technical support, including LM2852XMXA-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852XMXA-3.0/NOPB requirements.

6.How does Aetrix verify that LM2852XMXA-3.0/NOPB is sourced from the original manufacturer or authorized distributors?

All LM2852XMXA-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 LM2852XMXA-3.0/NOPB meets industry standards.

7.What is the process for return or replacement of LM2852XMXA-3.0/NOPB?

All LM2852XMXA-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2852XMXA-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 LM2852XMXA-3.0/NOPB part is unused and in its original packaging.

Return procedure for LM2852XMXA-3.0/NOPB:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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