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

Texas Instruments LM2852YMXAX-1.0/NOPB

Name: LM2852YMXAX-1.0/NOPB
Brand: Texas Instruments
SKU: LM2852YMXAX-1.0/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM2852YMXAX-1.0/NOPB

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - DC DC Switching Regulators

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

Datasheet:: LM2852YMXAX-1.0/NOPB.pdf

Description:: IC REG BUCK 1V 2A 14HTSSOP

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Product details

Overview

LM2852YMXAX-1.0/NOPB from Texas Instruments is a 2 A, 500 kHz synchronous buck regulator with factory-set 1.0 V output, 2.85–5.5 V input range, internal 60 mΩ MOSFETs, and voltage-mode control. It delivers precise point-of-load regulation for FPGA core rails and low-voltage embedded processors.

For engineers reviewing the LM2852YMXAX-1.0/NOPB datasheet, LM2852YMXAX-1.0/NOPB pinout, LM2852YMXAX-1.0/NOPB application, or LM2852YMXAX-1.0/NOPB equivalent, key selection criteria include switching frequency (500 kHz), thermal performance in HTSSOP-14, soft-start programmability via external capacitor, and split-rail AVIN/PVIN operation for optimized efficiency in space-constrained designs.

Technical Context

The LM2852YMXAX-1.0/NOPB implements voltage-mode PWM control with internal Type-III compensation, eliminating external compensation components. Its dual-rail architecture separates AVIN (logic bias) from PVIN (power FET supply), enabling independent optimization of control stability and power-stage efficiency.

Switch node protection logic disables switching under no-load or light-load conditions to prevent erratic behavior, while integrated UVLO (2.85 V rising threshold) and thermal shutdown (165 °C) ensure robust operation across –40 °C to 125 °C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.0 V ±2.25% (factory EEPROM-programmed; ensures stable core rail without external feedback resistors)
Max Output Current	2 A continuous (supports high-current FPGA/DSP cores without derating at 25 °C)
Input Voltage Range	2.85 V to 5.5 V (covers single-cell Li-ion, USB, and 3.3 V/5 V system rails)
Switching Frequency	500 kHz (LM2852Y variant; enables compact 10–15 µH inductors and reduces EMI compared to 1.5 MHz variants)
Efficiency @ 1 A	92% typical at VIN = 3.3 V, VOUT = 1.0 V (minimizes thermal load in dense PCB layouts)
Quiescent Current	0.85 mA typical (non-switching), 10 µA shutdown (extends battery life in portable systems)
Thermal Resistance	R_θJA = 39.2 °C/W (HTSSOP-14 with exposed pad; requires minimal copper area for full 2 A operation)

Pinout & Package

LM2852YMXAX-1.0/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 ≥ PVIN and within 2.85–5.5 V; decoupling critical for noise immunity
EN (Pin 2)	Enable control	Internally pulled up; tie to GND to disable; 75% AVIN threshold ensures clean startup sequencing
SGND (Pin 3)	Signal ground reference	Separate from PGND to isolate analog feedback path; connects to SNS resistor divider ground
SS (Pin 4)	Soft-start timing	Accepts 1–50 nF capacitor; sets controlled ramp-up time (e.g., 2.7 nF ≈ 3 ms) to avoid inrush current
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; must be ≤ AVIN; high-current path requiring short, wide traces
SNS (Pin 14)	Output voltage sense	High-impedance feedback node; connect directly to load for accurate regulation; immune to trace IR drop
PGND (Pins 10, 11)	Power ground return	Carries switched current; connect to thermal pad and bulk ground plane to minimize noise and losses
SW (Pins 8, 9)	Switch node	Connects to inductor; high dv/dt node requiring minimized loop area to reduce EMI radiation

Key Features

Feature	Design Value
Internal Type-III compensation	Eliminates 4–5 external compensation components; guarantees stability with recommended L/C ranges (e.g., 10–15 µH / 100–120 µF)
Split-rail AVIN/PVIN operation	Enables independent optimization: AVIN powers control circuitry (low noise), PVIN powers switches (high current); improves PSRR and efficiency
Factory-programmed output	1.0 V set permanently in EEPROM; no external resistors needed-reduces BOM count and layout area for fixed-core applications
Switch node protection	Prevents false triggering during no-load startup by disabling switching until load is detected; avoids output overshoot and instability
Exposed-pad HTSSOP-14	Thermal pad lowers R_θJC(bot) to 1.7 °C/W; enables 2 A operation with ≤25 °C rise over ambient using standard 2-oz copper

Applications

Low-Voltage FPGA Core Supply	Portable SSD Controller Rail
Use Scenario: Powers 1.0 V core of Xilinx Artix-7 FPGA in battery-powered edge AI inference module. IC Role / Device Role / Timing Role: Primary DC-DC converter delivering regulated 1.0 V at up to 2 A with <±2.25% accuracy and fast transient response. Use Value: Internal compensation and fixed 1.0 V output eliminate feedback resistors and tuning effort, reducing design cycle time by ~3 days.	Use Scenario: Supplies 1.0 V I/O rail for NVMe SSD controller in ultrabook platform with strict thermal envelope. IC Role / Device Role / Timing Role: High-efficiency buck regulator operating at 500 kHz to balance EMI and inductor size in thin-profile motherboard. Use Value: 92% peak efficiency at 1 A and 39.2 °C/W R_θJA enable full 2 A load without heatsink in 10 mm² footprint.
Industrial PLC Digital I/O Module	Medical Wearable Sensor Hub
Use Scenario: Generates isolated 1.0 V supply for ARM Cortex-M7 microcontroller in DIN-rail mounted PLC with 24 V input. IC Role / Device Role / Timing Role: Input-filtered buck stage accepting 2.85–5.5 V after pre-regulation; supports wide-temp operation (–40 °C to 125 °C). Use Value: UVLO (2.85 V) and thermal shutdown (165 °C) ensure fail-safe operation during brownouts or enclosure overheating.	Use Scenario: Powers ultra-low-noise analog front-end and BLE SoC in FDA-cleared wearable ECG patch. IC Role / Device Role / Timing Role: Low-quiescent (0.85 mA) buck regulator enabling >72-hour battery life on coin cell; soft-start prevents sensor reset during wake-up. Use Value: SS pin programmability (2.7 nF → 3 ms ramp) eliminates external sequencer IC, saving 0.5 mm² board area.

Low-Voltage FPGA Core Supply

Portable SSD Controller Rail

Use Scenario: Powers 1.0 V core of Xilinx Artix-7 FPGA in battery-powered edge AI inference module.

IC Role / Device Role / Timing Role: Primary DC-DC converter delivering regulated 1.0 V at up to 2 A with <±2.25% accuracy and fast transient response.

Use Value: Internal compensation and fixed 1.0 V output eliminate feedback resistors and tuning effort, reducing design cycle time by ~3 days.

Use Scenario: Supplies 1.0 V I/O rail for NVMe SSD controller in ultrabook platform with strict thermal envelope.

IC Role / Device Role / Timing Role: High-efficiency buck regulator operating at 500 kHz to balance EMI and inductor size in thin-profile motherboard.

Use Value: 92% peak efficiency at 1 A and 39.2 °C/W R_θJA enable full 2 A load without heatsink in 10 mm² footprint.

Industrial PLC Digital I/O Module

Medical Wearable Sensor Hub

Use Scenario: Generates isolated 1.0 V supply for ARM Cortex-M7 microcontroller in DIN-rail mounted PLC with 24 V input.

IC Role / Device Role / Timing Role: Input-filtered buck stage accepting 2.85–5.5 V after pre-regulation; supports wide-temp operation (–40 °C to 125 °C).

Use Value: UVLO (2.85 V) and thermal shutdown (165 °C) ensure fail-safe operation during brownouts or enclosure overheating.

Use Scenario: Powers ultra-low-noise analog front-end and BLE SoC in FDA-cleared wearable ECG patch.

IC Role / Device Role / Timing Role: Low-quiescent (0.85 mA) buck regulator enabling >72-hour battery life on coin cell; soft-start prevents sensor reset during wake-up.

Use Value: SS pin programmability (2.7 nF → 3 ms ramp) eliminates external sequencer IC, saving 0.5 mm² board area.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS54202DDCR	400 kHz switching, 2 A, adjustable output (0.6–6 V) via external resistors; no factory-programmed voltage	Requires feedback network; better for multi-rail systems needing flexibility; lacks split-rail AVIN/PVIN	Select when output voltage may change across product variants or when tighter line regulation (<0.2%) is required at 25 °C
MP2315GJ-Z	2 A, 500 kHz, fixed 1.0 V option available; no internal compensation; requires external RC network	Higher component count (6–8 extra passives); smaller QFN-10 package but higher R_θJA (60 °C/W)	Select when board space is more constrained than BOM cost, and design team has proven experience with external compensation tuning

Compared with TPS54202DDCR and MP2315GJ-Z, LM2852YMXAX-1.0/NOPB offers lowest system-level design effort due to factory-fixed 1.0 V, integrated compensation, and split-rail operation-reducing passive count by ≥5 parts and simplifying thermal layout via exposed-pad HTSSOP.

Availability

LM2852YMXAX-1.0/NOPB is available at Aetrix Electronics and suitable for FPGA core supplies, portable SSD controllers, and industrial PLC digital I/O modules requiring stable component supply with guaranteed long-term manufacturability.

Supply support for LM2852YMXAX-1.0/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 leader specializing in analog and embedded processing technologies, with decades of power management innovation.

The LM2852 product line delivers highly integrated, thermally optimized synchronous buck regulators for space- and efficiency-critical point-of-load applications in computing, communications, and portable electronics.

FAQ

What is the output voltage tolerance of the LM2852YMXAX-1.0/NOPB?

The LM2852YMXAX-1.0/NOPB has a factory-programmed 1.0 V output with ±2.25% tolerance (0.9775 V to 1.0225 V) over –40 °C to 125 °C junction temperature. This tight tolerance is guaranteed by TI's EEPROM calibration and eliminates need for external feedback trimming in LM2852YMXAX-1.0/NOPB designs.

Does the LM2852YMXAX-1.0/NOPB require external compensation components?

No, the LM2852YMXAX-1.0/NOPB integrates a complete Type-III compensation network internally. This eliminates four to five external resistors and capacitors typically needed in buck controllers, reducing BOM count and layout complexity while ensuring stability with recommended inductor/capacitor values per TI's datasheet Table 1.

Can the LM2852YMXAX-1.0/NOPB operate with separate AVIN and PVIN supplies?

Yes, the LM2852YMXAX-1.0/NOPB supports true split-rail operation: AVIN (Pin 1) powers the control logic and must be ≥ PVIN (Pins 6/7), which powers the internal MOSFETs. This allows optimizing noise-sensitive logic supply independently from high-current power rail-critical for LM2852YMXAX-1.0/NOPB applications in mixed-signal systems.

What is the recommended soft-start capacitor value for the LM2852YMXAX-1.0/NOPB?

Texas Instruments recommends a 2.7 nF ceramic capacitor on the SS pin (Pin 4) for the LM2852YMXAX-1.0/NOPB to achieve ~3 ms startup time. The SS pin accepts 1–50 nF; values outside this range risk unstable startup or excessive delay. This capacitor directly controls the DAC-charged reference ramp rate in LM2852YMXAX-1.0/NOPB.

How does the LM2852YMXAX-1.0/NOPB handle thermal overload?

The LM2852YMXAX-1.0/NOPB activates thermal shutdown at 165 °C junction temperature with 10 °C hysteresis, latching off until die cools to 155 °C. This protects the device during sustained overload or poor heatsinking. The exposed-pad HTSSOP package provides R_θJC(bot) = 1.7 °C/W, enabling rapid heat transfer to PCB ground in LM2852YMXAX-1.0/NOPB implementations.

LM2852YMXAX-1.0/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):: 1V

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

LM2852YMXAX-1.0/NOPB FAQ

1.How can I place an order for LM2852YMXAX-1.0/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LM2852YMXAX-1.0/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 LM2852YMXAX-1.0/NOPB reliable?

The price and inventory of LM2852YMXAX-1.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2852YMXAX-1.0/NOPB is usually 5 days.

3.What payment methods are accepted for LM2852YMXAX-1.0/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852YMXAX-1.0/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM2852YMXAX-1.0/NOPB?

LM2852YMXAX-1.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM2852YMXAX-1.0/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 LM2852YMXAX-1.0/NOPB?

For technical support, including LM2852YMXAX-1.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852YMXAX-1.0/NOPB requirements.

6.How does Aetrix verify that LM2852YMXAX-1.0/NOPB is sourced from the original manufacturer or authorized distributors?

All LM2852YMXAX-1.0/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 LM2852YMXAX-1.0/NOPB meets industry standards.

7.What is the process for return or replacement of LM2852YMXAX-1.0/NOPB?

All LM2852YMXAX-1.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2852YMXAX-1.0/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 LM2852YMXAX-1.0/NOPB part is unused and in its original packaging.

Return procedure for LM2852YMXAX-1.0/NOPB:

1.Submit a request within 90 days.

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

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