My Inquiry
My Account
Texas Instruments LM2852YMXA-3.3
- Part No.:
- LM2852YMXA-3.3
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2852YMXA-3.3.pdf
- Description:
- IC REG BUCK 3.3V 2A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,306
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2852YMXA-3.3 from Texas Instruments is a 2 A synchronous buck regulator with factory-programmed 3.3 V output, 500 kHz switching frequency, input voltage range of 2.85 V to 5.5 V, and integrated 60 mΩ PFET/NFET power switches-designed for point-of-load regulation in FPGA core supplies and portable computing power rails.
For engineers reviewing the LM2852YMXA-3.3 datasheet, LM2852YMXA-3.3 pinout, LM2852YMXA-3.3 application, or LM2852YMXA-3.3 equivalent, key selection criteria include output voltage accuracy (±1.9% at 3.3 V), thermal performance in HTSSOP-14 (RθJA = 39.2 °C/W), soft-start programmability (1–50 nF), and internal type-three compensation enabling minimal external components.
Technical Context
The LM2852YMXA-3.3 implements voltage-mode PWM control with internal type-three compensation, eliminating need for external loop compensation components. Its split-rail architecture separates AVIN (logic bias) from PVIN (power FET supply), supporting optimized input filtering and thermal management.
Switch node protection logic disables switching under no-load or light-load conditions until load demand triggers normal operation-ensuring safe startup and preventing unintended oscillation. UVLO threshold is 2.85 V (rising), with 85–210 mV hysteresis, and thermal shutdown activates at 165 °C with 10 °C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-set 3.3 V ±1.9% (3.226–3.374 V), verified across –40°C to 125°C junction temperature |
| Max Output Current | 2 A continuous load capability with internal current limit threshold of 2.25–3.65 A (–40°C to 125°C) |
| Switching Frequency | 500 kHz ±37.5% (325–625 kHz), stable over full temperature and input voltage range |
| Input Voltage Range | 2.85 V to 5.5 V on AVIN; PVIN must be ≤ AVIN and ≥1.5 V, enabling flexible split-rail operation |
| Power Switch RDS(on) | 75 mΩ PFET / 55 mΩ NFET at 25°C; rises to 140 mΩ / 120 mΩ at 125°C-directly impacts conduction loss and thermal design |
| Quiescent Current | 0.85 mA typical non-switching IQ; 10 µA shutdown current enables ultra-low-power standby modes |
| Soft-Start Range | Programmable via external capacitor (1–50 nF); 2.7 nF yields ~3 ms startup time-prevents inrush and ensures controlled rail sequencing |
Pinout & Package
The LM2852YMXA-3.3 is housed in an exposed-pad HTSSOP-14 package (5.00 mm × 4.40 mm), where the thermal pad must be soldered to a PCB ground plane for optimal thermal dissipation (RθJC(bot) = 1.7 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN (Pin 1) | Chip bias supply | Provides power to internal logic; may be supplied independently from PVIN for split-rail optimization |
| EN (Pin 2) | Enable control | Internally pulled up; tie to GND to disable; 75% AVIN threshold for high, 25% for low |
| SGND (Pin 3) | Signal ground reference | Separate from PGND to minimize noise coupling into error amplifier and feedback path |
| SS (Pin 4) | Soft-start timing | Connects to external capacitor (1–50 nF) to control output ramp rate and prevent inrush |
| NC (Pins 5, 12, 13) | No-connect | Must be left floating or tied to GND-no internal connection; not for thermal relief |
| PVIN (Pins 6, 7) | Power FET supply | Drives internal high-side/low-side MOSFETs; requires low-impedance local decoupling |
| SNS (Pin 14) | Output voltage sense | High-impedance feedback node; connect directly to load for accurate remote sensing |
| PGND (Pins 10, 11) | Power ground return | Carries high-frequency switch currents; must connect to dedicated low-inductance ground plane |
| SW (Pins 8, 9) | Switch node | Connects to output inductor; carries high di/dt; layout critical for EMI and efficiency |
Key Features
| Feature | Design Value |
|---|---|
| Internal Type-Three Compensation | Eliminates need for external compensation network-reduces BOM count and layout sensitivity while maintaining >45° phase margin across recommended L/C ranges |
| Split-Rail Operation (AVIN/PVIN) | Enables independent optimization of logic bias and power stage supply-improves efficiency when PVIN < AVIN (e.g., 3.3 V PVIN with 5 V AVIN) |
| Switch Node Protection Logic | Prevents uncontrolled switching during no-load or light-load conditions-avoids false triggering and improves system reliability during power-up sequencing |
| Factory-Programmed Output | Fixed 3.3 V output eliminates external resistor divider-guarantees accuracy without calibration and reduces footprint versus adjustable regulators |
| Exposed Thermal Pad (HTSSOP-14) | Enables direct thermal path to PCB ground plane-supports 2 A continuous operation at ambient up to 85°C without heatsink |
Applications
| FPGA Core Power Supply | Portable Computing Rail |
|---|---|
Use Scenario: Regulating 3.3 V supply for I/O banks or auxiliary logic in Xilinx Artix-7 or Intel Cyclone V FPGAs. IC Role / Device Role / Timing Role: Primary synchronous buck converter delivering stable 3.3 V at up to 2 A with fast transient response to dynamic core loading. Use Value: Factory-set 3.3 V eliminates trimming resistors; 500 kHz switching allows compact 10–15 µH inductors and 100 µF ceramic/tantalum output capacitors. | Use Scenario: Powering USB-C PD controller, display interface, or audio codec in thin-and-light notebooks or 2-in-1 tablets. IC Role / Device Role / Timing Role: Point-of-load regulator converting battery-derived 3.3–5 V input to clean 3.3 V system rail with low quiescent current. Use Value: 10 µA shutdown current extends battery life; soft-start prevents brownout during wake-from-sleep transitions. |
| Broadband Networking PHY | Industrial Sensor Hub |
Use Scenario: Supplying 3.3 V to Ethernet PHY ICs (e.g., DP83867IR) in enterprise switches or fiber media converters. IC Role / Device Role / Timing Role: High-efficiency DC-DC stage operating from 3.3 V or 5 V backplane, handling bursty traffic-induced load transients. Use Value: 88–94% efficiency at 1 A (PVIN = 5 V) minimizes thermal stress in dense board layouts; internal compensation simplifies compliance testing. | Use Scenario: Powering multi-sensor nodes (temperature, humidity, IMU) in edge IoT gateways with extended temperature requirements. IC Role / Device Role / Timing Role: Main 3.3 V rail generator supporting wide-input industrial supplies (2.85–5.5 V) and operating from –40°C to 125°C. Use Value: Guaranteed 3.3 V output tolerance (±1.9%) and thermal shutdown (165°C) ensure reliability in unventilated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 3 MHz fixed-frequency, 0.6–5.5 V adjustable output, 0.65 A max, smaller 2-mm × 2-mm WSON package | Lower current rating and higher frequency-suited for space-constrained, lower-power sensor nodes, not 2 A loads | Select when board area is critical and load < 0.65 A; avoid for FPGA or networking PHY use cases requiring 2 A. |
| MP2143GJ-Z | 2 A, 2.5–5.5 V input, 0.8–5 V adjustable output, 1.5 MHz, no internal compensation (requires external RC network) | Lacks factory-programmed 3.3 V option and integrated compensation-increases design complexity and component count | Choose only if adjustable output and higher frequency are mandatory; accept added layout and stability validation effort. |
Compared with TPS62231DRVR and MP2143GJ-Z, the LM2852YMXA-3.3 delivers guaranteed 2 A capability with zero-compensation external parts, factory-trimmed 3.3 V, and proven thermal performance in HTSSOP-14-making it optimal for cost-sensitive, medium-power embedded systems needing rapid time-to-market.
Availability
LM2852YMXA-3.3 is available at Aetrix Electronics and suitable for FPGA core power, portable computing rails, and broadband networking PHY supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM2852YMXA-3.3 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 IC design and manufacturing.
The LM2852 product line delivers highly integrated, thermally robust synchronous buck regulators targeting space- and cost-sensitive point-of-load applications in computing, communications, and industrial systems.
FAQ
What is the output voltage tolerance of the LM2852YMXA-3.3 across temperature and load?
The LM2852YMXA-3.3 has a factory-programmed 3.3 V output with guaranteed tolerance of ±1.9% (3.2257 V to 3.3743 V) over the full junction temperature range of –40°C to 125°C and full load range. This specification is validated per TI's electrical characteristics table and applies under recommended operating conditions with proper PCB layout and component selection.
Does the LM2852YMXA-3.3 require external compensation components?
No, the LM2852YMXA-3.3 integrates a complete type-three compensation network internally. This eliminates the need for external resistors or capacitors in the feedback loop, reducing bill-of-materials count and layout sensitivity-provided the selected output inductor (10–15 µH) and capacitor (68–220 µF) fall within TI's validated ranges per the datasheet.
Can the LM2852YMXA-3.3 operate with separate AVIN and PVIN supplies?
Yes, the LM2852YMXA-3.3 supports true split-rail operation: AVIN powers the control logic (2.85–5.5 V), while PVIN supplies the power FETs (1.5–5.5 V). PVIN must always be ≤ AVIN. This allows optimizing efficiency-for example, using 3.3 V for PVIN and 5 V for AVIN-without compromising regulation or thermal performance.
What is the purpose of the SNS pin on the LM2852YMXA-3.3?
The SNS (sense) pin on the LM2852YMXA-3.3 is the high-impedance feedback node for the output voltage regulation loop. It must be connected directly to the load side of the output capacitor-preferably at the load's power entry point-to compensate for IR drop in PCB traces and ensure accurate remote voltage regulation at the point of use.
How does the LM2852YMXA-3.3 handle startup under no-load conditions?
The LM2852YMXA-3.3 incorporates switch node protection logic that inhibits switching during no-load or very light-load conditions. The output reaches 3.3 V via charge redistribution, but active PWM operation begins only when sufficient load current is drawn-preventing instability and ensuring reliable, controlled startup without external intervention.
LM2852YMXA-3.3 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):
- 3.3V
- 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-3.3 FAQ
1.How can I place an order for LM2852YMXA-3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2852YMXA-3.3 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-3.3 reliable?
The price and inventory of LM2852YMXA-3.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2852YMXA-3.3 is usually 5 days.
3.What payment methods are accepted for LM2852YMXA-3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2852YMXA-3.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2852YMXA-3.3?
LM2852YMXA-3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2852YMXA-3.3 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-3.3?
For technical support, including LM2852YMXA-3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2852YMXA-3.3 requirements.
6.How does Aetrix verify that LM2852YMXA-3.3 is sourced from the original manufacturer or authorized distributors?
All LM2852YMXA-3.3 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-3.3 meets industry standards.
7.What is the process for return or replacement of LM2852YMXA-3.3?
All LM2852YMXA-3.3 units undergo pre-shipment inspection (PSI). If there is an issue with LM2852YMXA-3.3, 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-3.3 part is unused and in its original packaging.
Return procedure for LM2852YMXA-3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2852YMXA-3.3 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…
