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Texas Instruments LM2853MH-3.0/NOPB
- Part No.:
- LM2853MH-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2853MH-3.0/NOPB.pdf
- Description:
- IC REG BUCK 3V 3A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,503
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Product details
Overview
LM2853MH-3.0/NOPB from Texas Instruments is a 3-A, 550-kHz synchronous buck regulator with factory-programmed 3.0 V output, 3 V to 5.5 V input range, internal 40 mΩ/32 mΩ MOSFETs, and voltage-mode control-designed for FPGA/DSP core power in space-constrained industrial and networking systems.
For engineers reviewing the LM2853MH-3.0/NOPB datasheet, LM2853MH-3.0/NOPB pinout, LM2853MH-3.0/NOPB application, or LM2853MH-3.0/NOPB equivalent, key selection criteria include output voltage accuracy (±0.675% over –40°C to 125°C), thermal performance (RθJA = 38°C/W), soft-start programmability via external capacitor, and HTSSOP-14 package compatibility with high-current PCB layout requirements.
Technical Context
The LM2853MH-3.0/NOPB implements voltage-mode PWM control with integrated type-three compensation, eliminating external compensation components. Its dual-rail capability allows independent AVIN (3–5.5 V) and PVIN (1.5–5.5 V) supplies, enabling optimized control logic and power stage biasing.
Internal protection includes thermal shutdown at 165°C (10°C hysteresis), current-limit threshold of 3.6–5 A, and UVLO on AVIN with 2.47 V turn-on and 50–260 mV hysteresis. The device operates across –40°C to 125°C junction temperature with 12 µA shutdown quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-set 3.0 V ±0.675% (–40°C to 125°C), measured at SNS pin |
| Max Output Current | 3 A continuous load with thermal derating above 85°C ambient |
| Input Voltage Range | 3 V to 5.5 V on AVIN; 1.5 V to 5.5 V on PVIN - supports split-rail operation |
| Switching Frequency | 550 kHz nominal (325–725 kHz over temperature), enabling compact LC filter design |
| FET On-Resistance | 40 mΩ (PFET) / 32 mΩ (NFET) at TJ = 25°C, minimizing conduction loss at full load |
| Quiescent Current | 12 µA in shutdown mode (EN = 0 V), critical for battery-backed standby systems |
| Thermal Resistance | RθJA = 38°C/W (HTSSOP-14 with exposed pad soldered to PCB ground plane) |
Pinout & Package
LM2853MH-3.0/NOPB uses the 14-pin HTSSOP (PWP) package (5.00 mm × 4.40 mm body, 0.65 mm pitch) with an exposed thermal pad internally connected to GND-requires soldering to a dedicated PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AVIN) | Control circuit supply | Bias voltage for internal logic and error amplifier; must be ≥3 V for guaranteed operation |
| 2 (EN) | Enable input | Active-high enable with internal 1.5 µA pullup; 75% AVIN threshold for turn-on |
| 3 (SGND) | Analog ground | Low-noise reference for feedback and compensation; separate from PGND to minimize noise coupling |
| 4 (SS) | Soft-start control | External capacitor sets startup ramp time; 2.2 nF yields ~3 ms rise to 95% of 3.0 V output |
| 5, 12, 13 (NC) | No-connect | Must be tied to SGND or PGND per datasheet; not internally bonded |
| 6, 7 (PVIN) | Power FET supply | High-current input for internal MOSFETs; requires low-ESR bulk capacitance placed adjacent to pins |
| 8, 9 (SW) | Switch node | Drives external inductor; high dV/dt node requiring short, wide trace routing and EMI mitigation |
| 10, 11 (PGND) | Power ground | Return path for high-switching currents; must connect to exposed pad and local ground plane |
| 14 (SNS) | Voltage sense input | Resistive divider feedback (432 kΩ internal) for precision regulation; Kelvin connection recommended |
| EP (Exposed Pad) | Thermal & ground connection | Internally tied to GND but not primary return path; soldering required for RθJA spec compliance |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Type-Three Compensation | Eliminates external compensation network, reducing BOM count and layout sensitivity |
| Factory-Programmed Output | 3.0 V output set permanently during manufacturing-no external resistor divider needed |
| Low Standby Current | 12 µA shutdown current enables >1-year battery life in always-on IoT edge nodes |
| Internal Power MOSFETs | 40 mΩ PFET + 32 mΩ NFET reduce board area and thermal design complexity vs. controller-only solutions |
| Split-Rail Input Support | Independent AVIN/PVIN rails allow 3.3 V control logic with 5 V power input, improving efficiency in mixed-voltage systems |
Applications
| Point-of-Load FPGA Core Supply | Industrial PLC I/O Module Regulator |
|---|---|
|
Use Scenario: Powers 3.0 V I/O banks of Xilinx Artix-7 FPGA in programmable logic controller backplane. IC Role / Device Role / Timing Role: Primary DC-DC converter delivering regulated 3.0 V at up to 3 A with <1% load regulation. Use Value: Internal compensation and soft-start prevent inrush current damage during hot-swap insertion of I/O modules. |
Use Scenario: Supplies isolated 3.0 V rail for analog sensor interface and ADC reference in DIN-rail mounted PLC. IC Role / Device Role / Timing Role: High-efficiency buck regulator operating from 5 V intermediate bus under variable load (10 mA–2.5 A). Use Value: 38°C/W thermal resistance enables convection-cooled operation without heatsink in sealed enclosures. |
| 5G Small Cell Baseband Power | Automotive Infotainment DSP Core |
|
Use Scenario: Generates 3.0 V for TI C66x DSP in outdoor small cell radio unit with ambient range –40°C to +85°C. IC Role / Device Role / Timing Role: Synchronous buck regulator with thermal shutdown (165°C) and UVLO protection for unattended operation. Use Value: 550 kHz switching frequency allows use of 4.7 µH inductor and 120 µF output capacitor-reducing solution size by 35% vs. 300 kHz alternatives. |
Use Scenario: Powers 3.0 V core of NXP i.MX8M Nano processor in automotive head unit with ASIL-B functional safety context. IC Role / Device Role / Timing Role: Non-isolated point-of-load regulator with 12 µA shutdown current for low-power audio subsystem wake-up. Use Value: Factory-programmed 3.0 V eliminates calibration drift risk from external resistor tolerances in long-lifecycle automotive programs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54332DR | 3.5 A rating, 1 MHz switching, external compensation, adjustable output (0.8–6 V) | Requires external feedback resistors and compensation network; higher frequency enables smaller magnetics | Select when output voltage flexibility or higher switching frequency is required; adds design complexity and BOM cost |
| MP2332HGTL-Z | 3 A rating, 500 kHz, internal compensation, 2.5–6 V input, adjustable output (0.8–5.5 V) | Wider input range but no factory-programmed 3.0 V option; different pinout and thermal pad configuration | Choose for cost-sensitive consumer designs where external resistor programming is acceptable and RoHS+REACH compliance is prioritized |
Compared with TPS54332DR and MP2332HGTL-Z, LM2853MH-3.0/NOPB delivers plug-and-play 3.0 V regulation with zero external feedback components and proven thermal performance in HTSSOP-14-ideal for volume production where layout simplicity and test repeatability are critical.
Availability
LM2853MH-3.0/NOPB is available at Aetrix Electronics and suitable for FPGA core power, industrial PLC I/O modules, and 5G small cell baseband applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LM2853MH-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 leader specializing in analog and embedded processing technologies, with decades of expertise in power management IC design and high-volume manufacturing.
The LM2853 product line delivers highly integrated, thermally robust synchronous buck regulators for space-constrained point-of-load applications in communications infrastructure, industrial automation, and embedded computing.
FAQ
What is the output voltage tolerance of the LM2853MH-3.0/NOPB over temperature?
The LM2853MH-3.0/NOPB maintains a 3.0 V output with ±0.675% tolerance (2.9325 V to 3.0675 V) across the full operating junction temperature range of –40°C to 125°C, as specified in the Electrical Characteristics table under VOUT parameter testing conditions.
Can the LM2853MH-3.0/NOPB operate with separate AVIN and PVIN supplies?
Yes, the LM2853MH-3.0/NOPB supports split-rail operation: AVIN powers the control circuitry (3–5.5 V), while PVIN supplies the power FETs (1.5–5.5 V). PVIN must not exceed AVIN, and output filter component selection should follow recommendations for the PVIN voltage level used.
What is the purpose of the exposed pad on the LM2853MH-3.0/NOPB package?
The exposed pad on the LM2853MH-3.0/NOPB is internally connected to GND and must be soldered to a PCB ground plane to achieve the specified RθJA of 38°C/W. It enhances thermal dissipation and improves regulation stability but is not intended as the primary GND return path for high-current loops.
How is soft-start configured for the LM2853MH-3.0/NOPB?
Soft-start is controlled via the SS pin using an external capacitor: a 2.2 nF ceramic capacitor yields approximately 3 ms startup time to 95% of 3.0 V output. The internal DAC resistor is 450 kΩ, and CSS values must remain between 1 nF and 50 nF to ensure proper fault recovery behavior.
Does the LM2853MH-3.0/NOPB require external compensation components?
No, the LM2853MH-3.0/NOPB integrates a complete type-three compensation network, eliminating the need for external capacitors or resistors in the feedback loop. This simplifies design, reduces component count, and ensures stability when using recommended inductor and capacitor values from Table 1 of the datasheet.
LM2853MH-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:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 550kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
LM2853MH-3.0/NOPB FAQ
1.How can I place an order for LM2853MH-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2853MH-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 LM2853MH-3.0/NOPB reliable?
The price and inventory of LM2853MH-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 LM2853MH-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2853MH-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2853MH-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2853MH-3.0/NOPB?
LM2853MH-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2853MH-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 LM2853MH-3.0/NOPB?
For technical support, including LM2853MH-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2853MH-3.0/NOPB requirements.
6.How does Aetrix verify that LM2853MH-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2853MH-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 LM2853MH-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2853MH-3.0/NOPB?
All LM2853MH-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2853MH-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 LM2853MH-3.0/NOPB part is unused and in its original packaging.
Return procedure for LM2853MH-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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