My Inquiry
My Account
Microchip Technology LM2575-5.0BWM-TR
- Part No.:
- LM2575-5.0BWM-TR
- Manufacturer:
- Microchip Technology
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LM2575-5.0BWM-TR.pdf
- Description:
- IC REG BUCK 5V 1A 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,962
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2575-5.0BWM-TR from Micrel is a fixed-output 5.0V, 1A step-down (buck) switching regulator with 52kHz fixed-frequency operation, ±3% output voltage tolerance over line/load, and integrated thermal shutdown and cycle-by-cycle current limiting. It operates from 4V to 40V input and delivers high-efficiency regulation in industrial power supplies and embedded DC-DC conversion.
For engineers reviewing the LM2575-5.0BWM-TR datasheet, LM2575-5.0BWM-TR pinout, LM2575-5.0BWM-TR application, or LM2575-5.0BWM-TR equivalent, key selection criteria include input voltage range (4–40V), guaranteed 1A output current, TO-263-compatible 24-pin wide SOIC package, and standby current <200µA - all critical for thermally constrained, cost-sensitive buck converter designs.
Technical Context
The LM2575-5.0BWM-TR integrates a 52kHz oscillator, error amplifier, bandgap reference (1.23V), PWM comparator, and 1A NPN switch driver in a monolithic IC. Its feedback loop uses an internal 1.23V reference with external resistor divider omitted - the 5.0V output is factory-trimmed and fixed.
Protection features include thermal shutdown triggered at ~150°C junction temperature and peak current limiting at 1.7–3.2A. The ON/OFF pin enables logic-controlled shutdown with <200µA standby current, and saturation voltage is specified at ≤1.4V under 1A load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±3% over full operating range - eliminates need for external feedback resistors and simplifies layout. |
| Max Output Current | 1A continuous - supports mid-power applications without external current boosting. |
| Input Voltage Range | 4V to 40V - accommodates wide-input industrial, automotive, and telecom supply rails. |
| Switching Frequency | 52kHz ±10% - enables use of low-cost, standard 330µH inductors and reduces EMI filtering complexity. |
| Efficiency | 82% typical at 12VIN/5VOUT/1A - significantly reduces heat dissipation versus linear regulators. |
| Standby Current | <200µA when ON/OFF pin = 5V - enables low-power sleep modes in battery-backed systems. |
| Thermal Protection | Internal thermal shutdown at ~150°C junction - prevents damage during overload or poor heatsinking. |
Pinout & Package
LM2575-5.0BWM-TR is housed in a 24-pin wide SOIC (WM) package with exposed thermal pad. Pin 1 is VIN; pins 2–4 are OUT, GND, FB (though FB is internally connected for fixed versions); pin 5 is ON/OFF; remaining pins are NC or internal power/ground connections per functional diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection (4–40V); requires local 100µF input capacitor for stability. |
| 2 | OUT | Switched output node driving external inductor; connects to catch diode anode and output filter. |
| 3 | GND | Power ground return for internal switch and control circuitry; must be low-inductance connection. |
| 4 | FB | Internally tied to 5.0V output - not externally accessible; no external resistor divider required. |
| 5 | ON/OFF | Logic-level enable/disable input; ≥2.2V = ON, ≤1.0V = OFF; draws <30µA in active state. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0V output | Factory-trimmed accuracy eliminates external feedback components and calibration effort. |
| Integrated protection | Thermal shutdown + cycle-by-cycle current limit prevent failure during short-circuit or overtemperature events. |
| Low external part count | Only four external components required: input cap, output cap, inductor, and Schottky catch diode. |
| 52kHz fixed frequency | Enables predictable EMI behavior and compatibility with off-the-shelf, low-cost 330µH power inductors. |
| TO-263-compatible SOIC | 24-pin wide SOIC (WM) package offers superior thermal performance vs. DIP and smaller footprint than TO-220. |
Applications
| Industrial Power Supplies | Embedded System DC-DC Conversion |
|---|---|
|
Use Scenario: Converting unregulated 12–24V rail to stable 5V for PLC I/O modules and sensor interfaces. IC Role / Device Role / Timing Role: Primary buck regulator providing isolated, regulated 5V supply with minimal external components. Use Value: Eliminates need for heatsink due to 82% efficiency and built-in thermal protection, reducing board space and BOM cost. |
Use Scenario: Generating 5V from 9–36V vehicle battery for infotainment head units and telematics gateways. IC Role / Device Role / Timing Role: Input-stage buck converter handling wide automotive input transients while maintaining tight output regulation. Use Value: 4–40V input range and ±3% output tolerance ensure reliable operation across cold-crank (6.5V) and load-dump (40V) conditions. |
| On-Card Switching Regulators | Efficient Pre-regulator for Linear Regulators |
|
Use Scenario: Local 5V generation on dense PCBs where space prohibits through-hole TO-220 packages. IC Role / Device Role / Timing Role: Compact surface-mount buck regulator replacing linear regulators to reduce thermal density. Use Value: 24-pin wide SOIC package with thermal pad achieves lower θJA (100°C/W) than DIP, enabling higher ambient operation without airflow. |
Use Scenario: Reducing dropout voltage before low-noise LDOs in mixed-signal ADC/DAC subsystems. IC Role / Device Role / Timing Role: High-efficiency pre-regulator lowering input-to-LDO differential voltage and minimizing LDO power loss. Use Value: 82% efficiency at 1A cuts pre-LDO dissipation by >75% versus direct linear regulation from 24V, extending system thermal margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2575-5.0T | Same electrical specs but in 5-pin TO-220 package; higher θJA (65°C/W) and requires heatsink above ~500mA. | Better suited for prototyping or low-volume assemblies where through-hole mounting and manual heatsinking are acceptable. | Select LM2575-5.0T only if mechanical constraints favor TO-220 or thermal design includes external heatsink. |
| LM2596-5.0 | Higher 150kHz switching frequency, 3A rating, and ±2% output tolerance; requires different inductor value (typically 33–100µH). | Supports higher current and smaller magnetics but increases EMI filtering requirements and layout sensitivity. | Choose LM2596-5.0 when >1A output or tighter regulation is needed; avoid if legacy 330µH inductor reuse is mandatory. |
Compared with LM2575-5.0T, LM2575-5.0BWM-TR offers superior thermal performance in surface-mount layouts and eliminates heatsink dependency up to 1A. Versus LM2596-5.0, it trades higher current capability for proven 52kHz stability, simpler magnetics sourcing, and lower EMI design risk in noise-sensitive environments.
Availability
LM2575-5.0BWM-TR is available at Aetrix Electronics and suitable for industrial power supplies, embedded system DC-DC conversion, and on-card switching regulators requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LM2575-5.0BWM-TR 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
Micrel Inc. was a U.S.-based analog and mixed-signal semiconductor company headquartered in San Jose, CA, specializing in power management, timing, and interface solutions before its acquisition by Microchip Technology in 2015.
The LM2575 series was designed as a drop-in, high-efficiency replacement for three-terminal linear regulators in medium-power DC-DC applications - targeting cost-sensitive industrial, telecom, and embedded systems where thermal and board-space constraints matter.
FAQ
What is the maximum input voltage rating for LM2575-5.0BWM-TR?
The absolute maximum input voltage for LM2575-5.0BWM-TR is 45V, but the recommended operating range is 4V to 40V. Exceeding 40V risks violating the device's safe operating area, especially under high duty cycle or elevated temperature conditions. Always include transient suppression if used in automotive or industrial environments with potential load-dump events.
Does LM2575-5.0BWM-TR require external feedback resistors?
No, LM2575-5.0BWM-TR does not require external feedback resistors. As a fixed-output variant, its 5.0V regulation is achieved via internal trimming of the feedback network; the FB pin is internally connected and not accessible for external adjustment. This simplifies design and improves output accuracy consistency.
What package type is used for LM2575-5.0BWM-TR?
LM2575-5.0BWM-TR uses a 24-pin wide SOIC (WM) package with an exposed thermal pad. This surface-mount package provides better thermal performance than the plastic DIP version and smaller footprint than TO-220, making it ideal for automated assembly and space-constrained PCBs.
How does the ON/OFF pin function on LM2575-5.0BWM-TR?
The ON/OFF pin on LM2575-5.0BWM-TR controls device enablement: applying ≥2.2V (VIH) turns the regulator ON, while ≤1.0V (VIL) forces shutdown with standby current <200µA. The pin draws <30µA during normal operation and supports simple microcontroller GPIO or logic-level control without level-shifting.
Is LM2575-5.0BWM-TR RoHS compliant?
Yes, LM2575-5.0BWM-TR is RoHS compliant per the ordering information in the datasheet. The "Y" suffix denotes Pb-free/RoHS-compliant packaging; "BWM" indicates the 24-pin wide SOIC package, and the "-TR" suffix confirms tape-and-reel packaging for automated assembly.
LM2575-5.0BWM-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 52kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
LM2575-5.0BWM-TR FAQ
1.How can I place an order for LM2575-5.0BWM-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2575-5.0BWM-TR 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 LM2575-5.0BWM-TR reliable?
The price and inventory of LM2575-5.0BWM-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2575-5.0BWM-TR is usually 5 days.
3.What payment methods are accepted for LM2575-5.0BWM-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2575-5.0BWM-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2575-5.0BWM-TR?
LM2575-5.0BWM-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2575-5.0BWM-TR 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 LM2575-5.0BWM-TR?
For technical support, including LM2575-5.0BWM-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2575-5.0BWM-TR requirements.
6.How does Aetrix verify that LM2575-5.0BWM-TR is sourced from the original manufacturer or authorized distributors?
All LM2575-5.0BWM-TR 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 LM2575-5.0BWM-TR meets industry standards.
7.What is the process for return or replacement of LM2575-5.0BWM-TR?
All LM2575-5.0BWM-TR units undergo pre-shipment inspection (PSI). If there is an issue with LM2575-5.0BWM-TR, 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 LM2575-5.0BWM-TR part is unused and in its original packaging.
Return procedure for LM2575-5.0BWM-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2575-5.0BWM-TR 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
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
