75V, 0.5A Step-Down Switching Regulator
Product details
Parameters
Package | Pins | Size
Features
- LM5574-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (−40°C to + 125°C Operating Junction Temperature)
- Integrated 75V, 750mΩ N-channel MOSFET
- Ultra-Wide Input Voltage Range from 6V to 75V
- Adjustable Output Voltage as Low as 1.225V
- 1.5% Feedback Reference Accuracy
- Operating Frequency Adjustable Between 50kHz and 500kHz with Single Resistor
- Master or Slave Frequency Synchronization
- Adjustable Soft-Start
- Emulated Current Mode Control Architecture
- Wide Bandwidth Error Amplifier
- Built-in Protection
- Automotive Grade Product Datasheet that is AEC-Q100 Grade 0 Qualified is Available Upon Request
- (−40°C to + 150°C Operating Junction Temperature)
Package
- TSSOP-16
WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.
Description
The LM5574 is an easy to use SIMPLE SWITCHER® buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 75V, the LM5574 delivers 0.5A of continuous output current with an integrated 750mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease of loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5574 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a TSSOP-16 package. The LM5574 is supported by the full suite of WEBENCH On-Line design tools.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LM5574 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5574 regulator IC. The evaluation board provides a 5V output with a 0.5A current capability. The ultra-wide input voltage ranges (...)
Features
- Integrated 75V, 750Wm N-Channel MOSFET
- Ultra-wide input voltage range from 6V to 75V
- Adjustable output voltage as low as 1.225V
- 1.5% feedback reference accuracy
- Operating frequency adjustable between 50kHz and 500kHz with single resistor
- Master or slave frequency synchronization
- Adjustable soft-start
- (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-01054 Assembly Drawing.pdf (858KB) -
download TIDA-01054 PCB.pdf (3668KB) -
download TIDA-01054 Gerber.zip (1236KB) -
download TIDA-01054 BOM (Rev. A).pdf (79KB) -
download TIDA-01054 Altium (Rev. A).zip (57322KB)
Design files
-
download TIDA-01055 BOM.pdf (231KB) -
download TIDA-01055 Assembly Drawing.pdf (872KB) -
download TIDA-01055 PCB.pdf (3715KB) -
download TIDA-01055 Altium.zip (17037KB) -
download TIDA-01055 Gerber.zip (1227KB)
Design files
-
download TIDA-01057 BOM.pdf (123KB) -
download TIDA-01057 Assembly Drawing.pdf (983KB) -
download TIDA-01057 PCB.pdf (4279KB) -
download TIDA-01057 Altium.zip (30897KB) -
download TIDA-01057 Gerber.zip (2100KB)
Design files
-
download TIDA-01056 BOM.pdf (124KB) -
download TIDA-01056 Assembly Drawing.pdf (810KB) -
download TIDA-01056 PCB.pdf (3442KB) -
download TIDA-01056 CAD Files.zip (2609KB) -
download TIDA-01056 Gerber.zip (1603KB)
Design files
-
download TIDA-01050 BOM.pdf (247KB) -
download TIDA-01050 Assembly Drawing.pdf (3862KB) -
download TIDA-01050 PCB.pdf (7143KB) -
download TIDA-01050 CAD Files.zip (2442KB) -
download TIDA-01050 Gerber.zip (1180KB)
Design files
-
download TIDA-01052 BOM.pdf (247KB) -
download TIDA-01052 Assembly Drawing.pdf (3862KB) -
download TIDA-01052 PCB.pdf (7170KB) -
download TIDA-01052 CAD Files.zip (11142KB) -
download TIDA-01052 Gerber.zip (1180KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
TSSOP (PW) | 16 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.