4.5V to 42V, 0.3A Step-Down DC/DC Switching Regulator in SOT-23
Product details
Parameters
Package | Pins | Size
Features
- Input Voltage Range of 4.5V to 42V
- Output Voltage Range of 0.765V to 34V
- Output Current up to 0.3A
- 1.25 MHz Switching Frequency
- Low Shutdown Iq, 16 µA Typical
- Short Circuit Protected
- Internally Compensated
- Soft-Start Function
- Thin SOT-23-6 Package (2.97 x 1.65 x 1mm)
- Fully Enabled for WEBENCH® Power Designer
Performance Benefits
- Tight Accuracy for Powering Digital ICs
- Extremely Easy to Use
- Tiny Overall Solution Reduces System Cost
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Description
The LMR14203 is a PWM DC/DC buck (step-down) regulator. With a wide input range from 4.5V-42V, it is suitable for a wide range of applications such as power conditioning from unregulated sources. They feature a low RDSON (0.9Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 1.25 MHz allowing the use of small external components while still being able to have low output voltage ripple. Soft-start can be implemented using the shutdown pin with an external RC circuit allowing the user to tailor the soft-start time to a specific application.
The LMR14203 is optimized for up to 300 mA load current.
Additional features include: thermal shutdown, VIN under-voltage lockout, and gate drive under-voltage lockout. The LMR14203 is available in a low profile SOT-6L package.
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 LMR14203/06 is a PWM DC/DC buck (step-down) regulator. With a wide input range from 4.5V-42V, it is suitable for a variety of applications from automotive to power conditioning of unregulated sources. The LMR14203/LMR14006 Evaluation Board is designed to provide the design engineer with a fully (...)
Features
- 4.5V to 42V Input Voltage Range
- 1.2V Output Voltage
- Up to 300 mA Output Current
- Switching Frequency of 1.25 MHz
- Internal Compensation
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 PMP7800 BOM.pdf (163KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOT-23-THIN (DDC) | 6 | View options |
Ordering & quality
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- Device marking
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- 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
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