550kHz/1.6MHz 1.5A Step-Down DC-DC Switching Regulator
Product details
Parameters
Package | Pins | Size
Features
- Space-Saving WSON and MSOP-PowerPAD Packages
- 3-V to 20-V Input Voltage Range
- 0.8-V to 18-V Output Voltage Range
- 1.5-A Output Current
- 550-kHz (LM2738Y) and 1.6-MHz (LM2738X) Switching Frequencies
- 250-mΩ NMOS Switch
- 400-nA Shutdown Current
- 0.8-V, 2% Internal Voltage Reference
- Internal Soft-Start
- Current-Mode, PWM Operation
- Thermal Shutdown
All trademarks are the property of their respective owners.
Description
The LM2738 regulator is a monolithic, high-frequency, PWM step-down DC-DC converter in an 8-pin WSON or 8-pin MSOP-PowerPAD package. It provides all the active functions for local DC-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.
With a minimum of external components, the LM2738 is easy to use. The ability to drive 1.5-A loads with an internal 250-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. Switching frequency is internally set to 550 kHz (LM2738Y) or 1.6 MHz (LM2738X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External enable is included, featuring an ultralow standby current of 400 nA. The LM2738 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce in-rush current, cycle-by-cycle current limit, thermal shutdown, and output over-voltage protection.
Similar but not functionally equivalent to the compared device:
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LM2738 550-kHz/1.6-MHz 1.5-A Step-Down DC-DC Switching Regulator datasheet (Rev. C) | Sep. 25, 2015 |
Technical articles | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 | |
User guide | AN-1837 LM2738 Evaluation Board (Rev. A) | Apr. 25, 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LM2738 demo board is configured to convert 12V input to 3.3V output at 1.5A load current using the LM2738X 1.6MHz or the LM2738Y 550kHz step down DC-DC regulator. The tiny low profile eMSOP-8 and LLP-8 packages allows the demo board to be manufactured using just over one square inch of a 4-layer (...)
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
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
HVSSOP (DGN) | 8 | View options |
WSON (NGQ) | 8 | 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.