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Product Detailed Parameters
- Description：PROTOTYPE
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Features：-
- Number of Channels：-
- FIFO's：-
- Protocol：-
- Data Rate (Max)：-
- Voltage - Supply：-
- With Auto Flow Control：-
- With IrDA Encoder/Decoder：-
- With False Start Bit Detection：-
- With Modem Control：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The LV14340DDAR is a step-down DC-DC converter manufactured by Texas Instruments, featuring an integrated high-side MOSFET. It operates with an input voltage range of 4 V to 40 V and delivers a continuous output current of 3.5 A. The device utilizes peak current mode control with an adjustable switching frequency from 200 kHz to 2 MHz. Key electrical parameters include a typical operating quiescent current of 300 μA and a shutdown supply current of 1 μA. The high-side MOSFET has a typical on-resistance of 100 mΩ. The component is housed in an 8-pin HSOIC package with a PowerPAD thermal pad.
Feature Summary
- Integrated high-side MOSFET with low on-resistance for efficient power conversion
- Internal loop compensation simplifies design and reduces external component count
- Adjustable switching frequency allows optimization for efficiency or component size
- Built-in protection mechanisms including thermal shutdown, overvoltage, and cycle-by-cycle current limit
Applications
- Automotive battery regulation
- Industrial power supplies
- Telecom and datacom systems
- Battery powered systems
Procurement Notes
Verify the specific ordering suffix DDAR corresponds to the HSOIC-8 package with the PowerPAD thermal pad as documented in the datasheet. Confirm that the component meets RoHS compliance requirements if applicable to the target assembly process. Ensure proper handling procedures are followed due to moisture sensitivity classification indicated in the product specifications.
Selection Notes
Select this regulator when a wide input voltage range up to 40 V is required alongside a 3.5 A load capability. The internal compensation feature makes it suitable for designs prioritizing rapid development with minimal external components. Consider the adjustable frequency range to balance between electromagnetic interference filtering and passive component physical size constraints.
Part Context
The LV14340 belongs to a family of buck converters designed for industrial and automotive environments. It shares pinout compatibility with other variants in the series, such as the LV14240 and LV14360, which offer different current ratings or input voltage limits. This integration supports modular power design strategies across various system architectures.
Replacement Considerations
The LMR51440 is identified as a newer synchronous converter option within the manufacturer's portfolio. Designers should evaluate the LMR51440 for potential improvements in efficiency or updated feature sets while verifying pin-to-pin compatibility and thermal performance requirements.
