LT8386JV#PBF Equivalent & Substitute Parts

Part Overview

The LT8386JV#PBF is an LED Driver IC manufactured by Analog Devices Inc., classified as a Power Management PMIC. This device functions as a 1-output DC-DC regulator with step-up (boost) topology, delivering PWM dimming capability at 3A output current. The component is actively produced and maintains automotive-grade qualification under AEC-Q100 standards. Substitute parts are identified when equivalent functional performance is required due to inventory constraints, design flexibility, or application-specific requirements within the defined electrical and mechanical parameter ranges.

Substiute Parts

LT8386JV#PBF

Analog Devices Inc.In Stock: 1451LT8386JV#PBF Datasheet

Current PartRFQ

TPS61500PWPR

Texas InstrumentsIn Stock: 23696TPS61500PWPR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LT8386JV#PBF are identified based on functional equivalence within the LED driver IC category. The substitution logic is determined by the following critical parameters:

Functional Equivalence Criteria:

• Device Type: DC-DC Regulator with step-up (boost) topology
• Output Configuration: Single output
• Output Current Rating: 3A
• Dimming Capability: PWM-compatible
• Switching Frequency Range: Overlap within 200kHz ~ 2MHz band
• Regulatory Compliance: RoHS3 compliance and active product status

Electrical Operating Range Considerations: Substitute parts must operate within overlapping input and output voltage ranges. The LT8386JV#PBF operates from 4V to 56V input with output range of 1.2V to 56V. Substitute candidates must support the required voltage envelope for the target application.

Mechanical and Packaging Constraints: Surface mount technology is required. Package form factor differences are acceptable when pin-to-pin functionality is preserved and board layout accommodation is feasible.

Parameter Comparison

Engineering Selection Recommendations

LT8386JV#PBF (Primary Part): The LT8386JV#PBF is recommended for applications requiring extended input voltage range (4V to 56V) and elevated junction temperature operation (-40°C to 150°C TJ). This device maintains automotive-grade AEC-Q100 qualification and is suitable for high-temperature automotive lighting applications. The 28-LQFN package provides a compact form factor with exposed pad thermal management.

TPS61500PWPR (Substitute Part): The TPS61500PWPR from Texas Instruments serves as a functional substitute for applications operating within reduced voltage ranges (2.9V to 18V input, 2.9V to 38V output). This device offers dual dimming capability (analog and PWM) and is actively produced with RoHS3 compliance. The 14-HTSSOP package presents a smaller footprint compared to the primary part. The operating temperature range is limited to -40°C to 85°C (TA), restricting use in high-temperature environments. This substitute is suitable for backlight applications within the specified electrical envelope.

Selection Basis: Both parts maintain active product status and RoHS3 compliance. Substitution is valid when the target application operates within the TPS61500PWPR electrical and thermal specifications. The choice between primary and substitute parts is determined by the specific input voltage range, output voltage requirements, and operating temperature constraints of the end application.

Frequently Asked Questions (FAQ)

Q: Can the TPS61500PWPR replace the LT8386JV#PBF in all applications?

A: No. The TPS61500PWPR operates within a narrower input voltage range (2.9V to 18V versus 4V to 56V) and lower maximum output voltage (38V versus 56V). Substitution is valid only when the application operates within these reduced electrical parameters. Additionally, the TPS61500PWPR maximum operating temperature is 85°C (TA), compared to 150°C (TJ) for the LT8386JV#PBF, limiting use in high-temperature environments.

Q: What are the key electrical differences between these parts?

A: The primary differences are input voltage range, output voltage range, and operating temperature. The LT8386JV#PBF supports 4V to 56V input and 1.2V to 56V output, while the TPS61500PWPR supports 2.9V to 18V input and 2.9V to 38V output. Both devices deliver 3A output current and operate within overlapping switching frequency ranges (200kHz to 2MHz and 200kHz to 2.2MHz respectively).

Q: Are the packages compatible?

A: No. The LT8386JV#PBF uses a 28-LQFN (4x5) package, while the TPS61500PWPR uses a 14-HTSSOP package. These are different form factors requiring distinct PCB layouts. Package selection depends on available board space and thermal management requirements.

Q: Do both parts support PWM dimming?

A: Yes. The LT8386JV#PBF supports PWM dimming. The TPS61500PWPR supports both analog and PWM dimming, providing additional flexibility for dimming control implementation.

Q: What is the significance of the AEC-Q100 qualification on the LT8386JV#PBF?

A: AEC-Q100 qualification indicates the LT8386JV#PBF meets automotive industry reliability and quality standards. The TPS61500PWPR does not carry this designation. For automotive applications requiring AEC-Q100 compliance, the LT8386JV#PBF is the appropriate choice.

Q: How do the moisture sensitivity levels differ?

A: The LT8386JV#PBF has MSL 3 (168 Hours), while the TPS61500PWPR has MSL 2 (1 Year). Lower MSL ratings indicate greater tolerance to moisture exposure during storage and handling. The TPS61500PWPR offers superior moisture resistance characteristics.

Q: Can these parts be used interchangeably in backlight applications?

A: Interchangeability depends on the specific electrical requirements. The TPS61500PWPR is explicitly rated for backlight applications. If the backlight circuit operates within the TPS61500PWPR voltage and temperature specifications, substitution is valid. If higher input voltages or output voltages are required, the LT8386JV#PBF is necessary.