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Product Detailed Parameters
- Description：IC REG BST CHARGE PUMP ADJ 14DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Boost, Charge Pump, Cuk, Flyback, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：22V
- Voltage - Output (Min/Fixed)：1.215V
- Voltage - Output (Max)：42V (Switch)
- Current - Output：3.3A (Switch)
- Frequency - Switching：200kHz ~ 2.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：14-WFDFN Exposed Pad
- Supplier Device Package：14-DFN (4x3)
- Grade：-
- Qualification：-
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Overview
The LT3581HDE#PBF is a PWM DC/DC converter manufactured by Analog Devices Inc., housed in a 14-lead DFN package. It integrates a 3.3A power switch and supports multiple topologies including boost, inverting, SEPIC, flyback, and charge pump configurations. The device operates with an input voltage range of 2.3V to 22V and features adjustable output voltage. Key electrical parameters include a switching frequency range of 200kHz to 2.5MHz, a maximum operating junction temperature of 150°C, and an operating supply current of 1.9mA. It provides fault protection against output shorts and overvoltages.
Feature Summary
- Integrates a high-current 3.3A power switch for efficient power conversion
- Supports versatile topology configurations including boost, inverting, and SEPIC
- Includes built-in fault protection mechanisms for output short circuits and overvoltage conditions
Applications
- Industrial control systems requiring robust DC/DC conversion
- Battery-powered equipment utilizing boost or inverting topologies
- Distributed power architectures needing flexible voltage regulation
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix PBF indicates lead-free compliance and tube packaging. Ensure the supplier provides valid traceability documentation matching the manufacturer's part number LT3581HDE#PBF to avoid counterfeit risks during acquisition.
Selection Notes
Select this component when designing circuits requiring high current capability up to 3.3A with flexible topology options. Consider the wide input voltage range suitable for varying source conditions. Evaluate thermal management requirements due to the high power density and ensure the application environment stays within the specified -40°C to 150°C junction temperature limits.
Part Context
This part belongs to the LT3581 series of multi-topology DC/DC converters from Analog Devices. It is designed for applications demanding high efficiency and compact solution size. The DFN package offers thermal performance advantages for surface mount assembly. It serves as a core power management solution for complex industrial and commercial electronic designs.
Replacement Considerations
Direct substitutes may include other Analog Devices multi-topology converters with comparable current ratings and input ranges. Verify pin compatibility and thermal characteristics before substitution. Cross-reference with similar models like the LT3580 series if lower current requirements suffice.
