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Product Detailed Parameters
- Description：IC REG BOOST CUK ADJ TRPL 20QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive and Negative (Dual Rail)
- Topology：Boost, Cuk
- Output Type：Adjustable
- Number of Outputs：3
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：6V
- Voltage - Output (Min/Fixed)：±2.5V
- Voltage - Output (Max)：±32V
- Current - Output：800mA (Switch), 900mA (Switch), 400mA (Switch)
- Frequency - Switching：1MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：20-WFQFN Exposed Pad
- Supplier Device Package：20-QFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LT3587EUD#PBF is a monolithic switching regulator IC manufactured by Analog Devices Inc. It integrates three independent power switches to provide three non-isolated outputs from a single input source. The device utilizes boost and Cuk converter topologies to generate positive and negative voltage rails. It operates with an input voltage range of 2.5V to 6V and features a fixed switching frequency of 1MHz. The integrated switches support peak currents of 800mA, 900mA, and 400mA respectively. The adjustable output voltages can be set within a range of ±2.5V. The component is housed in a 20-lead WFQFN package with an exposed thermal pad.
Feature Summary
- Integrates three independent power switches for simultaneous multi-output regulation
- Combines boost and Cuk converter topologies to generate positive and negative rails
- Includes internal compensation and frequency synchronization capabilities
- Features thermal shutdown protection for enhanced reliability
Applications
- Portable battery-powered equipment requiring multiple voltage rails
- Industrial control systems needing isolated signal interfaces
- Automotive electronics operating on 12V or 24V nominal buses
- Telecommunications infrastructure powering mixed-signal circuits
Procurement Notes
Verify the complete part number including the suffix #PBF to confirm lead-free compliance and RoHS status. Ensure the ordering code matches the specific tape-and-reel or tube packaging requirements for your assembly line. Cross-reference the manufacturer's latest datasheet revision to confirm pinout compatibility and any design changes before finalizing procurement specifications.
Selection Notes
Select this component when designing systems that require both positive and negative supply voltages derived from a low-voltage input source. The integrated nature of the three switches reduces external component count compared to discrete solutions. Consider the thermal performance of the 20-WFQFN package and ensure adequate PCB copper area is allocated for the exposed pad to manage heat dissipation effectively under maximum load conditions.
Part Context
This part belongs to the LT3587 family of triple-output switching regulators. It is distinct from standard dual-output or single-output converters by its ability to drive three independent loads simultaneously. The EUD package variant specifies the 20-lead WFQFN form factor with an exposed pad, differentiating it from other package options available within the broader LT3587 product line.
Replacement Considerations
Direct substitutes are not explicitly confirmed in the provided documentation. Verify functional equivalence regarding switch current ratings, topology compatibility, and pinout alignment if considering alternative manufacturers. Consult Analog Devices for official recommended replacements or updated design-in guides.
