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Product Detailed Parameters
- Description：IC REG BOOST CUK ADJ 750MA 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Boost, Cuk, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.55V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：0.003V, 1.204V
- Voltage - Output (Max)：65V (Switch)
- Current - Output：750mA (Switch)
- Frequency - Switching：200kHz ~ 1.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LT8570EDD#TRPBF is a PWM DC/DC converter from Analog Devices Inc. housed in an 8-DFN (3x3) package with exposed pad, supplied in tape and reel packaging. It features a 65V power switch capable of delivering up to 400mA output current. The device supports Boost, Inverting, and SEPIC topologies with an adjustable output voltage range from 1.204V to 65V. Input voltage operates between 2.55V and 40V. The switching frequency is fixed at 1.5MHz, and the quiescent current is 1uA. It functions within a temperature range of -40°C to +125°C TJ.
Feature Summary
- Supports multiple conversion topologies including boost, inverting, and SEPIC configurations.
- Integrates a high-voltage 65V power switch for robust operation.
- Features ultra-low quiescent current consumption for efficiency.
- Includes shutdown functionality for power management.
Applications
- Portable instrumentation requiring flexible voltage conversion
- Battery-powered systems needing efficient step-up or inversion
- Industrial control circuits utilizing SEPIC topology
Procurement Notes
Verify the specific suffix '#TRPBF' confirms tape and reel packaging distinct from tube variants like '#PBF'. Confirm the absence of the '-1' suffix ensures standard positive or negative output capability rather than fixed negative output configurations. Cross-reference the DFN-8 package marking with official mechanical drawings to ensure compatibility with PCB footprint designs.
Selection Notes
Select this component when a single inductor solution for boost, inverting, or SEPIC is required. The 1.5MHz fixed frequency allows for smaller passive components compared to lower frequency alternatives. Ensure input voltages remain within the 2.55V to 40V range and verify that the 400mA switch current limit meets load requirements without external synchronization needs.
Part Context
Part of the LT8570 family of versatile DC/DC converters designed for applications requiring multiple conversion types from a single IC. It complements other Analog Devices PMICs by offering flexibility in topology selection. The DFN package provides a compact form factor suitable for space-constrained portable and industrial electronics designs.
Replacement Considerations
LT8570EDD#PBF differs only in packaging format (tube vs. tape and reel). LT8570EDD-1#PBF offers fixed negative output configuration. LT8570HMS8E#PBF and LT8570EMS8E-1#PBF utilize MSOP-8 packages with different pinouts and thermal characteristics, requiring schematic and layout review before substitution.
