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Product Detailed Parameters
- Description：IC REG BST CHARGE PUMP ADJ 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, Charge Pump, 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：375mA (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-1#TRPBF is a PWM DC/DC converter featuring an integrated 65V power switch. It supports boost, SEPIC, and inverting topologies with an input voltage range of 2.55V to 40V. The device offers adjustable switching frequencies between 200kHz and 1.5MHz via an external resistor or synchronization to an external clock. It includes soft-start functionality and operates within a temperature range of -40°C to 125°C TJ.
Feature Summary
- Configurable as boost, SEPIC, or inverting converter
- Integrated 65V power switch
- Adjustable or synchronized oscillator
- Built-in soft-start capability
Applications
- Inverting converters generating negative outputs from positive inputs
- Boost applications for step-up voltage conversion
- SEPIC configurations for wide input voltage ranges
- Battery-powered systems requiring efficient DC-DC regulation
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the EDD package code corresponds to the required 8-WFDFN footprint. Ensure the -1 variant matches the intended current rating requirements compared to standard versions. Cross-reference the manufacturer's latest datasheet for any updates on pinout or thermal characteristics before finalizing procurement.
Selection Notes
Select this component for designs requiring flexible topology options including inverting and SEPIC configurations. The 65V switch rating accommodates higher voltage transients. Consider the 8-WFDFN package for space-constrained PCB layouts. Verify that the operating frequency range aligns with system noise and efficiency targets. Check thermal performance requirements against the package's dissipation capabilities.
Part Context
This part belongs to the LT8570 family of high-voltage DC/DC converters. It shares core architecture with other variants like LT8570IMS8E-1 and LT8570IDD-1, differing primarily in package type and shipping format. The family is designed for applications needing robust switching performance with minimal external components.
Replacement Considerations
LT8570EDD-1#PBF is the tube-packaged equivalent. LT8570IDD-1#TRPBF offers the same electrical specifications in a DFN package. LT8570IMS8E-1#TRPBF provides identical functionality in an MSOP package. Verify pin compatibility and thermal resistance differences when substituting.
