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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 LT8570IDD-1#TRPBF is a PWM DC/DC converter featuring an integrated 0.25A, 65V power switch. It supports Boost, SEPIC, and Inverting topologies with an input voltage range of 2.55V to 40V. The device offers adjustable output voltages from 0.003V to 65V and delivers up to 375mA switch current. Operating frequencies are selectable between 200kHz and 1.5MHz. It includes soft-start and synchronization capabilities, housed in an 8-lead DFN package.
Feature Summary
- Configurable as boost, SEPIC, or inverting converter
- Integrated 65V power switch
- Soft-start and synchronization features
Applications
- Inverting converters generating negative outputs from positive inputs
- Boost applications for voltage step-up
- SEPIC configurations for wide input voltage ranges
- Battery stabilizers handling transient conditions
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging versus tube variants like #PBF. Confirm the -1 designation corresponds to the 0.25A switch rating rather than higher current options. Ensure the DFN-8 package dimensions match your PCB footprint requirements. Check RoHS compliance status through official Analog Devices documentation before finalizing procurement.
Selection Notes
Select this component when a compact solution requires a 65V rated internal switch with moderate current capability. The adjustable frequency allows optimization for efficiency or size. Verify that the 0.25A limit meets load requirements, as other family members offer higher currents. Ensure input voltage stays within the 2.55V to 40V range for proper operation.
Part Context
Part of the LT8570 family of versatile DC/DC converters. The -1 suffix typically denotes the 0.25A switch variant, distinguishing it from higher current versions. The IDD-1 code specifies the industrial temperature range and DFN-8 package. This series provides flexible topology support for various power conversion needs.
Replacement Considerations
LT8570EDD-1#PBF shares similar electrical characteristics but differs in packaging (tube vs. reel). LT8570HDD-1#PBF offers extended temperature range. Verify pinout compatibility and thermal performance when substituting. Ensure the replacement part maintains the 0.25A switch rating if current capacity is critical.
