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Product Detailed Parameters
- Description：IC REG BOOST CUK ADJ 500MA 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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：500mA (Switch)
- Frequency - Switching：200kHz ~ 1.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°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 LT8570HDD#PBF is a PWM DC/DC converter manufactured by Analog Devices Inc., housed in an 8-lead DFN package. It integrates a 65V power switch and supports Boost, SEPIC, and Inverting topologies. The device operates with an input voltage range of 1.204 V to 65 V, delivering up to 200 mA output current. Key electrical parameters include a 1.5 MHz switching frequency, 1.2 mA quiescent current, and operation across a temperature range of -40°C to +125°C.
Feature Summary
- Configurable as a boost, SEPIC, or inverting DC/DC converter
- Integrated 65V power switch for high-voltage applications
- Fixed 1.5 MHz switching frequency for compact passive design
Applications
- Inverting converter generating negative voltages from positive inputs
- Boost converter applications requiring wide input ranges
- SEPIC topology implementations for varying input/output relationships
Procurement Notes
Verify availability status directly with Analog Devices or authorized distributors, as supply constraints may apply. Confirm the specific suffix matches the required pinout and thermal characteristics. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the datasheet revision date to ensure compatibility with your design specifications.
Selection Notes
Select this component when a fixed 1.5 MHz frequency is suitable for the application's EMI and size constraints. The integrated 65V switch allows handling higher input voltages without external protection. Consider the 200 mA output limit against load requirements. The DFN-8 package offers a compact footprint but requires adequate thermal management on the PCB.
Part Context
This part belongs to the LT8570 family of single-switch DC/DC converters. Variants within the series differ primarily in internal switch current ratings and switching frequencies. The DD suffix indicates the DFN-8 package type. Other members like LT8570IDD feature different current capabilities or frequencies while maintaining similar functional architectures.
Replacement Considerations
LT8570IDD-1#PBF: Features a 0.25A switch and 1MHz frequency. LT8570EMS8E-1#PBF: Features a 0.25A switch and 1MHz frequency in MSOP package. Verify pinout compatibility and thermal performance differences before substitution.
