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Product Detailed Parameters
- Description：IC REG BST CHARGE PUMP ADJ 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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#PBF is a PWM DC/DC converter from Analog Devices Inc., housed in an 8-WFDFN package. It features a 375mA switch current capability and supports Boost, Charge Pump, Cuk, and SEPIC topologies. The device accepts an input voltage range of 2.55V to 40V and provides an adjustable output voltage from 0.003V to 65V. Operating frequencies range from 200kHz to 1.5MHz with a typical static current of 1.2mA. It functions as a positive or negative regulator within a temperature range of -40°C to +125°C.
Feature Summary
- Supports multiple conversion topologies including boost, charge pump, Cuk, and SEPIC configurations.
- Integrates a high-voltage power switch capable of handling up to 65V.
- Provides flexible output configuration for both positive and negative voltage regulation.
- Features adjustable switching frequency to optimize efficiency and component size.
Applications
- Inverting converters generating negative outputs from positive inputs
- Boost converters for stepping up lower input voltages
- SEPIC converters for wide input voltage ranges
- Charge pump applications requiring specific voltage multiplication
Procurement Notes
Verify the exact suffix and package type against the official datasheet before ordering. Confirm availability status with authorized distributors as supply levels may vary. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.
Selection Notes
Select this component when a single IC needs to support diverse topologies like boost, SEPIC, or inverting modes. The adjustable frequency allows optimization for specific EMI or size constraints. Verify that the 375mA switch current meets the load requirements and that the 40V maximum input voltage is sufficient for the source circuit.
Part Context
This part belongs to the LT8570 family of versatile DC/DC converters. The 'IDD' suffix indicates the 8-WFDFN package variant, while '#PBF' denotes lead-free packaging. The '-1' suffix typically specifies internal resistor values or specific performance grades within the series.
Replacement Considerations
Check for other LT8570 variants with different packages (e.g., EMS8) if footprint changes are acceptable. Verify functional compatibility with similar multi-topology converters from other manufacturers if pinouts differ.
