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Product Detailed Parameters
- Description：IC REG BUCK ADJ 600MA 6DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3.6V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：1.245V
- Voltage - Output (Max)：33.84V
- Current - Output：600mA
- Frequency - Switching：500kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TA)
- Mounting Type：Surface Mount
- Package / Case：6-WFDFN Exposed Pad
- Supplier Device Package：6-DFN (2x3)
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Overview
The LT1933HDCB#TRPBF is a current mode PWM step-down DC/DC converter featuring an internal 0.75A power switch, housed in a compact 6-lead DFN package. It supports a wide input voltage range from 3.6V to 36V, enabling regulation from diverse sources such as automotive batteries and industrial supplies. The device operates at a fixed frequency of 500kHz, facilitating the use of small inductors and ceramic capacitors for low output ripple. Key electrical characteristics include cycle-by-cycle current limit protection, soft-start functionality to prevent input surge, and a shutdown current below 2μA for efficient battery management.
Feature Summary
- Integrates a 0.75A power switch within a miniature footprint
- Supports wide input voltage ranges for versatile power source compatibility
- Provides cycle-by-cycle current limiting for short-circuit protection
- Features ultra-low shutdown current for extended battery life
Applications
- Automotive battery-powered systems
- Industrial 24V supply regulation
- Unregulated wall transformer applications
- Battery-powered portable electronics
Procurement Notes
Verify the specific suffix HDCB corresponds to the 6-pin DFN package configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations prior to procurement. Ensure the ordering part number matches the exact thermal and mechanical specifications required for the target PCB layout to avoid integration issues.
Selection Notes
Select this component for designs requiring high efficiency in a minimal board area with moderate current demands up to 600mA. The fixed 500kHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the input voltage range relative to the source availability and ensure adequate thermal dissipation capabilities are maintained within the DFN package constraints during operation.
Part Context
This part belongs to the LT1933 family of step-down switching regulators manufactured by Analog Devices. It shares core architectural features with other variants in the series but differs in packaging, specifically utilizing the DFN form factor instead of SOT-23. This family is designed for applications prioritizing size reduction and cost-efficiency while maintaining robust power management performance.
Replacement Considerations
LT1933HS6-TRPBF: Identical functional specifications but utilizes a SOT-23 package instead of DFN. Requires PCB layout modification due to different pinout and thermal characteristics.
