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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 1.5A 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：4V
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：1.5A
- Frequency - Switching：500kHz
- Synchronous Rectifier：No
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
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Overview
The LT1507CS8-3.3#TRPBF is a monolithic step-down switching regulator manufactured by Analog Devices Inc., operating in mono buck mode with a fixed 3.3V output. It delivers an output current of 1.5A and functions within an input voltage range of 4V to 15V. The device integrates a 500kHz switching frequency, supports shutdown functionality, and operates at a static current of 4mA. Packaged in an SOIC-8 surface-mount format, it is rated for commercial temperatures between 0°C and +70°C.
Feature Summary
- Integrates a high-efficiency buck converter topology for DC-DC step-down regulation
- Includes internal power switch capable of delivering up to 1.5A load current
- Features a fixed 3.3V output configuration eliminating external feedback resistor requirements
- Supports system power management through integrated shutdown control pin
Applications
- Portable battery-powered equipment requiring efficient voltage conversion
- Embedded systems utilizing 5V or 12V bus architectures
- General-purpose point-of-load regulation for digital logic circuits
Procurement Notes
Verify the specific suffix #TRPBF confirms tape-and-reel packaging rather than tube distribution. Confirm the CS8 variant meets commercial temperature specifications (0°C to +70°C) against industrial requirements. Cross-reference the manufacturer datasheet to ensure the fixed 3.3V output aligns with target circuit design constraints before finalizing procurement orders.
Selection Notes
Select this component when a fixed 3.3V rail is required from higher input voltages without external programming resistors. The 1.5A capacity suits moderate load applications where synchronous rectification is not mandatory. Evaluate the 500kHz frequency against EMI constraints and inductor size limitations compared to lower-frequency alternatives in the same product family.
Part Context
This part belongs to the LT1507 series of monolithic step-down switching regulators designed for cost-sensitive applications. Unlike adjustable variants, the -3.3 suffix denotes a factory-set output voltage. The CS8 package designation indicates a commercial grade temperature range, distinguishing it from the IS8 industrial grade counterpart within the same physical footprint.
Replacement Considerations
LT1507IS8-3.3#TRPBF offers identical electrical performance with extended industrial temperature rating (-40°C to +85°C). LT1507CS8 provides the same functionality in tube packaging instead of tape-and-reel. Verify thermal dissipation requirements remain within limits when substituting between package styles.
