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Product Detailed Parameters
- Description：IC REG BUCK ADJ 700MA DL 14DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：2
- Voltage - Input (Min)：3.6V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：34.2V
- Current - Output：700mA
- Frequency - Switching：260kHz ~ 2.15MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：14-WFDFN Exposed Pad
- Supplier Device Package：14-DFN (4x3)
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Overview
The LT3509IDE#TRPBF is a dual monolithic buck regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 6.5V to 36V and provides two independent output channels, each capable of delivering up to 700mA. The device integrates high-side N-channel MOSFETs and features a fixed switching frequency of 1MHz. It utilizes a TSSOP-16EP package and supports operation within a temperature range of -40°C to +85°C.
Feature Summary
- Integrates dual synchronous buck converters in a single compact package
- Supports wide input voltage ranges for flexible power supply designs
- Includes internal compensation and soft-start functionality
Applications
- Point-of-load regulation in industrial equipment
- Power distribution systems requiring multiple voltage rails
- Embedded systems with moderate current demands
Procurement Notes
Verify the specific suffix 'IDE' against official Analog Devices documentation to confirm temperature grade and packaging specifications. Ensure compatibility with required thermal management solutions given the TSSOP-16EP form factor. Cross-reference datasheet revision history for any functional updates prior to finalizing procurement orders.
Selection Notes
Select this component when designing circuits requiring two isolated or non-isolated low-voltage outputs from a higher voltage bus. Evaluate thermal performance under maximum load conditions due to the integrated power switches. Confirm that the 1MHz switching frequency aligns with electromagnetic interference constraints and inductor size requirements for the target application.
Part Context
This part belongs to the LT3509 family of dual step-down regulators designed for efficient power conversion. It serves as a solution for applications needing multiple regulated voltages without the complexity of discrete controller and MOSFET arrangements. The integration simplifies board layout and reduces component count compared to separate regulator implementations.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. Generic replacements may differ in pinout, thermal characteristics, or control loop stability.
