ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG BUCK ADJ DL 28TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：2
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：35V
- Voltage - Output (Min/Fixed)：0.6V, 1.265V
- Voltage - Output (Max)：33.97V
- Current - Output：1.1A, 1.3A
- Frequency - Switching：500kHz ~ 2MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：28-TSSOP-EP
- Grade：-
- Qualification：-
Download product information
Overview
The LT3640IFE#PBF is a dual monolithic buck regulator featuring integrated power-on reset and watchdog timer functions. It operates with an input voltage range of 4 V to 35 V, delivering up to 1.3 A output current per channel. The device utilizes a fixed 2.5 MHz switching frequency and maintains a quiescent current of 275 uA. It supports outputs up to 33.97 V and is housed in a 28-lead TSSOP-EP package.
Feature Summary
- Integrates two independent synchronous buck converters within a single compact package.
- Includes built-in power-on reset generator and programmable watchdog timer for system protection.
- Supports high-frequency operation at 2.5 MHz to minimize external passive component size.
Applications
- Industrial control systems requiring redundant or multi-rail power distribution
- Embedded computing platforms needing integrated fault monitoring
- Telecommunications infrastructure equipment
Procurement Notes
Verify the specific suffix #PBF indicates lead-free RoHS compliance before ordering. Confirm the TSSOP-EP-28 package dimensions match your PCB footprint requirements. Ensure the 4 V to 35 V input range aligns with your system's supply rails. Check for any recent PCN updates regarding manufacturing site changes.
Selection Notes
Select this component when dual isolated outputs are required alongside system supervision features. The 2.5 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the thermal performance of the exposed pad in your layout design. Verify that the 1.3 A per-channel rating meets the peak load demands of both rails.
Part Context
This part belongs to the LT3640 family of dual buck regulators from Analog Devices. It is designed for applications requiring space-constrained power solutions with enhanced reliability features. The integration of reset and watchdog functions reduces the need for external supervisory ICs.
Replacement Considerations
Public confirmed substitute part numbers: None identified in available documentation.
