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Product Detailed Parameters
- Description：IC REG DL BUCK/LINEAR SYNC 10DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Topology：Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs：2
- Frequency - Switching：2.25MHz
- Voltage/Current - Output 1：0.8V ~ 5V, 500mA
- Voltage/Current - Output 2：0.4V ~ 4.1V, 300mA
- Voltage/Current - Output 3：-
- w/LED Driver：No
- w/Supervisor：No
- w/Sequencer：Yes
- Voltage - Supply：0.9V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LTC3541EDD#PBF is a high-efficiency power management IC featuring a synchronous buck converter and a very low dropout (VLDO) regulator in a DFN-10 package. It accepts an input voltage range of 2.7 V to 5.5 V. The buck output provides up to 500 mA, while the VLDO supplies up to 300 mA. Fixed output options include 1.575 V and 1.8 V. Operating at a 2.25 MHz switching frequency, it draws 285 uA quiescent current. The device supports shutdown mode and operates between -40°C and +85°C.
Feature Summary
- Integrates a high-efficiency synchronous buck converter with a separate VLDO regulator for efficient multi-rail power distribution.
- Operates from a single lithium-ion battery or 5V supply without requiring external compensation components.
- Supports independent control of each regulator via dedicated Run pins for flexible power sequencing.
Applications
- Battery-powered portable electronic devices
- Hand-held instrumentation systems
- Embedded computing modules
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required package and temperature grade. Request original manufacturer documentation to validate RoHS compliance and traceability. Ensure storage conditions adhere to moisture sensitivity levels specified in the datasheet to prevent soldering defects during assembly.
Selection Notes
Select this component when designing circuits requiring two distinct regulated rails from a single input source within the 2.7V to 5.5V range. The integrated topology reduces bill of materials count compared to discrete solutions. Verify that the combined load requirements do not exceed the thermal limits of the DFN-10 package under maximum ambient temperatures.
Part Context
This part belongs to the LTC3541 family of dual-output regulators designed for space-constrained applications. It complements other Analog Devices PMICs by offering a compact solution for systems needing both high-current buck conversion and clean LDO regulation. The DFN-10 footprint facilitates automated surface-mount assembly.
Replacement Considerations
Consult official cross-reference lists for verified substitutes such as the LTC3541EDD-1#PBF or LTC3541EDD-2#PBF if different fixed output voltages are required. Ensure any replacement maintains the same DFN-10 pinout and electrical specifications to guarantee compatibility.
