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Product Detailed Parameters
- Description：IC REG DL BOOST/LNR 2.2MHZ 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Topology：Step-Up (Boost) (1), Linear (LDO) (1)
- Number of Outputs：2
- Frequency - Switching：2.2MHz
- Voltage/Current - Output 1：16.1V, 300mA
- Voltage/Current - Output 2：15V, 45mA
- Voltage/Current - Output 3：-
- w/LED Driver：No
- w/Supervisor：No
- w/Sequencer：No
- Voltage - Supply：2.7V ~ 4.8V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (2x2)
- Grade：-
- Qualification：-
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Overview
The LT3048IDC-15 is a dual-output power management IC combining a boost switching regulator and a low-noise LDO. It operates from an input voltage range of 2.7 V to 4.8 V. The boost stage provides up to 300 mA, while the LDO delivers 45 mA at a fixed 15 V output. Key electrical parameters include a 2.2 MHz switching frequency, a maximum operating temperature of +125 °C, and a minimum of -40 °C. It utilizes an 8-lead DFN package with exposed pad for surface mount installation.
Feature Summary
- Integrates a high-efficiency boost converter with a subsequent low-noise linear regulator in a single compact package.
- Provides independent control over switching frequency and output voltage regulation for optimized noise performance.
- Includes integrated shutdown functionality to minimize quiescent current consumption during inactive periods.
Applications
- Bias generation for precision analog circuits requiring clean power rails
- Portable instrumentation systems with strict size constraints
- Battery-powered devices requiring efficient step-up conversion followed by low-noise regulation
Procurement Notes
Verify the specific suffix (#TRPBF or #TRMPBF) against the required reel quantity and tape-and-reel specifications. Confirm RoHS compliance status directly with the manufacturer documentation. Ensure the ordering part number matches the exact thermal and electrical requirements for the target application environment.
Selection Notes
Select this component when both efficient voltage boosting and ultra-low noise regulation are required within a limited board area. Evaluate the trade-off between the boost converter's switching frequency and the resulting filter component sizes versus the LDO's noise suppression capabilities. Ensure the input voltage source remains within the specified 2.7 V to 4.8 V operational window.
Part Context
This device belongs to the LT3048 family of dual-output regulators designed for space-constrained applications. It differs from standard single-output regulators by integrating two distinct regulation topologies. The IDC designation indicates the 8-lead DFN package type, while the -15 suffix specifies the fixed 15 V output voltage of the linear regulator section.
Replacement Considerations
LT3048IDC-15#TRPBF
FAQ
What is the topology configuration of the LT3048?
It combines a boost switching regulator followed by a low-dropout linear regulator (LDO).
Does the LT3048 support external frequency adjustment?
Yes, the switching frequency can be set using an external resistor.
