LTC3548EDD The LT LTC3548EDD is a dual, synchronous step-down DC/DC converter with a fixed 2.25MHz switching frequency. It offers high efficiency and low quiescent current for low power applications.
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LTC3548EDD

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Mfr Name: LT
LT
The LT LTC3548EDD is a dual, synchronous step-down DC/DC converter with a fixed 2.25MHz switching frequency. It offers high efficiency and low quiescent current for low power applications.
✓ Total Stock: 20,950 pcs

LTC3548EDD Available from 1 distributor

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20,950 pcs
20950 pcs On Request 1 On Request On Request 06+ On Request On Request

LTC3548EDD Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Duty Cycle
Efficiency
Input Voltage
Mounting Type
Output Current
Package / Case
Quiescent Current

LTC3548EDD Description

Short technical summary and product information.

The LTC3548EDD from Linear Technology (LT) is a dual, fixed output, constant-frequency, synchronous step-down DC/DC converter. Designed for low power applications, it operates from a 2.5V to 5.5V input voltage range.

 

This regulator features a constant 2.25MHz switching frequency, enabling the use of small, low-cost inductors and capacitors with a profile of 1mm or less. It achieves high efficiency of up to 95% and boasts very low quiescent current of only 40µA. The device supports output currents of 1.8V at 800mA and 1.575V at 400mA, with high switch currents of 1.2A and 0.7A respectively. It also includes short-circuit protection and 100% duty cycle low dropout operation.

 

The LTC3548EDD is available in a small, thermally enhanced 3mm x 3mm DFN package, making it suitable for space-constrained designs. Its current mode operation ensures excellent line and load transient response. The ultralow shutdown current further enhances its suitability for battery-powered devices.

LTC3548EDD Quick Information

Product Type: DC/DC Switching Regulator
Series: LTC3548-1
Canonical Name: Dual Synchronous Fixed Output 2.25MHz Step-Down DC/DC Regulator
Subcategory: Step-Down (Buck) Regulator

LTC3548EDD Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LTC3548EDD Features

  • Dual synchronous step-down DC/DC converter.
  • High efficiency up to 95%.
  • Low quiescent current of 40µA.
  • Fixed 2.25MHz switching frequency.
  • Small 3mm x 3mm DFN package.

LTC3548EDD Applications

  • Ideal for battery-powered portable devices.
  • Used in dual-rail power supply designs.
  • Suitable for low-voltage digital circuits.
  • Applicable in handheld instrumentation.
  • Used in wireless communication equipment.

LTC3548EDD FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LTC3548EDD?

2.5V to 5.5V.

What are the output voltages of the LTC3548EDD?

1.8V and 1.575V.

What is the output current capability of the LTC3548EDD?

0.8A on the first output and 0.4A on the second output.

What is the switching frequency of the LTC3548EDD?

2.25MHz.

What is the operating temperature range of the LTC3548EDD?

0°C to 85°C.

What package is the LTC3548EDD available in?

10-WFDFN exposed pad (3x3 DFN-10).

What is the efficiency of the LTC3548EDD?

Up to 95%.

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