LT1725IS#PBF

$9.51

Description：IC REG CTRLR FLYBACK 16SOIC
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:f59330074b57 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR FLYBACK 16SOIC
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Output Type：Transistor Driver
Function：Step-Up/Step-Down
Output Configuration：Positive or Negative, Isolation Capable
Topology：Flyback
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：9.7V ~ 22V
Frequency - Switching：90kHz ~ 115kHz
Duty Cycle (Max)：90%
Synchronous Rectifier：No
Clock Sync：No
Serial Interfaces：-
Control Features：Enable, Soft Start
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：16-SOIC (0.154", 3.90mm Width)
Supplier Device Package：16-SO
Grade：-
Qualification：-

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LT1725IS#PBF

Overview

The LT1725IS#PBF is a monolithic switching regulator controller designed for isolated flyback topologies. It operates within a switching frequency range of 50 kHz to 250 kHz and supports a maximum duty cycle of 90%. The device features a shutdown function and requires a supply voltage between 9.7 V and 22 V, with a typical operating current of 10 mA. It provides one output channel capable of delivering up to 500 mA at 12.1 V. The component is housed in a 16-SOIC package and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

Designed specifically for general-purpose isolated flyback converter applications
Integrates a shutdown pin for power management control
Supports flexible switching frequency adjustment from 50 kHz to 250 kHz
Capable of driving external MOSFET gates for step-up or step-down conversion

Applications

Isolated DC-DC converters
General-purpose flyback power supplies
Step-up/step-down converter circuits

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure the procurement source provides valid RoHS compliance data and confirms the component status as active. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before purchase.

Selection Notes

Select this controller when designing isolated flyback converters requiring adjustable switching frequencies. Consider the 16-SOIC package dimensions and thermal characteristics for PCB layout. Evaluate the input voltage range requirements against the specified 9.7 V to 22 V operation. Confirm that the external MOSFET gate drive capabilities meet the load requirements of the target application.

Part Context

The LT1725 series consists of switching regulators optimized for isolated flyback topologies. The IS variant denotes industrial temperature rating and SOIC packaging. This component belongs to the broader PMIC category under DC-DC switching controllers. It serves as a core control element for power management systems requiring galvanic isolation and efficient energy transfer.