LT1737IGN The LT1737IGN is an isolated flyback controller IC from LT. It operates within a supply voltage range of 4.5V to 20V and features a switching frequency from 50kHz to 250kHz.
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LT1737IGN

Available from 1 distributors
Mfr Name: LT
LT
The LT1737IGN is an isolated flyback controller IC from LT. It operates within a supply voltage range of 4.5V to 20V and features a switching frequency from 50kHz to 250kHz.
✓ Total Stock: 2,025 pcs

LT1737IGN Available from 1 distributor

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2,025 pcs
2025 pcs On Request 1 On Request On Request 03+ On Request On Request

LT1737IGN Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Mounting Type
Package / Case
Storage Temperature
Supply Voltage

LT1737IGN Description

Short technical summary and product information.

The LT1737IGN is a monolithic switching regulator controller designed for isolated flyback topologies. It drives an external MOSFET and can deliver load power up to tens of Watts. The device operates with a supply voltage range of 4.5V to 20V and offers a switching frequency adjustable from 50kHz to 250kHz via an external capacitor.

 

Key features include current mode switching for excellent line regulation and the ability to maintain regulation well into discontinuous mode. It senses the output voltage directly from the primary side winding, eliminating the need for an optoisolator. Optional features like load compensation and undervoltage lockout are also supported.

 

Available in 16-pin GN and SO packages, the LT1737IGN is suitable for applications such as isolated flyback switching regulators, medical instruments, and instrumentation power supplies.

LT1737IGN Quick Information

Product Type: Isolated Flyback Controller
Canonical Name: LT1737 Isolated Flyback Controller IC
Subcategory: Isolated Flyback Controller

LT1737IGN Compliance

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

LT1737IGN Features

  • Drives external power MOSFET.
  • Supply voltage range 4.5V to 20V.
  • Switching frequency 50kHz to 250kHz.
  • Senses output voltage directly from primary side.
  • Available in 16-pin GN and SO packages.

LT1737IGN Applications

  • Used in isolated flyback switching regulators.
  • Suitable for medical instrument power supplies.
  • Ideal for instrumentation power supply designs.
  • Converts 12V-18V to isolated 15V output.

LT1737IGN FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range for the LT1737IGN?

The supply voltage range for the LT1737IGN is 4.5V to 20V.

What is the switching frequency range of the LT1737IGN?

The switching frequency range of the LT1737IGN is 50kHz to 250kHz with an external capacitor.

What is the operating junction temperature range for the LT1737C?

The operating junction temperature range for the LT1737C is 0°C to 100°C.

What is the operating junction temperature range for the LT1737I?

The operating junction temperature range for the LT1737I is –40°C to 125°C.

What is the storage temperature range for the LT1737IGN?

The storage temperature range for the LT1737IGN is –65°C to 150°C.

What is the typical quiescent current (IQ) in shutdown mode for the LT1737IGN?

The typical quiescent current (IQ) in shutdown mode for the LT1737IGN is 50µA.

What packages is the LT1737IGN available in?

The LT1737IGN is available in 16-pin GN and SO packages.

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