LT3750 - Capacitor Charger Controller
Datasheet Documentation
Datasheet
Design Note
Reliability Data
LT Journal
Press Release
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Overview

Features

Typical Application

LT3750 Typical Application
LT3750 Typical Application

Description

The LT3750 is a flyback converter designed to rapidly charge large capacitors to a user-adjustable target voltage. A patented boundary mode control scheme* minimizes transition losses and reduces transformer size. The transformer turns ratio and two external resistors easily adjust the output voltage. A low 78mV current sense accurately limits peak switch current and also helps to maximize efficiency. With a wide input voltage range, the LT3750 can operate from a variety of power sources. A typical application can charge a 100μF capacitor to 300V in less than 300ms.

The CHARGE pin gives full control of the LT3750 to the user. The DONE pin indicates when the capacitor has reached its programmed value and the part has stopped charging.

Packaging

MS-10

LT3750 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
(1-99)		 Price
(1k)*
LT3750EMS#PBF MSOP 10 E $5.00 $3.50
LT3750EMS#TRPBF MSOP 10 E $3.56
LT3750EMS MSOP 10 E $10.00 $7.00
LT3750EMS#TR MSOP 10 E $7.12
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.


Part Number Description Price Documentation
DC891A LT3750EMS Demo Board | Capacitor Charger, 6V to 20VIN, 300VOUT, 2.2A Charging Current $125.00