LT1931 IC 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT

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LT1931

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Power Management IC

Manufacturer / Brand: AD

Details: 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT

Series: LT1931

Quantity Available: Over 78280 pieces

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Datasheet for LT1931:

Product Parameters

Manufacturer Part Number : LT1931
Manufacturer : AD
Description : 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT
Series : LT1931
Reference Price : USD 1.664
Our Price : We have a better price, contact us by email
Product Type : Switching Regulators
Function : Inverting Regulators
Current Suggest : Production
Status : Production
RoHS Status: -
Voltage: -
Feature: -
Package Case: -
Temperature Range: -
Packing: Reel/Tray/Tube
Standard Packing Quantity: -
Country of Origin: -
Other Part Number : LT1931
Shipping methods : DHL FEDEX UPS TNT
Delivery Time : Ship within 1 day.
Manufacturer Production time : 6-8 weeks (Normally have stocks)
Weight : 0.001KG

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Features and Benefits of LT1931

Product Detailed Description for LT1931

The LT1931/LT1931A are the industry’s highest power inverting SOT-23 current mode DC/DC converters. Both parts include a 1A integrated switch allowing high current outputs to be generated in a small footprint. The LT1931 switches at 1.2MHz while the LT1931A switches at 2.2MHz. These high speeds enable the use of tiny, low cost capacitors and inductors 2mm or less in height. The LT1931 is capable of generating –5V at 350mA or –12V at 150mA from a 5V supply, while the LT1931A can generate –5V at 300mA using significantly smaller inductors. Both parts are easy pin-for-pin upgrades for higher power LT1611 applications.

The LT1931/LT1931A operate in a dual inductor inverting topology that filters both the input side and output side current. Very low output voltage ripple approaching 1mV_P-P can be achieved when ceramic output capacitors are used. Fixed frequency switching ensures a clean output free from low frequency noise typically present with charge pump solutions. The low impedance output remains within 1% of nominal during large load steps. The 36V switch allows V_IN to V_OUT differential of up to 34V.

The LT1931/LT1931A are available in the 5-lead ThinSOT package.

Applications

Disk Drive MR Head Bias
Digital Camera CCD Bias
LCD Bias
GaAs FET Bias
Local Low Noise/Low Impedance Negative Supply

Lifecycle information of LT1931

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

LT1931 More photos

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