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LT1946

Features: 1.5A, 36V Internal Switch 1.2MHz Switching Frequency Integrated Soft-Start Function Output Voltage Up to 34V Low VCESAT Switch: 300mV at 1.5A (Typ) 8V at 430mA from a 3.3V Input Small 8-Lead MSOP PackageApplication TFT-LCD Bias SuppliesGPS Receivers DSL Modems Local Power SuppliesPinout...

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SeekIC No. : 004400928 Detail

LT1946: Features: 1.5A, 36V Internal Switch 1.2MHz Switching Frequency Integrated Soft-Start Function Output Voltage Up to 34V Low VCESAT Switch: 300mV at 1.5A (Typ) 8V at 430mA from a 3.3V Input Small 8-L...

LT1946 Data Sheet

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Part Number:
LT1946
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

1.5A, 36V Internal Switch
1.2MHz Switching Frequency
Integrated Soft-Start Function
Output Voltage Up to 34V
Low VCESAT Switch: 300mV at 1.5A (Typ)
8V at 430mA from a 3.3V Input
Small 8-Lead MSOP Package


Application

TFT-LCD Bias Supplies
GPS Receivers
DSL Modems
Local Power Supplies


Pinout

Connection Diagram


Specifications

VIN Voltage ..............................................................  16V
SW Voltage ...............................................  0.4V to 36V
FB Voltage ..............................................................  2.5V
SHDN Voltage ..........................................................  16V
Current Into FB Pin ...............................................  ±1mA
Maximum Junction Temperature ..........................  125°C
Operating Temperature Range (Note 2).40°C to 85°C
Storage Temperature Range ............... 65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................  300°C


Description

The LT®1946 is a fixed frequency step-up DC/DC convertercontaining an internal 1.5A, 36V switch. Capable of gener-ating 8V at 430mA from a 3.3V input, the LT1946 is idealfor large TFT-LCD panel power supplies. The LT1946switches at 1.2MHz, allowing the use of tiny, low profileinductors and low value ceramic capacitors. Loop com-pensation can be either internal or external, giving the userflexibility in setting loop compensation and allowing opti-mized transient response with low ESR ceramic outputcapacitors. Soft-start is controlled with an external capaci-tor, which determines the input current ramp rate duringstart-up.

The 8-lead MSOP package and high switching frequencyensure a low profile overall solution less than 1.2mm high.




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