LT1946A

Features: 1.5A, 36V Internal Switch 2.7MHz Switching Frequency Integrated Soft-Start Function Adjustable Output from VIN to 35V Low VCESAT Switch: 300mV at 1.5A (Typical) 12V at 430mA from a 5V Input Small Thermally Enhanced 8-Lead MSOP PackageApplication TFT-LCD Bias SuppliesGPS Receivers DSL Mo...

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SeekIC No. : 004400929 Detail

LT1946A: Features: 1.5A, 36V Internal Switch 2.7MHz Switching Frequency Integrated Soft-Start Function Adjustable Output from VIN to 35V Low VCESAT Switch: 300mV at 1.5A (Typical) 12V at 430mA from a 5V Inp...

floor Price/Ceiling Price

Part Number:
LT1946A
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/23

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Product Details

Description



Features:

1.5A, 36V Internal Switch
2.7MHz Switching Frequency
Integrated Soft-Start Function
Adjustable Output from VIN to 35V
Low VCESAT Switch: 300mV at 1.5A (Typical)
12V at 430mA from a 5V Input
Small Thermally Enhanced 8-Lead MSOP Package



Application

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



Pinout

  Connection Diagram


Specifications

VIN Voltage .............................................................. 16V
SW Voltage ................................................0.4V to 36V
FB Voltage .............................................................. 2.5V
Current into FB Pin ............................................... ±1mA
SHDN Voltage .......................................................... 16V
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®1946A is a fixed frequency step-up DC/DC con-verter containing an internal 1.5A, 36V switch. Capable ofgenerating 12V at 430mA from a 5V input, the LT1946A isideal for powering large TFT-LCD panels. The LT1946Aswitches at 2.7MHz, 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 switchingfrequency ensure a low profile overall solution less than1.1mm high.




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