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Part Number: LT3461A
Description: The LT®3461/LT3461A are general purpose fixed frequency current mode step-up DC/DC converters. Bot...
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LT3461A
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DataSheet
General Description
LT3461A General Description
The LT®3461/LT3461A are general purpose fixed frequency current mode step-up DC/DC converters. Both devices feature an integrated Schottky and a low VCESAT switch allowing a small converter footprint and lower parts cost. The LT3461 switches at 1.3MHz while the LT3461A switches at 3MHz. These high switching frequencies enable the use of tiny, low cost and low height capacitors and inductors. The constant switching frequency results in predictable output noise that is easy to filter, and the inductor based topology ensures an input free from switching noise typically present with charge pump solutions. The high voltage switch in the LT3461/LT3461A is rated at 40V making the device ideal for boost converters up to 38V.
The LT3461/LT3461A are available in a low profile (1mm) SOT-23 package.
LT3461A Maximum Ratings
Input Voltage (VIN) .................................................. 16V
VOUT, SW Voltage .................................................... 40V
FB Voltage ................................................................. 5V
SHDN Voltage .......................................................... 16V
Operating Ambient
Temperature Range (Note 2) .................. 40°C to 85°C
Maximum Junction Temperature .......................... 125°C
Storage Temperature Range ................. 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
LT3461A Features
Integrated Schottky Rectifier
Fixed Frequency 1.3MHz/3MHz Operation
High Output Voltage: Up to 38V
Low VCESAT Switch: 260mV at 250mA
12V at 70mA from 5V Input
5V at 115mA from 3.3V Input
Wide Input Range: 2.5V to 16V
Uses Small Surface Mount Components
Low Shutdown Current: <1µA
Soft-Start
Low Profile (1mm) SOT-23 (ThinSOTTM) Package
Fixed Frequency 1.3MHz/3MHz Operation
High Output Voltage: Up to 38V
Low VCESAT Switch: 260mV at 250mA
12V at 70mA from 5V Input
5V at 115mA from 3.3V Input
Wide Input Range: 2.5V to 16V
Uses Small Surface Mount Components
Low Shutdown Current: <1µA
Soft-Start
Low Profile (1mm) SOT-23 (ThinSOTTM) Package
LT3461A Typical Application
Digital Cameras
CCD Bias Supply
XDSL Power Supply
TFT-LCD Bias Supply
Local 5V or 12V Supply
Medical Diagnostic Equipment
Battery Backup
CCD Bias Supply
XDSL Power Supply
TFT-LCD Bias Supply
Local 5V or 12V Supply
Medical Diagnostic Equipment
Battery Backup
LT3461A
PDF/DataSheet Download
- Datasheet: LT3461A
- File Size: 152934 KB
- Manufacturer: LINER [Linear Technology]
- Click here to Download
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