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LTC3459

Features: ` Small Solution Size` >85% Efficiency over Wide Load Range` Internal Synchronous Rectifier` VIN Range: 1.5V to 5.5V` 5V at 30mA from 3.3V Input` 3.3V at 20mA from 2 AA Cell Input` Programmable Output Voltages Up to 10V` Burst Mode® Operation` Inrush Current Limiting` Output Disco...

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SeekIC No. : 004402257 Detail

LTC3459: Features: ` Small Solution Size` >85% Efficiency over Wide Load Range` Internal Synchronous Rectifier` VIN Range: 1.5V to 5.5V` 5V at 30mA from 3.3V Input` 3.3V at 20mA from 2 AA Cell Input` Prog...

LTC3459 Data Sheet

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Part Number:
LTC3459
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:

` Small Solution Size
` >85% Efficiency over Wide Load Range
` Internal Synchronous Rectifier
` VIN Range: 1.5V to 5.5V
` 5V at 30mA from 3.3V Input
` 3.3V at 20mA from 2 AA Cell Input
` Programmable Output Voltages Up to 10V
` Burst Mode® Operation
` Inrush Current Limiting
` Output Disconnect in Shutdown
` Ultralow Quiescent (10A) and Shutdown (<1A) Currents
` Low Profile (1mm) SOT-23 Package


Application

· General Purpose Micropower Boost
· Digital Cameras
· PDAs
· LCD Bias
· Small OLED Displays
· Supercap Charging


Pinout

Connection Diagram


Specifications

Referred to GND (Note 1)
VIN, FB Voltage ......................................... 0.3V to 7V
VOUT, SHDN Voltage ................................ 0.3V to 10V
SW Voltage .............................................. 0.3V to 12V
Operating Temperature Range
    (Notes 2, 3) ......................................... 40 to 85
Storage Temperature Range ................ 65 to 150
Lead Temperature (Soldering, 10 sec)................... 300



Description

The LTC®3459 is a low current, high efficiency synchronous boost converter intended for low power, size constrained portable applications. The LTC3459 can be powered from a single lithium ion battery, a 2- to 3-cell stack of Alkaline or Nickel batteries, or any low impedance voltage source between 1.5V and 5.5V. The output is programmable via an external divider between 2.5V and 10V. Although the part is primarily intended for boost applications, VOUT will maintain regulation below VIN (at reduced efficiency).

The LTC3459 offers Burst Mode operation with a fixed peak current, providing high conversion efficiency over a wide range of load currents. During start-up, inductor current is controlled preventing the inrush surge current found in many boost converters. In shutdown the output is disconnected from the input and quiescent current is reduced to <1A.

The LTC3459 is offered in a low profile (1mm) 6-pin SOT-23 (ThinSOTTM) package allowing a tiny footprint for the total solution.




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