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LT3473A

Features: ` Tiny Solution Size` Low Quiescent Current: 150A in Active Mode (VIN = 3.6V, VOUT = 15V, No Load) 1A in Shutdown Mode` Internal 1A, 36V Switch` Integrated Schottky Diode` Integrated PNP Output Disconnect` Internal Reference Override Pin ` PGOOD Pin` 25V at 80mA from 3.6V Input` Auxiliar...

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SeekIC No. : 004401079 Detail

LT3473A: Features: ` Tiny Solution Size` Low Quiescent Current: 150A in Active Mode (VIN = 3.6V, VOUT = 15V, No Load) 1A in Shutdown Mode` Internal 1A, 36V Switch` Integrated Schottky Diode` Integrated PNP O...

LT3473A Data Sheet

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Part Number:
LT3473A
Supply Ability:
5000

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

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Product Details

Description



Features:

` Tiny Solution Size
` Low Quiescent Current:
   150A in Active Mode (VIN = 3.6V, VOUT = 15V, No Load)
   1A in Shutdown Mode
` Internal 1A, 36V Switch
` Integrated Schottky Diode
` Integrated PNP Output Disconnect
` Internal Reference Override Pin
` PGOOD Pin
` 25V at 80mA from 3.6V Input
` Auxiliary NPNs for Intermediate Bias Voltages (LT3473A)
` Automatic Burst Mode® Operation at Light Load
` Constant Switching Frequency: 1.2MHz
` Thermal Shutdown
` Input Range: 2.2V to 16V
` Low Profile (3mm * 3mm) DFN Package (LT3473)
` Low Profile (4mm * 3mm) DFN Package (LT3473A)


Application

· OLED Bias
·CCD Bias


Pinout

Connection Diagram


Specifications

VIN Voltage........................16V
SHDN Voltage   ......................16V
SW Voltage  ....................... 36V
PGOOD Voltage......................36V
CAP Voltage  .......................36V
OUT Voltage  .......................36V
FB Voltage    ....................... 10V
CTRL Voltage .......................10V
NB1, NB2 Voltage   .................... 36V
NE1, NE2 Voltage..................... 36V
Maximum Junction Temperature ............125°C
Operating Temperature Range (Note 2)   ..40°C to 85°C
Storage Temperature Range ....... 65°C to 125°C


Description

The LT®3473/LT3473A are micropower step-up DC/DC converters with integrated Schottky diode and output disconnect circuitry in low profile DFN packages. The small package size, high level of integration and the use of tiny SMT components yield a solution size of less than 50mm2. The internal 1A switch of the LT3473/LT3473A allows the device to deliver 25V at up to 80mA from a Li-Ion cell, while automatic Burst Mode operation maintains efficiency at light load. An auxiliary reference input (CTRL) allows the user to override the internal 1.25V feedback reference with any lower value, allowing full control of the output voltage during operation. A
PGOOD pin sinks current when the output voltage reaches 90% of final value.

The LT3473A includes two NPN transistors for generating intermediate bias voltages from the output and is offered in a 12-lead (4mm × 3mm) DFN package. The LT3473 does not include these NPNs and is offered in an 8-lead (3mm × 3mm) package.

The rugged 36V switch and output disconnect circuitry allow outputs up to 34V to be easily generated in a simple boost topology.




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