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LTC1530

Features: ` High Power Buck Converter from 5V or 3.3V Main Power` Adjustable Current Limit in S0-8 with Topside FET RDS(ON) Sensing` No External Sense Resistor Required` Hiccup Mode Current Limit Protection` Adjustable, Fixed 1.9V, 2.5V, 2.8V and 3.3V Output` All N-Channel MOSFET Synchronous Drive...

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SeekIC No. : 004401657 Detail

LTC1530: Features: ` High Power Buck Converter from 5V or 3.3V Main Power` Adjustable Current Limit in S0-8 with Topside FET RDS(ON) Sensing` No External Sense Resistor Required` Hiccup Mode Current Limit Pr...

LTC1530 Data Sheet

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Part Number:
LTC1530
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

` High Power Buck Converter from 5V or 3.3V Main Power
` Adjustable Current Limit in S0-8 with Topside FET RDS(ON) Sensing
` No External Sense Resistor Required
` Hiccup Mode Current Limit Protection
` Adjustable, Fixed 1.9V, 2.5V, 2.8V and 3.3V Output
` All N-Channel MOSFET Synchronous Driver
` Excellent Output Regulation: ±2% over Line, Load and Temperature Variations
` High Efficiency: Over 95% Possible
` Fast Transient Response
` Fixed 300kHz Frequency Operation
` Internal Soft-Start Circuit
` Quiescent Current: 1mA, 45A in Shutdown


Application

· Power Supply for Pentium® II, AMD-K6®-2, SPARC,ALPHA and PA-RISC Microprocessors
· High Power 5V to 1.3V-3.5V Regulators


Pinout

Connection Diagram


Specifications

Supply Voltage
PVCC ...................................................................... 14V
Input Voltage
IFB (Note 2) ............................................... PVCC + 0.3V
IMAX ........................................................ .0.3V to 14V
IFB Input Current (Notes 2,3) .......................... 100mA
Operating Ambient Temperature Range
LTC1530C ................................................ 0°C to 70°C
LTC1530I............................................ .40°C to 85°C
Maximum Junction Temperature
LTC1530C, LTC1530I ......................................... 125°C
Storage Temperature Range ............ 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C


Description

The LTC®1530 is a high power synchronous switching regulator controller optimized for 5V to 1.3V-3.5V output applications. Its synchronous switching architecture drives two external N-channel MOSFET devices to provide high efficiency. The LTC1530 contains a precision trimmed  reference and feedback system that provides worst-case output voltage regulation of ±2% over temperature, load current and line voltage shifts. Current limit circuitry senses the output current through the on-resistance of the topside N-channel MOSFET, providing an adjustable current limit without requiring an external low value sense resistor.

The LTC1530 includes a fixed frequency PWM oscillator that free runs at 300kHz, providing greater than 90% efficiency in converter designs from 1A to 20A of output  current. Shutdown mode drops the LTC1530 supply current to 45A.

The LTC1530 is specified for commercial and industrial temperature ranges and is available in the S0-8 package.




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