LTC1909-8

PRODUCTION

Wide Operating Range, No RSENSETM Step-Down DC/DC Controller with SMBus Programming

Data Sheet Product Selection Table
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Part Details

  • SMBus/I²C™ Programmable Output Voltage: 1.3V to 3.5V
  • No Sense Resistor Required
  • 2% to 90% Duty Cycle at 200kHz
  • tON(MIN) </= 100ns
  • True Current Mode Control
  • Stable with Ceramic COUT
  • Power Good Output Voltage Monitor and 50µs Timer
  • Wide VIN Range: 4V to 36V (Abs Max)
  • Precision Resistor Divider and Reference Provide ±1.35% Output Voltage Accuracy Over Temperature
  • Adjustable Switching Frequency and Current Limit
  • Forced Continuous Control Pin
  • Programmable Soft-Start
  • Output Overvoltage Protection
  • Optional Short-Circuit Shutdown Timer
  • Available in a 28-Lead SSOP Package
LTC1909-8
Wide Operating Range, No RSENSETM Step-Down DC/DC Controller with SMBus Programming
Figure 1. High Efficiency Step-Down Converter Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2974
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Dual-Supply Monitors 1
LTC2960
RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Multiple Output Buck Regulators 1
LTC3880
RECOMMENDED FOR NEW DESIGNS Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Evaluation Kits

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schematic 1
DC475A

LTC1909-8EG | SMBus Controlled DC/DC Converter, VIN = 7.5V-21V, VOUT = 1.3V-3.5V@10A

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Product Details

DC475A: Demo Board for the LTC1909-8 - Wide Operating Range, No RSENSE Step-Down DC/DC Controller with SMBus Programming.


 
DC475A
LTC1909-8EG | SMBus Controlled DC/DC Converter, VIN = 7.5V-21V, VOUT = 1.3V-3.5V@10A
DC475A - Schematic

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