LTC3778

PRODUCTION

Wide Operating Range, No RSENSE Step-Down Controller

Part Models
2
1ku List Price
Starting From $4.09
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Part Details

  • Wide VIN Range: 4V to 36V
  • Sense Resistor Optional
  • True Current Mode Control
  • 2% to 90% Duty Cycle at 200kHz
  • tON(MIN) ≤ 100ns
  • Stable with Ceramic COUT
  • Dual N-Channel MOSFET Synchronous Drive
  • Power Good Output Voltage Monitor
  • ±1% 0.6V Reference
  • Adjustable Current Limit
  • Adjustable Switching Frequency
  • Programmable Soft-Start
  • Output Overvoltage Protection
  • Optional Short-Circuit Shutdown Timer
  • Micropower Shutdown: IQ ≤ 30µA
  • Available in a 1mm 20-Lead TSSOP Package
LTC3778
Wide Operating Range, No RSENSE Step-Down Controller
Figure 1. High Efficiency Step-Down Converter Efficiency vs Load Current Product Package 1
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Documentation

Data Sheet

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

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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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Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • LTC3778
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
DC389A-B

LTC3778EF | High Efficiency Notebook CPU Power Supply, Low Voltage Tualatin, VIN = 7.5V - 24V, VCORE = 1.15V/15Amax + VID

Product Details

DC389A-B: Demo Board for LTC3778 Wide Operating Range, No RSENSE Step-Down Controller.

eval board
DC389A-A

LTC3778EF | High Efficiency Notebook CPU Power Supply, Mobile Tualatin, VIN = 7.5V - 24V, VCORE = 1.4V/23Amax + VID

Product Details

DC389A-A: Demo Board for LTC3778: Wide Operating Range, No RSENSE Step-Down Controller.

eval board
DC389A-C

LTC3778EF | High Efficiency Notebook CPU Power Supply, Ultra Low Voltage Tualatin, VIN = 7.5V - 24V, VCORE = 1.1V/13Amax + VID

Product Details

DC389A-C: Demo Board for LTC3778 Wide Operating Range, No RSENSE Step-Down Controller.

DC389A-B
LTC3778EF | High Efficiency Notebook CPU Power Supply, Low Voltage Tualatin, VIN = 7.5V - 24V, VCORE = 1.15V/15Amax + VID
DC389A-A - Schematic
DC389A-A
LTC3778EF | High Efficiency Notebook CPU Power Supply, Mobile Tualatin, VIN = 7.5V - 24V, VCORE = 1.4V/23Amax + VID
DC389A-A - Schematic
DC389A-C
LTC3778EF | High Efficiency Notebook CPU Power Supply, Ultra Low Voltage Tualatin, VIN = 7.5V - 24V, VCORE = 1.1V/13Amax + VID
DC389A-A - Schematic

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