LTC3895

RECOMMENDED FOR NEW DESIGNS

150V Low IQ, Synchronous Step-Down DC/DC Controller

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Part Models
6
1ku List Price
Starting From $5.61
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Part Details

  • Wide VIN Range: 4V to 140V (150V Abs Max)
  • Wide Output Voltage Range: 0.8V to 60V
  • Adjustable Gate Drive Level: 5V to 10V (OPTI-DRIVE)
  • Low Operating IQ: 40μA (Shutdown = 10μA)
  • 100% Duty Cycle Operation
  • No External Bootstrap Diode Required
  • Selectable Gate Drive UVLO Thresholds
  • Onboard LDO or External NMOS LDO for DRVCC
  • EXTVCC LDO Powers Drivers from VOUT
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Selectable Continuous, Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Loads
  • Adjustable Burst Clamp and Current Limit
  • Adjustable or Fixed (5V/3.3V) Output Voltage
  • Power Good Output Voltage Monitor
  • Programmable Input Overvoltage Lockout
  • 38-Lead TSSOP High Voltage Package
LTC3895
150V Low IQ, Synchronous Step-Down DC/DC Controller
High Efficiency High Voltage 12V Output Step-Down Regulator Efficiency and Power Loss vs Load Current Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 2

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
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LTC4366
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LTC3895

LTpowerCAD 3

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.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC2117A

LTC3895EFE Demo Board | Synchronous Buck, 14V ≤ VIN ≤ 130V, 150VPK; VOUT = 12V @ 5A

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Product Details

Demonstration circuit 2117A is a single output high voltage nonisolated synchronous step-down converter that drives all N-channel MOSFET power stage. It features the LTC3895EFE, a high voltage step-down DC/DC controller housed in a TSSOP-38 package with several pins removed for high voltage spacing.
DC2117A
LTC3895EFE Demo Board | Synchronous Buck, 14V ≤ VIN ≤ 130V, 150VPK; VOUT = 12V @ 5A
DC2117A Demo Board DC2117A Demo Board DC2117A Demo Board DC2117A Demo Board DC2117A - Schematic

Latest Discussions

42 Weeks Ago
RE: High Power Dissipation during startup (~1 ms)
1 Years Ago
RE: LTC3895 BG pin is burned and shorted to GND
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