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ADI LTC3895HFE#TRPBF product image
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ADI LTC3895HFE#TRPBFRoHS

Manufacturer
ADI
MPN
LTC3895HFE#TRPBF
LCSC Part #
C687036
Packaging
TSSOP-38-EP-4.4mm
Customer #
Key Attributes
150V Low lQ, Synchronous Step-Down DC/DC Controller
Datasheetpdf iconADI LTC3895HFE#TRPBF
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10+$ 12.2924$ 122.92
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerADI
PackagingTSSOP-38-EP-4.4mm
Synchronous RectifierYes
FeaturesAdjustable current limiting;Frequency synchronization;Light load efficient mode;Built-in LDO regulator;Operating status indication
Number of Channels1
TopologyBuck
Operating Voltage4V~140V
Switch tube (built-in/external)External
Output Voltage800mV~60V
Operating Temperature-40℃~+150℃@(TJ)
Output Current-
Frequency - Switching900kHz
Output TypeAdjustable
FunctionStep-down type
Quiescent Current40uA
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Introduction

AI Translation

The LTC3895 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage that can operate from input voltages up to 140V. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. The gate drive voltage can be programmed from 5V to 10V to allow the use of logic or standard-level FETs to maximize efficiency. An integrated switch in the top gate driver eliminates the need for an external bootstrap diode. An internal charge pump allows for 100% duty cycle operation. The low 40μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3895 features a precision 0.8V reference and power good output indicator. The output voltage can be programmed between 0.8V to 60V using external resistors or pin-programmed for a fixed 5V or 3.3V.

Features

AI Translation
  • 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 DRVC
  • 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

Applications

AI Translation
  • Automotive and Industrial Power Systems
  • High Voltage Battery Operated Systems
  • Telecommunications Power Systems