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ADI LT8611EUDD#TRPBF product image
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ADI LT8611EUDD#TRPBFRoHS

Manufacturer
ADI
MPN
LT8611EUDD#TRPBF
LCSC Part #
C674058
Packaging
QFN-24(3x5)
Customer #
Key Attributes
42V, 2.5A Synchronous Step-Down Regulator with Current Sense and 2.5uA Quiescent Current
Datasheetpdf iconADI LT8611EUDD#TRPBF
In-Stock: 63
63 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 11.1399$ 10.9171$ 10.92
10+$ 9.2046$ 9.0206$ 90.21
30+$ 8.324$ 8.1576$ 244.73
100+$ 7.585$ 7.4333$ 743.33
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerADI
PackagingQFN-24(3x5)
Operating Temperature-40℃~+125℃@(TJ)
Frequency - Switching2.2MHz
FunctionStep-down type
Number of Outputs1
FeaturesAdjustable current limiting;Adjustable soft-start;Output voltage tracking;Frequency synchronization;Light load efficient mode;Operating status indication;Overcurrent Protection
Output TypeAdjustable
TopologyBuck
Operating Voltage3.4V~42V
Switch tube (built-in/external)Built-in
Output Voltage970mV~40V
Output Current2.5A
Quiescent Current2.5uA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

The LT8611 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 2.5µA of quiescent current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. The built-in current sense amplifier with monitor and control pins allows accurate input or output current regulation and limiting. Low ripple Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN undervoltage lockout or to shut down the LT8611 reducing the input supply current to 1µA. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up. The PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions. The LT8611 is available in a small 24-lead 3mm × 5mm QFN package with exposed pad for low thermal resistance.

Features

AI Translation
  • Rail-to-Rail Current Sense Amplifier with Monitor
  • Wide Input Voltage Range: 3.4V to 42V
  • Ultralow Quiescent Current Burst Mode Operation
  • 2.5µA IQ Regulating 12VIN to 3.3VOUT
  • Output Ripple < 10mVP-P
  • High Efficiency Synchronous Operation: 96% Efficiency at 1A, 5VOUT from 12VIN; 94% Efficiency at 1A, 3.3VOUT from 12VIN
  • Fast Minimum Switch-On Time: 50ns
  • Low Dropout Under All Conditions: 200mV at 1A
  • Allows Use of Small Inductors
  • Low EMI
  • Adjustable and Synchronizable: 200kHz to 2.2MHz Current Mode Operation
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • Small Thermally Enhanced 3mm × 5mm 24-Lead QFN Package
  • AEC-Q100 Qualified for Automotive Applications

Applications

AI Translation
  • Automotive and Industrial Supplies
  • General Purpose Step-Down CCCV Power Supplies