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ADI LTC7149IFE#PBF product image
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ADI LTC7149IFE#PBFRoHS

Manufacturer
ADI
MPN
LTC7149IFE#PBF
LCSC Part #
C690149
Packaging
HTSSOP-28-EP
Customer #
Key Attributes
60V, 4A Synchronous Step-Down Regulator for Inverting Outputs
Datasheetpdf iconADI LTC7149IFE#PBF
In-Stock: 10
10 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 31.398$ 31.40
30+$ 29.9377$ 898.13
Standard Packaging50/Full Tube
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerADI
PackagingHTSSOP-28-EP
Operating Temperature-40℃~+125℃
Frequency - Switching1MHz
FunctionStep-down type
Number of Outputs1
FeaturesAdjustable soft-start;Frequency synchronization;Light load efficient mode;Built-in LDO regulator;Operating status indication;Cycle-by-cycle current limiting
Output TypeAdjustable
TopologyBuck
Operating Voltage3.4V~60V
Switch tube (built-in/external)Built-in
Output Current4A
Output Voltage-28V~0V
Quiescent Current440uA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging50
Sales UnitPiece

Introduction

AI Translation

The LTC7149 is a high efficiency 60V, 4A synchronous monolithic step-down regulator for inverting output applications. The regulator features a single resistor-programmable output voltage and high efficiency over a wide VOUT range. The inverting regulator operates from an input voltage range of 3.4V to 60V and provides an adjustable output from (-28V) to zero volts while delivering up to 4A of inductor current. The switching frequency is also set with an external resistor. A user-selectable mode input is provided to allow the user to trade off ripple noise for efficiency at light loads; Burst Mode operation provides the highest efficiency at light loads, while forced continuous mode provides low output ripple. The MODE/SYNC pin can also be used to synchronize the switching frequency to an external clock. Internal level-shift circuits allow the I/O pins (RUN, MODE/SYNC, PGOOD) to be referenced to board GND. The LTC7149 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection.

Features

AI Translation
  • Wide VIN Range: 3.4V to 60V
  • Wide VOUT Range: 0V to –28V
  • Single Resistor VOUT Programming
  • Integrated 110mΩ Top N-Channel/50mΩ Bottom N-Channel MOSFETs
  • Regulated IQ: 440µA, Shutdown IQ: 15µA
  • Board GND Referenced I/O Pins (RUN, PGOOD, MODE/SYNC)
  • Accurate Resistor Programmable Frequency (300kHz to 3MHz) with ±50% Frequency Sync Range
  • 92% Efficiency with 12VIN and –5VOUT
  • ±0.8% Output Voltage Accuracy
  • Peak Current Mode Operation
  • Burst Mode Operation, Forced Continuous Mode
  • Programmable Soft-Start
  • Overtemperature Protection
  • Available in 28-Lead (4mm x 5mm) QFN and TSSOP Packages

Applications

AI Translation
  • Industrial Applications
  • Telecom Power Supplies
  • Distributed Power Systems