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ADI LT3509IDE#PBF product image
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ADI LT3509IDE#PBF

Manufacturer
ADI
MPN
LT3509IDE#PBF
LCSC Part #
C670849
Packaging
DFN-14(3x4)
Customer #
Key Attributes
2.15MHz Step-down type Adjustable 700mA DFN-14(3x4) Voltage Regulators - DC DC Switching Regulators RoHS
DatasheetADI LT3509IDE#PBF
RoHS Compliance1 documents available
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement

Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerADI
PackagingDFN-14(3x4)
Operating Temperature-40℃~+125℃@(TJ)
Frequency - Switching2.15MHz
Number of Outputs2
FunctionStep-down type
FeaturesCycle-by-cycle current limiting;Frequency synchronization;Adjustable soft-start;Overcurrent Protection
Output TypeAdjustable
TopologyBuck
Operating Voltage3.6V~36V
Switch tube (built-in/external)Built-in
Output Voltage-
Output Current700mA
Quiescent Current1.9mA
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Introduction

AI Translation

The LT3509 is a dual, current mode, step-down switching regulator, with internal power switches each capable of providing 700mA output current. This regulator provides a compact and robust solution for multi-rail systems in harsh environments. It incorporates several protection features including overvoltage lockout and cycle-by-cycle current limit. Thermal shutdown provides additional protection. The loop compensation components and the boost diodes are integrated on-chip. Switching frequency is set by a single external resistor. External synchronization is also possible. The high maximum switching frequency allows the use of small inductors and ceramic capacitors for low ripple. Constant frequency operation above the AM band avoids interference with radio reception, making the LT3509 well suited for automotive applications. Each regulator has an independent shutdown and soft-start control pin. When both converters are powered down, the common circuitry enters a low current shutdown state.

Features

AI Translation
  • Two 700mA Switching Regulators with Internal Power Switches
  • Wide 3.6V to 36V Operating Range
  • Overvoltage Lockout Protects Circuit Through 60V Supply Transients
  • Short-Circuit Robust
  • Low Dropout Voltage: 95% Maximum Duty Cycle
  • Adjustable 300kHz to 2.2MHz Switching Frequency
  • Synchronizable Over the Full Range
  • Uses Small Inductors and Ceramic Capacitors
  • Integrated Boost Diodes
  • Internal Compensation
  • Thermally Enhanced 14-Lead (4mm×3mm) DFN and 16 Lead MSOP Packages

Applications

AI Translation
  • Automotive Electronics
  • Industrial Controls
  • Wall Transformer Regulation
  • Networking Devices
  • CPU, DSP, or FPGA Power