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ADI LT3686AIDD#TRPBF product image
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ADI LT3686AIDD#TRPBF

Manufacturer
ADI
MPN
LT3686AIDD#TRPBF
LCSC Part #
C671207
Packaging
DFN-10-EP(3x3)
Customer #
Key Attributes
2.5MHz Step-down type Adjustable 800mV~37V 1.2A DFN-10-EP(3x3) Voltage Regulators - DC DC Switching Regulators RoHS
DatasheetADI LT3686AIDD#TRPBF
RoHS Compliance1 documents available
Alternative Parts5
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-10-EP(3x3)
Operating Temperature-40℃~+125℃@(TJ)
Frequency - Switching2.5MHz
FunctionStep-down type
Number of Outputs1
FeaturesCycle-by-cycle current limiting;Frequency synchronization;Output voltage tracking;Adjustable soft-start
Output TypeAdjustable
TopologyBuck
Operating Voltage3.6V~37V
Switch tube (built-in/external)Built-in
Output Voltage800mV~37V
Output Current1.2A
Quiescent Current1.1mA
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Introduction

AI Translation

The LT3686A is a current mode PWM step-down DC/DC converter with an internal power switch. The wide input range of 3.6 to 37V makes the LT3686A suitable for regulating power from a wide variety of sources, including 24V industrial supplies and automotive batteries. Its high maximum frequency allows the use of tiny inductors and capacitors, resulting in a very small solution. Operating frequency above the AM band avoids interfering with radio reception, making the LT3686A particularly suitable for automotive applications.

Cycle-by-cycle current limit, thermal shutdown and DA current sense provide protection against fault conditions. Soft-start and frequency foldback eliminate input current surge during start-up. An optional internal regulated active load at the output via the BD pin keeps the LT3686A at full switching frequency at light loads, resulting in low, predictable output ripple above the audio and AM bands. Internal compensation and an internal boost diode reduce external component count.

The LT3686A offers external synchronization capability, whereas the LT3686 does not.

Features

AI Translation
  • Wide Input Range: Operation from 3.60 to 37V
  • Overvoltage Lockout Protects Circuit Through 60V Transients
  • Low Minimum On-Time: Converts 16VIN to 3.3VOUT at 2MHz
  • 1.2A Output Current
  • Adjustable Frequency: 300kHz to 2.5MHz
  • Constant Switching Frequency at Light Loads
  • Can Be Synchronized to External Clock
  • Tracking and Soft-Start
  • Precision UVLO
  • Short-Circuit Robust
  • IQ in Shutdown <1µA
  • Internally Compensated
  • Thermally Enhanced MSOP and 3mm x 3mm DFN Packages

Applications

AI Translation
  • Automotive Systems
  • Battery-Powered Equipment
  • Wall Transformer Regulation
  • Distributed Supply Regulation