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Buck, Buck-Boost Switching Regulator IC Positive Adjustable 0.6V 3 Output 600mA, 1A 20-TSSOP (0.173", 4.40mm Width) Exposed Pad

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LTC3521EFE#PBF General Description

The LTC3521 combines a 1A buck-boost DC/DC converter and dual 600mA synchronous buck DC/DC converters. The 1.1MHz switching frequency minimizes the solution footprint while maintaining high efficiency. All three converters feature soft-start and internal compensation to minimize the solution footprint and simplify the design process.

Analog Devices, Inc Inventory

Key Features

  • Three High Efficiency DC/DC Converters:
    • Buck-Boost (VOUT: 1.8V to 5.25V, IOUT: 1A)
    • Dual Buck (VOUT: 0.6V to VIN, IOUT: 600mA)
  • 1.8V to 5.5V Input Voltage Range
  • Pin-Selectable Burst Mode® Operation
  • 30μA Total Quiescent Current in Burst Mode Operation
  • Independent Power Good Indicator Outputs
  • Integrated Soft-Start
  • Thermal and Overcurrent Protection
  • <2μA Current in Shutdown
  • Small 4mm × 4mm QFN and Thermally Enhanced TSSOP Packages
Analog Devices, Inc Original Stock


  • Bar Code Readers
  • Medical Instruments
  • Handy Terminals
  • PDAs, Handheld PCs
  • GPS Receivers
Analog Devices, Inc Inventory


model LTC3521EFE#PBF package 20-Lead TSSOP w/ EP
packingQty Tube,74 packingOption Tube
packageType 05-08-1663 (CB) rohs roHSY
lifeCycle production tempRange -40 to 125C
Manufacturer Analog Devices Inc. Product Category Switching Voltage Regulators
RoHS Details Output Voltage 1.8 V to 5.25 V
Output Current 1 A Input Voltage, Max 5.5 V
Number of Outputs 3 Output Topology Boost, Buck
Package / Case TSSOP-20 Mounting Style SMD/SMT
Switching Frequency 1.1 MHz Quiescent Current 30 uA
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 125 C
Series LTC3521 Input Voltage, Min 1.8 V
Brand Analog Devices Development Kit DC1389A
Input Voltage 1.8 V to 5.5 V Operating Supply Current 30 uA
Product Type Switching Voltage Regulators Shutdown Shutdown
Factory Pack Quantity 74 Subcategory PMIC - Power Management ICs
Type DC/DC Converter Unit Weight 0.007055 oz

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LTC3521EFE#PBF Datasheet PDF

Preliminary Specification LTC3521EFE#PBF PDF Download

LTC3521EFE#PBF PDF Preview

Availability: 4650 PCS

Qty. Unit Price(USD) Ext. Price
1+ $5.802 $5.80
200+ $2.245 $449.00
500+ $2.167 $1,083.50
1000+ $2.128 $2,128.00

The prices below are for reference only.