LTC3536 - 1A Low Noise, Buck-Boost DC/DC Converter

Features

  • Regulated Output with Input Voltage Above, Below or Equal to the Output Voltage
  • 1.8V to 5.5V Input and Output Voltage Range
  • 1A Continuous Output Current for VIN ≥ 3V, VOUT = 3.3V
  • ±1% Output Voltage Accuracy
  • Low Noise Buck-Boost Architecture
  • Up to 95% Efficiency
  • Programmable Frequency from 300kHz to 2MHz
  • Synchronizable Oscillator
  • Burst Mode® Operation: 32μA IQ
  • Internal 1ms Soft-Start
  • Output Disconnect in Shutdown
  • Shutdown Current: 1μA
  • Short-Circuit Protection
  • Small Thermally Enhanced 12-Pin MSOP and 10-Pin (3mm × 3mm) DFN Packages

Typical Application

LTC3536 Typical Application
LTC3536 Typical Application

Description

The LTC®3536 is an extended VIN range, fixed frequency, synchronous buck-boost DC/DC converter that operates from input voltages above, below or equal to the regulated output voltage. The topology incorporated in the LTC3536 provides low noise operation, making it ideal for RF and precision measurement applications.

The device can produce up to 1A of continuous output current, and it includes two N-channel and two P-channel MOSFET switches. Switching frequencies up to 2MHz can be programmed with an external resistor and the oscillator can be synchronized to an external clock. Quiescent current is only 32μA in Burst Mode operation, maximizing battery life in portable applications. Burst Mode operation is user controlled and improves efficiency at light loads.

Other features include a 1μA shutdown current, internal soft-start, overtemperature protection and current limit. The LTC3536 is available in 12-pin thermally enhanced MSOP and 10-pin (3mm × 3mm) DFN packages.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC3536EDD#PBF 3x3 DFN-10 DD E 05-08-1699 Yes
LTC3536EDD#TRPBF 3x3 DFN-10 DD E 05-08-1699 Yes
LTC3536EMSE#PBF MS-12E MSE E 05-08-1666 Yes
LTC3536EMSE#TRPBF MS-12E MSE E 05-08-1666 Yes
LTC3536IDD#PBF 3x3 DFN-10 DD I 05-08-1699 Yes
LTC3536IDD#TRPBF 3x3 DFN-10 DD I 05-08-1699 Yes
LTC3536IMSE#PBF MS-12E MSE I 05-08-1666 Yes
LTC3536IMSE#TRPBF MS-12E MSE I 05-08-1666 Yes


LTC3536 Package Drawing
LTC3536 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC3536EDD#PBF 3x3 DFN-10 E $3.93 $2.75 Yes
LTC3536EDD#TRPBF 3x3 DFN-10 E $2.81 Yes
LTC3536EMSE#PBF MS-12E E $4.03 $2.82 Yes
LTC3536EMSE#TRPBF MS-12E E $2.88 Yes
LTC3536IDD#PBF 3x3 DFN-10 I $4.51 $3.16 Yes
LTC3536IDD#TRPBF 3x3 DFN-10 I $3.22 Yes
LTC3536IMSE#PBF MS-12E I $4.64 $3.25 Yes
LTC3536IMSE#TRPBF MS-12E I $3.31 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1797A LTC3536EDD (DFN) Demo Board | 1.8V ≤ VIN ≤ 5.5V, Vout = 3.3V @ 1A $150.00
DC1852A LTC3536EMSE (MSOP) Demo Board | 1.8V ≤ VIN ≤ 5.5V, VOUT = 3.3V @ 1A $150.00
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Click here to view our complete list of demo boards

Applications

  • Wireless Inventory Terminals
  • Handheld Medical Instruments
  • Wireless Locators, Microphones
  • Supercapacitor Backup Power Supply

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Design Tools

LTspice

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LTC3536

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