LTC3536 - 1A Low Noise, Buck-Boost DC/DC Converter
Datasheet Documentation
Datasheet
LT Journal
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Overview

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

3x3 DFN-10,MS-12E

LTC3536 Package Drawing
LTC3536 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
(1-99)		 Price
(1k)*
LTC3536EDD#PBF DFN 10 E $3.93 $2.75
LTC3536EDD#TRPBF DFN 10 E $2.81
LTC3536EMSE#PBF MSOP 12 E $4.03 $2.82
LTC3536EMSE#TRPBF MSOP 12 E $2.88
LTC3536IDD#PBF DFN 10 I $4.51 $3.16
LTC3536IDD#TRPBF DFN 10 I $3.22
LTC3536IMSE#PBF MSOP 12 I $4.64 $3.25
LTC3536IMSE#TRPBF MSOP 12 I $3.31
* 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