Power Management Switching Regulator Step-Down (Buck) Regulators Internal Power Switch Buck
Power Management Supercapacitor Chargers

LTC2974 - 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement

LTC3880 - Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management

LTC3606B - 800mA Synchronous Step-Down DC/DC with Average Input Current Limit

Features

  • Programmable Average Input Current Limit: ±5% Accuracy
  • Step-Down Output: Up to 96% Efficiency
  • Low Noise Pulse-Skipping Operation at Light Loads
  • Input Voltage Range: 2.5V to 5.5V
  • Output Voltage Range: 0.6V to 5V
  • 2.25MHz Constant-Frequency Operation
  • Power Good Output Voltage Monitor
  • Low Dropout Operation: 100% Duty Cycle
  • Internal Soft-Start
  • Current Mode Operation for Excellent Line and Load Transient Response
  • ±2% Output Voltage Accuracy
  • Short-Circuit Protected
  • Shutdown Current ≤ 1μA
  • Available in Small Thermally Enhanced 8-Lead 3mm 3mm DFN Package

Typical Application

LTC3606B Typical Application
LTC3606B Typical Application

Description

The LTC3606B is an 800mA monolithic synchronous buck regulator using a constant frequency current mode architecture.

The input supply voltage range is 2.5V to 5.5V, making it ideal for Li-Ion and USB powered applications. 100% duty cycle capability provides low dropout operation, extending the run time in battery-operated systems. Low output voltages are supported with the 0.6V feedback reference voltage. The LTC3606B can supply 800mA output current.

The LTC3606B’s programmable average input current limit is ideal for USB applications and for point-of-load power supplies because the LTC3606B’s limited input current will still allow its output to deliver high peak load currents without collapsing the input supply. The operating frequency is internally set at 2.25MHz allowing the use of small surface mount inductors. Internal soft-start reduces in-rush current during start-up. The LTC3606B is available in an 8-Lead 3mm × 3mm DFN package.

Packaging

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

DFN-8

LTC3606B Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3606BEDD#PBF DFN 8 E $3.00 $2.10 View
LTC3606BEDD#TRPBF DFN 8 E $2.16 View
LTC3606BIDD#PBF DFN 8 I $3.53 $2.47 View
LTC3606BIDD#TRPBF DFN 8 I $2.53 View
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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.

Click here to view our complete list of demo boards

Applications

  • High Peak Load Current Applications
  • USB Powered Devices
  • Supercapacitor Charging
  • Radio Transmitters and Other Handheld Devices

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Related models available in LTspice IV
LTC3606B

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