Power Management Switching Regulator Step-Down (Buck) Regulators Micropower Buck
Power Management Switching Regulator Step-Down (Buck) Regulators Internal Power Switch Buck
 Power Management Switching Regulator DDR Memory/Bus Termination

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

LTC3616 - 6A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter

Features

  • 6A Output Current
  • 2.25V to 5.5V Input Voltage Range
  • Low Output Ripple Burst Mode® Operation: IQ = 75μA
  • ±1% Output Voltage Accuracy
  • Output Voltage Down to 0.6V
  • High Efficiency: Up to 95%
  • Low Dropout Operation: 100% Duty Cycle
  • Programmable Slew Rate on SW Node Reduces
  • Noise and EMI
  • Adjustable Switching Frequency: Up to 4MHz
  • Optional Active Voltage Positioning (AVP) with
  • Internal Compensation
  • Selectable Pulse-Skipping/Forced Continuous/Burst
  • Mode Operation with Adjustable Burst Clamp
  • Programmable Soft-Start
  • Inputs for Start-Up Tracking or External Reference
  • DDR Memory Mode, IOUT = ±3A
  • Available in a 24-Pin 3mm × 5mm QFN
  • Thermally Enhanced Package

Typical Application

LTC3616 Typical Application
LTC3616 Typical Application

Description

The LTC3616 is a low quiescent current monolithic synchronous buck regulator using a current mode, constant frequency architecture. The no-load DC supply current in sleep mode is only 70μA while maintaining the output voltage (Burst Mode operation) at no load, dropping to zero current in shutdown. The 2.25V to 5.5V input supply voltage range makes the LTC3616 ideally suited for single Li-Ion as well as fixed low voltage input applications. 100% duty cycle capability provides low dropout operation, extending the operating time in battery-powered systems.

The operating frequency is externally programmable up to 4MHz, allowing the use of small surface mount inductors. For switching noise-sensitive applications, the LTC3616 can be synchronized to an external clock at up to 4MHz.

Forced continuous mode operation in the LTC3616 reduces noise and RF interference. Adjustable compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

The internal synchronous switch increases efficiency and eliminates the need for an external catch diode, saving external components and board space. The LTC3616 is offered in a leadless 24-pin 3mm × 5mm thermally enhanced QFN package.

Packaging

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

QFN-24

LTC3616 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3616EUDD#PBF QFN 24 E $5.43 $3.80 View
LTC3616EUDD#TRPBF QFN 24 E $3.86 View
LTC3616IUDD#PBF QFN 24 I $6.39 $4.47 View
LTC3616IUDD#TRPBF QFN 24 I $4.53 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.

Part Number Description Price Documentation
DC1461A LTC3616EUDD Demo Board | 6A, 4MHz, Monolithic Synchronous Step-Down DC/DC Converter $100.00
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Click here to view our complete list of demo boards

Applications

  • Point-of-Load Supplies
  • Distributed Power Supplies
  • Portable Computer Systems
  • DDR Memory Termination
  • Handheld Devices

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Related models available in LTspice IV
LTC3616

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