LTC3610 - 24V, 12A Monolithic Synchronous Step-Down DC/DC Converter

Features

• Click Here for LT3610 Evaluation Kit
• 12A Output Current
• Wide V_IN Range = 4V to 24V
• Internal N-Channel MOSFETs
• True Current Mode Control
• Optimized for High Step-Down Ratios
• t_ON(MIN) =100ns
• Extremely Fast Transient Response
• Stable with Ceramic C_OUT
• ±1% 0.6V Voltage Reference
• Power Good Output Voltage Monitor
• Adjustable On-Time/Switching Frequency
• Adjustable Current Limit
• Programmable Soft-Start
• Output Overvoltage Protection
• Optional Short-Circuit Shutdown Timer
• Low Shutdown IQ: 15µA
• Available in a 9mm × 9mm 64-Pin QFN Package

Typical Application

Description

The LTC3610 is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 12A output current from a 4V to 24V (28V maximum) input supply. It uses a valley current control architecture to deliver very low duty cycle operation at high frequency with excellent transient response. The operating frequency is selected by an external resistor and is compensated for variations in V_IN and V_OUT.

The LTC3610 can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference while discontinuous mode provides high efficiency by reducing switching losses at light loads.

Fault protection is provided by internal foldback current limiting, an output overvoltage comparator and an optional short-circuit shutdown timer. Soft-start capability for supply sequencing is accomplished using an external timing capacitor. The regulator current limit is user programmable. A power good output voltage monitor indicates when the output is in regulation. The LTC3610 is available in a compact 9mm × 9mm QFN package.

Packaging

QFN-64

Order Info

• Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
• 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	Pins	Temp	Price (1-99)	Price (1k)*	RoHS Data
LTC3610EWP#PBF	QFN	64	E	$12.14	$8.50	View
LTC3610EWP#TRPBF	QFN	64	E		$8.56	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.

Evaluation Kits

Part Number	Description	Price
DC1129A	LTC3610EUP - 12A, 24V Monolithic Synchronous Step-Down DC/DC Converter	$125.00
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Applications

• Point of Load Regulation
• Distributed Power Systems

Simulate

To simulate selected Linear Technology products, please download LTSpice / SwitcherCAD III. This powerful schematic capture and simulation tool includes macro models for 80% of Linear Technology's switching regulators, over 200 op amp models, as well as resistors, transistors and MOSFET models.

For other simulation tools, visit our Design Simulation and Device Models page.