LTC3309BEV#TRMPBF

Active

Analog Devices Inc./Maxim Integrated

CONV DC-DC 2.25V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.5V TO 5.5V 6A 12-PIN LQFN EP T/R

Find alt

Alpha

LTC3309BEV#TRMPBF

Active

Analog Devices Inc./Maxim Integrated

CONV DC-DC 2.25V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.5V TO 5.5V 6A 12-PIN LQFN EP T/R

Find alt

Alpha

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3309B Series

The LTC3309B is a very small, high efficiency, low noise, monolithic synchronous 6A step-down DC/DC converter operating from a 2.25V to 5.5V input supply. Using constant frequency, peak current mode control at switching frequencies 3MHz-10MHz and minimum on-time as low as 22ns, this regulator achieves fast transient response with small external components. Silent Switcher architecture minimizes EMI emissions.The LTC3309B operates in forced continuous or pulse skip mode for low noise, or the low-ripple Burst Mode operation for high efficiency at light loads, ideal for battery-powered systems. The IC regulates output voltages as low as 500mV. Other features include output over-voltage protection, short-circuit protection, thermal shut-down, clock synchronization, and up to 100% duty cycle operation for low dropout. The device is available in a low profile 12-lead 2mm × 2mm × 0.74mm LQFN package with exposed pad for low thermal resistance.APPLICATIONSOptical Networking, Servers, TelecomAutomotive, Industrial, CommunicationsDistributed DC Power Systems (POL)FPGA, ASIC, µP Core Supplies

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3309BEV#TRMPBF

Current - Output	6 A
Frequency - Switching	6 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	12-VFQFN Exposed Pad
Package Length	2 mm
Package Name	12-LQFN
Package Width	2 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.25 V
Voltage - Output (Max)	5.5 V
Voltage - Output (Min/Fixed)	0.5 V

LTC3309B Series

5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm × 2mm LQFN

Part	Package / Case	Mounting Type	Package Length	Package Name	Package Width	Synchronous Rectifier	Number of Outputs	Function	Topology	Output Configuration	Voltage - Output (Max)	Current - Output	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Frequency - Switching	Output Type	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Input (Min)	Current - Output (Max)	Current - Output (Min)
Analog Devices Inc./Maxim Integrated LTC3309BIV#TRPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm
Analog Devices Inc./Maxim Integrated LTC3309BHV#TRPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm
Analog Devices Inc./Maxim Integrated LTC3309BEV#TRMPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm	Yes	2	Step-Down	Buck	Positive	5.5 V	6 A	5.5 V	0.5 V	6 MHz	Adjustable	125 °C	-40 °C	2.25 V
Analog Devices Inc./Maxim Integrated LTC3309BJV#TRPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm
Analog Devices Inc./Maxim Integrated LTC3309BEV#TRPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm
Analog Devices Inc./Maxim Integrated LTC3309BIV#TRMPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm	Yes	2	Step-Down	Buck	Positive	5.5 V	6 A	5.5 V	0.5 V	6 MHz	Adjustable	125 °C	-40 °C	2.25 V
Analog Devices Inc./Maxim Integrated LTC3309BHV#TRMPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm	Yes	2	Step-Down	Buck	Positive	5.5 V	6 A	5.5 V	0.5 V	6 MHz	Adjustable	150 °C	-40 °C	2.25 V
Analog Devices Inc./Maxim Integrated LTC3309BMPV#TRPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm	Yes	2	Step-Down	Buck	Positive	5.5 V		5.5 V	0.5 V	6 MHz	Adjustable	150 °C	-55 °C	2.25 V	2 A	2 A
Analog Devices Inc./Maxim Integrated LTC3309BMPV#TRMPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm	Yes	2	Step-Down	Buck	Positive	5.5 V		5.5 V	0.5 V	6 MHz	Adjustable	150 °C	-55 °C	2.25 V	2 A	2 A
Analog Devices Inc./Maxim Integrated LTC3309BJV#TRMPBF	12-VFQFN Exposed Pad	Surface Mount	2 mm	12-LQFN	2 mm	Yes	2	Step-Down	Buck	Positive	5.5 V	6 A	5.5 V	0.5 V	6 MHz	Adjustable	150 °C	-55 °C	2.25 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Create a free account to access distributor pricing data.

CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3309BEV#TRMPBF | Datasheet

R523 Reliability Data

Package Drawing - 12-Lead LQFN (2mm x 2mm x 0.74mm)