Integrated Circuits (ICs)

LTC3769IUF#PBF

Active

Analog Devices Inc./Maxim Integrated

DC/DC CONTROLLER, SYNCHRONOUS BOOST, 4.5V TO 60V SUPPLY, 1 OUTPUT, 96% DUTY CYCLE, 760KHZ, QFN-EP-24

Integrated Circuits (ICs)

LTC3769IUF#PBF

Active

Analog Devices Inc./Maxim Integrated

DC/DC CONTROLLER, SYNCHRONOUS BOOST, 4.5V TO 60V SUPPLY, 1 OUTPUT, 96% DUTY CYCLE, 760KHZ, QFN-EP-24

Specifications Series Pricing CAD Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3769IUF#PBF

Clock Sync	No
Control Features	Soft Start, Current Limit, Frequency Control, Enable, Power Good
Duty Cycle (Max)	96 %
Frequency - Switching (Max)	760 kHz
Frequency - Switching (Min)	105 kHz
Function	Step-Up, Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	24-WFQFN Exposed Pad
Package Length	4 mm
Package Name	24-QFN
Package Width	4 mm
Synchronous Rectifier	Yes
Topology	SEPIC, Boost
Voltage - Supply (Vcc/Vdd) Maximum	60 V
Voltage - Supply (Vcc/Vdd) Minimum	4.5 V

LTC3769 Series

Part	Output Phases	Function	Mounting Type	Package Width	Package Name	Package Length	Synchronous Rectifier	Number of Outputs	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Duty Cycle (Max)	Topology	Operating Temperature (Max)	Operating Temperature (Min)	Output Configuration	Output Type	Clock Sync	Control Features	Frequency - Switching (Min)	Frequency - Switching (Max)	Package / Case	Package Features
Analog Devices Inc./Maxim Integrated LTC3769IUF#TRPBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4 mm	24-QFN	4 mm	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	125 °C	-40 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz	24-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3769EFE#TRPBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	125 °C	-40 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz		Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3769HUF#TRPBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4 mm	24-QFN	4 mm	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	150 °C	-40 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz	24-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3769IUF#PBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4 mm	24-QFN	4 mm	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	125 °C	-40 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz	24-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3769EFE#PBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	125 °C	-40 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz		Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3769IFE#TRPBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	125 °C	-40 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz		Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3769HFE#PBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4.4 mm	20-TSSOP 20-TSSOP-EP	0.173 in	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	150 °C	-40 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz		Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3769EUF#TRPBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4 mm	24-QFN	4 mm	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	125 °C	-40 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz	24-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3769MPUF#PBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4 mm	24-QFN	4 mm	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	150 °C	-55 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz	24-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3769HUF#PBF	1	Step-Up Step-Up/Step-Down	Surface Mount	4 mm	24-QFN	4 mm	Yes	1	4.5 V	60 V	96 %	Boost SEPIC	150 °C	-40 °C	Positive	Transistor Driver	No	Current Limit Enable Frequency Control Power Good Soft Start	105 kHz	760 kHz	24-WFQFN Exposed Pad

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	Tube	1	$ 10.57	1w
		10	$ 8.26
		91	$ 7.08
		182	$ 6.83
		273	$ 6.71
		546	$ 6.53
		1001	$ 6.40
Newark	Each	1	$ 10.58	1w
		10	$ 8.26
		25	$ 7.86
		50	$ 7.47
		182	$ 7.08

CAD

3D models and CAD resources for this part

Description

General part information

LTC3769 Series

LTC®3769 is a high performance single output synchronous boost converter controller that drives an all N-channel power MOSFET stage. Synchronous rectification increases efficiency, reduces power losses and eases thermal requirements, simplifying high power boost applications. The 28µA no-load quiescent current extends operating run time in battery-powered systems. A 4.5V to 60V input supply range encompasses a wide range of system architectures and battery chemistries. When biased from the output of the boost converter or another auxiliary supply, this can operate from an input supply as low as 2.3V after start-up. The operating frequency can be set within a 50KHz to 900KHz range or synchronized to an external clock using the internal PLL. The SS pin ramps the output voltage during start-up. The PLLIN/MODE pin selects Burst Mode® operation, pulseskipping mode or forced continuous mode at light loads. Typical applications are industrial, medical, military.

Documents

Technical documentation and resources

Datasheet

Product Change Notice EN

R526 Reliability Data

DC2173A - Demo Manual (Rev.B)

LTC3769: 60V Low IQSynchronous Boost Controller Data Sheet (Rev.B)