LT1619EMS8#TRPBF

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Analog Devices Inc./Maxim Integrated

LOW VOLTAGE CURRENT MODE PWM CONTROLLER

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LT1619EMS8#TRPBF

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Analog Devices Inc./Maxim Integrated

LOW VOLTAGE CURRENT MODE PWM CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT1619 Series

The LT1619 is a fixed frequency PWM controller for implementing current mode DC/DC converters with minimum external parts. The LT1619 operates with input voltages ranging from 1.9V to 18V and is suitable for a variety of battery-powered and distributed DC/DC converters. The internal rail-to-rail N-channel MOSFET driver operates either from the input in the non-bootstrapped mode or from the output in bootstrapped operation. The driver is designed to drive a low side power transistor in boost, SEPIC, flyback and other topologies.Converter efficiency is improved at heavy loads with a 53mV current sense voltage and at light load with Burst Mode operation. The operating frequency is internally setat 300kHz. The oscillator can also be synchronized externally up to 500kHz. No load quiescent current is 140µA and shutdown current is 15µA.The LT1619 is available in 8-lead MSOP and SO packages.Applications3.3V to 5V DC/DC ConvertersDistributed Power SuppliesIsolated Power Supplies

Technical Specifications

Parameters and characteristics for this part

Specification	LT1619EMS8#TRPBF

Clock Sync	Yes
Control Features	Enable
Duty Cycle (Max)	92 %
Frequency - Switching	300 kHz
Function	Step-Up, Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive, Isolation Capable
Output Phases	1
Output Type	Transistor Driver
Package Length	0.118 in
Package Name	8-MSOP, 8-TSSOP, 8-MSOP
Package Width	3 mm
Synchronous Rectifier	No
Topology	Boost, SEPIC, Cuk, Flyback
Voltage - Supply (Vcc/Vdd) Maximum	18 V
Voltage - Supply (Vcc/Vdd) Minimum	1.9 V

LT1619 Series

Part	Output Phases	Mounting Type	Output Configuration	Duty Cycle (Max)	Control Features	Package Name	Synchronous Rectifier	Output Type	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Frequency - Switching	Function	Operating Temperature (Max)	Operating Temperature (Min)	Number of Outputs	Topology	Clock Sync	Package Length	Package Width
Analog Devices Inc./Maxim Integrated LT1619ES8#PBF	1	Surface Mount	Isolation Capable Positive	92 %	Enable	8-SO 8-SOIC	No	Transistor Driver	18 V	1.9 V	300 kHz	Step-Up Step-Up/Step-Down	85 °C	-40 °C	1	Boost Cuk Flyback SEPIC	Yes	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LT1619EMS8#TRPBF	1	Surface Mount	Isolation Capable Positive	92 %	Enable	8-MSOP 8-TSSOP 8-MSOP	No	Transistor Driver	18 V	1.9 V	300 kHz	Step-Up Step-Up/Step-Down	85 °C	-40 °C	1	Boost Cuk Flyback SEPIC	Yes	0.118 in	3 mm
Analog Devices Inc./Maxim Integrated LT1619EMS8#PBF	1	Surface Mount	Isolation Capable Positive	92 %	Enable	8-MSOP 8-TSSOP 8-MSOP	No	Transistor Driver	18 V	1.9 V	300 kHz	Step-Up Step-Up/Step-Down	85 °C	-40 °C	1	Boost Cuk Flyback SEPIC	Yes	0.118 in	3 mm
Analog Devices Inc./Maxim Integrated LT1619ES8#TRPBF	1	Surface Mount	Isolation Capable Positive	92 %	Enable	8-SO 8-SOIC	No	Transistor Driver	18 V	1.9 V	300 kHz	Step-Up Step-Up/Step-Down	85 °C	-40 °C	1	Boost Cuk Flyback SEPIC	Yes	0.154 in	3.9 mm

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R389 Reliability Data

LT1619EMS8#TRPBF | Datasheet