LT3598EUF#TRPBF

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Analog Devices Inc./Maxim Integrated

6-STRING 30MA LED DRIVER WITH ±1.5% CURRENT MATCHING

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LT3598EUF#TRPBF

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Analog Devices Inc./Maxim Integrated

6-STRING 30MA LED DRIVER WITH ±1.5% CURRENT MATCHING

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT3598 Series

The LT3598 is a fixed frequency step-up DC/DC converter designed to drive up to six strings of LEDs at an output voltage up to 44V. LED dimming can be achieved with analog dimming on the CTRL pin, and with pulse width modulation dimming on the PWM pin. The LT3598 accurately regulates LED current even when the input voltage is higher than the LED output voltage. The switching frequency is programmable from 200kHz to 2.5MHz through an external resistor.Additional features include programmable overvoltage protection, switching frequency synchronization to an external clock, LED current derating based on junction temperature and/or LED temperature, LED string disable control,OPENLEDalert pin and output voltage limiting when all LED strings are disconnected. The LT3598 is available in a thermally enhanced 24-lead (4mm × 4mm) QFN and 24-lead TSSOP packages.ApplicationsNotebook Computer DisplayMedium Size DisplaysAutomotive LCD Display

Technical Specifications

Parameters and characteristics for this part

Specification	LT3598EUF#TRPBF

Current - Output / Channel	30 mA
Dimming	PWM, Analog
Frequency (Max)	2.5 MHz
Frequency (Min)	200 kHz
Internal Switch(s)	Yes
Mounting Type	Surface Mount
Number of Outputs	6
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Package / Case	24-WFQFN Exposed Pad
Package Length	4 mm
Package Name	24-QFN
Package Width	4 mm
Topology	Step-Up (Boost)
Type	DC DC Regulator
Voltage - Output	44 V
Voltage - Supply (Max)	30 V
Voltage - Supply (Min)	3 V

LT3598 Series

Part	Frequency (Min)	Frequency (Max)	Current - Output / Channel	Voltage - Supply (Min)	Package Width	Package Name	Package Length	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type	Dimming	Voltage - Output	Topology	Type	Internal Switch(s)	Number of Outputs	Voltage - Supply (Max)	Package / Case	Package Features
Analog Devices Inc./Maxim Integrated LT3598IUF#PBF	200 kHz	2.5 MHz	30 mA	3 V	4 mm	24-QFN	4 mm	125 °C	-40 °C	Surface Mount	Analog PWM	44 V	Step-Up (Boost)	DC DC Regulator	Yes	6	30 V	24-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LT3598EUF#TRPBF	200 kHz	2.5 MHz	30 mA	3 V	4 mm	24-QFN	4 mm	125 °C	-40 °C	Surface Mount	Analog PWM	44 V	Step-Up (Boost)	DC DC Regulator	Yes	6	30 V	24-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LT3598IFE#TRPBF	200 kHz	2.5 MHz	30 mA	3 V	4.4 mm	24-TSSOP	0.173 in	125 °C	-40 °C	Surface Mount	Analog PWM	44 V	Step-Up (Boost)	DC DC Regulator	Yes	6	30 V		Exposed Pad
Analog Devices Inc./Maxim Integrated LT3598EFE#PBF	200 kHz	2.5 MHz	30 mA	3 V	4.4 mm	24-TSSOP	0.173 in	125 °C	-40 °C	Surface Mount	Analog PWM	44 V	Step-Up (Boost)	DC DC Regulator	Yes	6	30 V		Exposed Pad
Analog Devices Inc./Maxim Integrated LT3598IFE#PBF	200 kHz	2.5 MHz	30 mA	3 V	4.4 mm	24-TSSOP	0.173 in	125 °C	-40 °C	Surface Mount	Analog PWM	44 V	Step-Up (Boost)	DC DC Regulator	Yes	6	30 V		Exposed Pad
Analog Devices Inc./Maxim Integrated LT3598IUF#TRPBF	200 kHz	2.5 MHz	30 mA	3 V	4 mm	24-QFN	4 mm	125 °C	-40 °C	Surface Mount	Analog PWM	44 V	Step-Up (Boost)	DC DC Regulator	Yes	6	30 V	24-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LT3598EFE#TRPBF	200 kHz	2.5 MHz	30 mA	3 V	4.4 mm	24-TSSOP	0.173 in	125 °C	-40 °C	Surface Mount	Analog PWM	44 V	Step-Up (Boost)	DC DC Regulator	Yes	6	30 V		Exposed Pad
Analog Devices Inc./Maxim Integrated LT3598EUF#PBF	200 kHz	2.5 MHz	30 mA	3 V	4 mm	24-QFN	4 mm	125 °C	-40 °C	Surface Mount	Analog PWM	44 V	Step-Up (Boost)	DC DC Regulator	Yes	6	30 V	24-WFQFN Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Datasheet

R518 Reliability Data