Datasheet Linear Technology LT8331

Manufacturer	Linear Technology
Series	LT8331

Low IQ Boost/SEPIC/ Flyback/Inverting Converter with 0.5A, 140V Switch

Datasheets

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PDF, 1.5 Mb, File uploaded: Sep 19, 2017

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Prices

Packaging

	LT8331EMSE#PBF	LT8331EMSE#TRPBF	LT8331IMSE#PBF	LT8331IMSE#TRPBF
N	1	2	3	4
Package	MS-16E Package Outline Drawing	MS-16E Package Outline Drawing	MS-16E Package Outline Drawing	MS-16E Package Outline Drawing
Package Code	MSE	MSE	MSE	MSE
Package Index	05-08-1871	05-08-1871	05-08-1871	05-08-1871
Pin Count	16	16	16	16

Parametrics

Parameters / Models	LT8331EMSE#PBF	LT8331EMSE#TRPBF	LT8331IMSE#PBF	LT8331IMSE#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC2275A	DC2275A	DC2275A	DC2275A
Design Tools	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model
Export Control	no	no	no	no
Features	Burst Mode, External Synchronization, Resistor Set Frequency	Burst Mode, External Synchronization, Resistor Set Frequency	Burst Mode, External Synchronization, Resistor Set Frequency	Burst Mode, External Synchronization, Resistor Set Frequency
Frequency, kHz	500	500	500	500
Frequency Adjust Range	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz
Frequency Sync Range	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz	100kHz - 500kHz
Integrated Inductor	no	no	no	no
Ishutdown, µA	1	1	1	1
Isupply, mA	0.0055	0.0055	0.0055	0.0055
Max Phases	1	1	1	1
Monolithic	yes	yes	yes	yes
Number of Outputs	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 85	-40 to 85
Polyphase	no	no	no	no
Switch Current, A	0.6	0.6	0.6	0.6
Synchronous	no	no	no	no
Topology	Boost, Sepic, Inverting, Flyback	Boost, Sepic, Inverting, Flyback	Boost, Sepic, Inverting, Flyback	Boost, Sepic, Inverting, Flyback
Topology 1	Boost, Sepic, Inverting, Flyback	Boost, Sepic, Inverting, Flyback	Boost, Sepic, Inverting, Flyback	Boost, Sepic, Inverting, Flyback
Vin Max, V	100	100	100	100
Vin Min, V	4.5	4.5	4.5	4.5
Vin Min Startup, V	4.5	4.5	4.5	4.5
Vout Max, V	140	140	140	140
Vout Maximum	140V	140V	140V	140V
Vout Min, V	1.6	1.6	1.6	1.6
Vref Accuracy Over Temp, %	2	2	2	2
Vswitch Max, V	140	140	140	140

Eco Plan

	LT8331EMSE#PBF	LT8331EMSE#TRPBF	LT8331IMSE#PBF	LT8331IMSE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Design Notes

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Monolithic Converter Delivers High Output Voltages &mdash DN545
PDF, 285 Kb, File published: Nov 4, 2015
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advertisement Monolithic Converter Delivers High Output Voltages
Design Note 545
Jesus Rosales Introduction
Industrial, telecom, medical and automotive applications use a wide variety of regulated voltages to
operate effectively, including high voltage and negative rails. When the designer is faced with producing
industrial power supplies, the job can be simplified by
minimizing the parts count, as well as the number of
required controller ICs. The LTВ®8331 achieves both of
these goals with an integrated 140V, 500mA switch,
programmable frequency, ultra-quiescent current and
light load Burst Mode В® operation. A high voltage negative output rail can easily be
attained by configuring the converter as shown in
FigureВ 2. This converter allows full switch voltage
utilization to produce a negative output, by adding a
capacitor and a diode. A coupling capacitor, C5, adds
input to output disconnect during shutdown, similar
to a CUK converter.
FigureВ 3 shows a CUK converter using the LT8331, and
FigureВ 4 shows the efficiency curve for this inverter
with a 12V input. Efficiency for this converter peaks
at 84%. Burst Mode operation kicks in when the load
drops to about 40mA, which allows the converter to
maintain a respectable efficiency level of 73% even …

Model Line

Series: LT8331 (4)

LT8331EMSE#PBF LT8331EMSE#TRPBF LT8331IMSE#PBF LT8331IMSE#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Inverting Regulators | SEPIC Regulators | Flyback, Forward and Isolated Controllers
Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost