Datasheet Linear Technology LT8570

Manufacturer	Linear Technology
Series	LT8570

Boost/SEPIC/Inverting DC/DC Converter with 65V Switch, Soft-Start and Synchronization

Datasheets

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PDF, 906 Kb, Language: en, File uploaded: Sep 19, 2017, Pages: 34
Boost/SEPIC/Inverting DC/DC Converter with 65V Switch, Soft-Start and Synchronization

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Packaging

	LT8570EDD#PBF	LT8570EDD#TRPBF	LT8570EMS8E#PBF	LT8570EMS8E#TRPBF	LT8570IDD#PBF	LT8570IDD#TRPBF	LT8570IMS8E#PBF	LT8570IMS8E#TRPBF
N	1	2	3	4	5	6	7	8
Package	3x3 DFN-8 Package Outline Drawing	3x3 DFN-8 Package Outline Drawing	MS-8E Package Outline Drawing	MS-8E Package Outline Drawing	3x3 DFN-8 Package Outline Drawing	3x3 DFN-8 Package Outline Drawing	MS-8E Package Outline Drawing	MS-8E Package Outline Drawing
Package Code	DD	DD	MS8E	MS8E	DD	DD	MS8E	MS8E
Package Index	05-08-1698	05-08-1698	05-08-1662	05-08-1662	05-08-1698	05-08-1698	05-08-1662	05-08-1662
Pin Count	8	8	8	8	8	8	8	8

Parametrics

Parameters / Models	LT8570EDD#PBF	LT8570EDD#TRPBF	LT8570EMS8E#PBF	LT8570EMS8E#TRPBF	LT8570IDD#PBF	LT8570IDD#TRPBF	LT8570IMS8E#PBF	LT8570IMS8E#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC2297A-A,DC2297A-B	DC2297A-A,DC2297A-B	DC2297A-A,DC2297A-B	DC2297A-A,DC2297A-B	DC2297A-A,DC2297A-B	DC2297A-A,DC2297A-B	DC2297A-A,DC2297A-B	DC2297A-A,DC2297A-B
Design Tools	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File
Export Control	no	no	no	no	no	no	no	no
Features	Resistor Set Frequency, External Synchronization, Soft Start	Resistor Set Frequency, External Synchronization, Soft Start	Resistor Set Frequency, External Synchronization, Soft Start	Resistor Set Frequency, External Synchronization, Soft Start	Resistor Set Frequency, External Synchronization, Soft Start	Resistor Set Frequency, External Synchronization, Soft Start	Resistor Set Frequency, External Synchronization, Soft Start	Resistor Set Frequency, External Synchronization, Soft Start
Frequency, kHz	1500	1500	1500	1500	1500	1500	1500	1500
Frequency Adjust Range	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz
Frequency Sync Range	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz	200kHz - 1.5MHz
Integrated Inductor	no	no	no	no	no	no	no	no
Ishutdown, µA	1	1	1	1	1	1	1	1
Isupply, mA	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2
Max Phases	1	1	1	1	1	1	1	1
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Switch Current, A	0.75	0.75	0.75	0.75	0.75	0.75	0.75	0.75
Synchronous	no	no	no	no	no	no	no	no
Topology	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting
Topology 1	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting	Boost, Sepic, Inverting
Vin Max, V	40	40	40	40	40	40	40	40
Vin Min, V	2.55	2.55	2.55	2.55	2.55	2.55	2.55	2.55
Vin Min Startup, V	2.55	2.55	2.55	2.55	2.55	2.55	2.55	2.55
Vout Max, V	65	65	65	65	65	65	65	65
Vout Maximum	65V	65V	65V	65V	65V	65V	65V	65V
Vout Min, V	1.204	1.204	1.204	1.204	1.204	1.204	1.204	1.204
Vref Accuracy Over Temp, %	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3
Vswitch Max, V	65	65	65	65	65	65	65	65

Eco Plan

	LT8570EDD#PBF	LT8570EDD#TRPBF	LT8570EMS8E#PBF	LT8570EMS8E#TRPBF	LT8570IDD#PBF	LT8570IDD#TRPBF	LT8570IMS8E#PBF	LT8570IMS8E#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Other Options

LT8570-1

Articles

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3mm × 3mm Monolithic DC/DC Boost/Inverting Converters with 65V Power Switches &mdash LT Journal
PDF, 230 Kb, File published: Jul 7, 2015
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3mm Г— 3mm Monolithic DC/DC Boost/Inverting Converters
with 65V Power Switches
Joshua Moore The vast array of power supply rails required by modern electronics has popularized the
use of compact, easy-to-use monolithic DC/DC converters, such as the LT3580 boost/
inverting converter. The LT8580, LT8570, and LT8570-1 build on the success of the LT3580,
increasing the switch voltage to 65V and the input voltage to 40V, while retaining features
and pin compatibility. The LT8580 includes a 65V, 1A power switch, whereas the LT8570 and
LT8570-1 step the switch current limit down to 0.5A and 0.25A, respectively. Various current
options enable application optimizationвЂ”a monolithic converter sized for specific demands
can be smaller and more efficient than one designed for greater load currents. Optimized
sizing for current limit helps limit input and output current in the event of a short or failure.
In addition to the new options, all
devices in the familyвЂ”LTВ®3580, LT8580,
LT8570, and LT8570-1вЂ”are pin compatible. With a few simple component
changes, the same PCB layout can be
used for a range of applications, allowing fast turnaround design changes and
reuse. The LT8580, LT8570, and LT8570-1
retain the LT3580вЂ™s features such as single
resistor feedback, for both positive and
negative output voltages, overtemperature protection, frequency foldback, and an
external clock input pin. And, like the
LT3580, many features are user adjustable, including oscillator frequency,
soft-start, UVLO and output voltage. All …

Model Line

Series: LT8570 (8)

LT8570EDD#PBF LT8570EDD#TRPBF LT8570EMS8E#PBF LT8570EMS8E#TRPBF LT8570IDD#PBF LT8570IDD#TRPBF LT8570IMS8E#PBF LT8570IMS8E#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Inverting Regulators | SEPIC Regulators
Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost