LT8580 Series

Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization

Catalog

Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization

Part	Function	Frequency - Switching [Max]	Frequency - Switching [Min]	Mounting Type	Voltage - Input (Min) [Min]	Number of Outputs	Voltage - Output (Min/Fixed)	Supplier Device Package	Output Configuration	Output Type	Current - Output	Package / Case	Package / Case [custom]	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Voltage - Output (Max)
Analog Devices LT8580IMS8E#PBF	Step-Up Step-Up/Step-Down	1.5 MHz	200 kHz	Surface Mount	2.55 V	1	1.2 V	8-MSOP-EP	Positive or Negative	Adjustable	1.2 A	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm	-40 °C	125 ¯C	Boost Cuk SEPIC	65 V
Analog Devices LT8580HMS8E#TRPBF	Step-Up Step-Up/Step-Down	1.5 MHz	200 kHz	Surface Mount	2.9 V	1	1.2 V	8-MSOP-EP	Positive or Negative	Adjustable	1.2 A	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm	-40 °C	150 °C	Boost Cuk SEPIC	65 V
Analog Devices LT8580EMS8E#TRPBF	Step-Up Step-Up/Step-Down	1.5 MHz	200 kHz	Surface Mount	2.55 V	1	1.2 V	8-MSOP-EP	Positive or Negative	Adjustable	1.2 A	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm	-40 °C	125 ¯C	Boost Cuk SEPIC	65 V
Analog Devices LT8580HMS8E#PBF	Step-Up Step-Up/Step-Down	1.5 MHz	200 kHz	Surface Mount	2.9 V	1	1.2 V	8-MSOP-EP	Positive or Negative	Adjustable	1.2 A	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm	-40 °C	150 °C	Boost Cuk SEPIC	65 V
Analog Devices LT8580HDD#PBF	Step-Up Step-Up/Step-Down	1.5 MHz	200 kHz	Surface Mount	2.9 V	1	1.2 V	8-DFN (3x3)	Positive or Negative	Adjustable	1.2 A	8-WFDFN Exposed Pad		-40 °C	150 °C	Boost Cuk SEPIC	65 V
Analog Devices LT8580HDD#TRPBF	Step-Up Step-Up/Step-Down	1.5 MHz	200 kHz	Surface Mount	2.9 V	1	1.2 V	8-DFN (3x3)	Positive or Negative	Adjustable	1.2 A	8-WFDFN Exposed Pad		-40 °C	150 °C	Boost Cuk SEPIC	65 V

Catalog

Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization

Key Features

• 1A, 65V Power Switch

• Adjustable Switching Frequency

• Single Feedback Resistor Sets VOUT

• Synchronizable to External Clock

• High GainSHDNPin Accepts Slowly Varying Input Signals

• Wide Input Voltage Range: 2.55V to 40V

• Low VCESATSwitch: 400mV at 0.75A (Typical)

• Integrated Soft-Start Function

• Easily Configurable as a Boost, SEPIC, or Inverting Converter

• User Configurable Undervoltage Lockout (UVLO)

• Pin Compatible with LT3580

• Tiny Thermally Enhanced 8-Lead 3mm × 3mm DFN and 8-Lead MSOP Packages

• AEC-Q100 Qualified for Automotive Applications

Description

The LT8580 is a PWM DC/DC converter containing an internal 1A, 65V switch. The LT8580 can be configured as either a boost, SEPIC or inverting converter.The LT8580 has an adjustable oscillator, set by a resistor from the RT pin to ground. Additionally, the LT8580 can be synchronized to an external clock. The switching frequency of the part may be free running or synchronized, and can be set between 200kHz and 1.5MHz.The LT8580 also features innovativeSHDNpin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function.Additional features such as frequency foldback and soft-start are integrated. The LT8580 is available in tiny thermally enhanced 3mm × 3mm 8-lead DFN and 8-lead MSOP packages.APPLICATIONSVFD Bias SuppliesTFT-LCD Bias SuppliesGPS ReceiversDSL ModemsLocal Power Supply