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LT8365HMSE#TRPBF

IC REG BST SEPIC TRAN DRV 16MSOP

Part Number: LT8365HMSE#TRPBF

Manufacturer: Analog Devices Inc.

Category: Voltage Regulators - DC DC Switching Regulators

Package: 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad

Datasheet:: LT8365HMSE#TRPBF.pdf

Description: IC REG BST SEPIC TRAN DRV 16MSOP

Select Quantity Stock: 12,259

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

LT8365HMSE#TRPBF Low IQ Boost/SEPIC/Inverting Converter with 1.5A, 150V Switch

A comprehensive technical overview of the LT8365HMSE#TRPBF, a current mode DC/DC converter from Analog Devices featuring an integrated 1.5A, 150V switch, a wide 2.8V to 60V input voltage range, an ultralow 9µA quiescent current in Burst Mode® operation, a unique single feedback pin architecture for positive or negative output programming, programmable frequency from 100kHz to 500kHz, spread spectrum frequency modulation (SSFM) for low EMI, and a thermally enhanced 16-lead MSOP package. The H-grade version is specified for operation from –40°C to +150°C junction temperature. Covers device function, core features, electrical specifications, pin configuration, typical applications, and replacement selection guidance.

Analog Devices 16(12)-Lead MSOP-EP (3mm × 3mm) 2.8V to 60V

Device Classification Boost/SEPIC/Inverting DC/DC Converter

Part Number: LT8365HMSE#TRPBF

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +150°C (T_J)

PRODUCT OVERVIEW

What Is the LT8365HMSE#TRPBF?

LT8365HMSE#TRPBF is a current mode DC/DC converter from Analog Devices with an integrated 1.5A, 150V power switch, designed to operate from an input voltage range of 2.8V to 60V. The device features a unique single feedback pin (FBX) architecture that enables easy configuration as a boost, SEPIC, or inverting converter with either positive or negative output voltage programming.

In Burst Mode® operation, the LT8365 consumes as little as 9µA of quiescent current at very low output currents while maintaining high efficiency, with typical output ripple below 15mV. The switching frequency is programmable from 100kHz to 500kHz via a single resistor on the RT pin, and the SYNC/MODE pin allows synchronization to an external clock as well as selection between pulse-skipping and Burst Mode operation, with or without spread spectrum frequency modulation (SSFM) for low EMI.

Additional features include a BIAS pin that accepts a second input supply to power the INTV_CC regulator for improved efficiency, frequency foldback, and programmable soft-start to control inductor current during start-up. The device is AEC-Q100 qualified for automotive applications.

The LT8365HMSE#TRPBF is the H-grade version in a thermally enhanced 16-lead MSOP package with four pins removed (12 active leads plus an exposed pad) to provide high-voltage pin spacing. It is specified for operation from –40°C to +150°C junction temperature. The device is RoHS compliant, REACH unaffected, and in active production.

Wide 2.8V to 60V Input Range Integrated 1.5A, 150V switch supports boost, SEPIC, and inverting topologies with a unique single feedback pin for positive or negative output programming.

Ultralow Quiescent Current (9µA) Burst Mode® operation draws only 9µA at no load while maintaining output ripple below 15mV, ideal for always-on and battery-powered systems.

Low EMI & Programmable Frequency Programmable 100kHz to 500kHz frequency with SSFM for low EMI, external synchronization, and a BIAS pin for improved efficiency. AEC-Q100 qualified.

DEVICE HIGHLIGHTS

Key Features and Benefits of LT8365HMSE#TRPBF

Wide 2.8V to 60V Input Range

Operates from 2.8V to 60V input, supporting a broad spectrum of applications including automotive, industrial, telecom, and portable electronics.

Integrated 1.5A, 150V Switch

The integrated high-voltage power switch simplifies the design of boost, SEPIC, and inverting converters, eliminating the need for external switching components.

Ultralow Quiescent Current (9µA)

Burst Mode® operation draws only 9µA of quiescent current at very low output currents while keeping output ripple below 15mV, extending battery life in always-on systems.

Single Feedback Pin (FBX) Architecture

The unique FBX pin enables easy programming of either positive or negative output voltages, simplifying the configuration of boost, SEPIC, and inverting topologies.

Programmable Frequency & SSFM

Switching frequency is programmable from 100kHz to 500kHz, with spread spectrum frequency modulation (SSFM) available for low EMI, and synchronization to an external clock via the SYNC/MODE pin.

AEC-Q100 Qualified & H-Grade

AEC-Q100 qualified for automotive applications with the H-grade specified for –40°C to +150°C junction temperature, housed in a thermally enhanced 16-lead MSOP package with high-voltage pin spacing.

REFERENCE DATA

Technical Specifications for LT8365HMSE#TRPBF

Part Number	LT8365HMSE#TRPBF	Manufacturer	Analog Devices
Device Type	Boost/SEPIC/Inverting DC/DC Converter	Topology	Boost, SEPIC, Inverting
Input Voltage Range (V_IN)	2.8V to 60V	Maximum Switch Voltage	150V
Switch Current (Max)	1.5A	Output Voltage Configuration	Positive or Negative (via FBX)
Quiescent Current (I_Q)	9µA (Burst Mode®)	Output Ripple (Burst Mode®)	< 15mV (Typical)
Switching Frequency Range	100kHz to 500kHz	External Synchronization	Yes (via SYNC/MODE)
Spread Spectrum	SSFM (for Low EMI)	Feedback Voltage (FBX)	1.60V (Internal Bias)
BIAS Pin	Second Input for INTV_CC (Improves Efficiency)	Soft-Start	Programmable (External Capacitor)
EN/UVLO Pin	Shutdown and Programmable UVLO	INTV_CC Regulator	3.8V Internal Supply
Package / Case	16(12)-Lead MSOP with Exposed Pad	Supplier Device Package	MSOP-EP (MSE16-12)
Pin Count	12 Active Leads + Exposed Pad	Mounting Type	Surface Mount
Operating Junction Temperature (H-Grade)	-40°C to +150°C	AEC-Q100 Qualification	Yes
RoHS	ROHS3 Compliant	REACH Status	REACH Unaffected
MSL Level	MSL 1 (Unlimited)	Product Status	Active
Packaging	Tape & Reel (2,500 per Reel)	Grade	H-Grade

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for LT8365HMSE#TRPBF

Topology, Frequency & Mode Configuration

The LT8365HMSE#TRPBF offers flexible configuration for topology, frequency, and operating mode:

Topology Selection (FBX Pin): The single FBX feedback pin supports positive or negative output programming, enabling boost, SEPIC, or inverting configurations with minimal external components.
Switching Frequency (RT Pin): A resistor from RT to the exposed pad GND (near FBX) programs the switching frequency from 100kHz to 500kHz.
Mode & Synchronization (SYNC/MODE Pin): Selects between Burst Mode, pulse-skipping, or SSFM operation. Tie to GND for Burst Mode, apply an external clock for synchronization, use a 100kΩ resistor for Burst/SSFM, float for pulse-skipping, or tie to INTV_CC/>1.7V for pulse-skipping/SSFM.
Soft-Start (SS Pin): A capacitor from SS to GND (near FBX) controls the ramp rate of inductor current during start-up (charging current is 2µA).
Enable/UVLO (EN/UVLO Pin): A resistor divider from V_IN programs the undervoltage lockout threshold. Below the accurate 1.6V threshold, the part enters UVLO; below 0.2V, V_IN current drops below 1µA.

PCB and System-Level Guidance

High-voltage converter performance depends on layout and component selection:

Input Capacitor: Locally bypass the V_IN pin with a low-ESR ceramic capacitor placed as close as possible to the pin and the exposed pad PGND copper.
INTV_CC Capacitor: Bypass the INTV_CC pin with a 1µF low-ESR ceramic capacitor to GND. No additional components or loading are allowed on this pin.
BIAS Pin: Connect a second input supply (4.4V ≤ BIAS ≤ 60V) to improve efficiency by powering the INTV_CC regulator from BIAS instead of V_IN.
Exposed Pad: The exposed pad is the power ground (PGND) and signal ground (GND). It must be soldered to the PCB ground plane for thermal and electrical performance.
High-Voltage Spacing: The package removes four pins to provide high-voltage pin spacing. Maintain appropriate creepage and clearance distances on the PCB for the 150V switch node.
Verify the recommended PCB footprint from the official datasheet prior to production.

16(12)-LEAD MSOP-EP (3mm × 3mm)

Pin Configuration Reference for LT8365HMSE#TRPBF

LT8365

MSOP TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The MSE16 package has 16 lead positions with four pins removed (12 active leads) plus an exposed pad (Pin 17) to provide high-voltage pin spacing. The exposed pad must be soldered to the PCB ground plane for thermal and electrical performance.

1 V_IN Input Supply - Must Be Locally Bypassed with Low-ESR Ceramic Capacitor

2 EN/UVLO Shutdown and Undervoltage Detect - Below 1.6V Enters UVLO; Below 0.2V Reduces V_IN Current Below 1µA

3 SS Soft-Start - Capacitor to GND (Near FBX) Controls Inductor Current Ramp Rate; 2µA Charging Current

4 RT Oscillator Frequency Program - Resistor to Exposed Pad GND (Near FBX) Sets 100kHz to 500kHz

5 SYNC/MODE Mode Selection and Synchronization - Selects Burst, Pulse-Skipping, or SSFM; Accepts External Clock

6 BIAS Second Input Supply for INTV_CC - Connect to 4.4V–60V Rail for Improved Efficiency

7 INTV_CC Regulated 3.8V Internal Supply - Bypass with 1µF Low-ESR Ceramic Capacitor to GND

8 FBX Voltage Regulation Feedback - Single Pin for Positive or Negative Output Programming

9 NC No Connect - Pin Removed for High-Voltage Spacing

10 NC No Connect - Pin Removed for High-Voltage Spacing

11 SW2 Switch Node - Internal Power Switch Connection (Paired with SW1)

12 SW1 Switch Node - Internal Power Switch Connection (Paired with SW2)

13 NC No Connect - Pin Removed for High-Voltage Spacing

14 NC No Connect - Pin Removed for High-Voltage Spacing

15 GND Signal Ground

16 PGND Power Ground

17 EP Exposed Pad - Power Ground and Signal Ground; Must Be Soldered to PCB Ground Plane

APPLICATION AREAS

Typical Applications for LT8365HMSE#TRPBF

Automotive Systems

AEC-Q100 qualified and specified for –40°C to +150°C, suitable for automotive boost, SEPIC, and inverting power supplies.

Industrial Power Supplies

Wide 2.8V to 60V input and 150V switch support industrial control, factory automation, and high-voltage sensor power.

Telecom Infrastructure

Low EMI (SSFM) and wide input range suit telecom and datacom power conversion, including negative output generation.

Medical Diagnostic Equipment

Low quiescent current and high-voltage capability enable reliable power for medical diagnostic and portable medical devices.

Portable Electronics

9µA Burst Mode® quiescent current extends battery life in portable instruments and battery-powered devices.

High-Voltage Boost/SEPIC/Inverting

The 1.5A, 150V switch and single FBX architecture simplify the design of high-voltage boost, SEPIC, and inverting converters.

REPLACEMENT GUIDANCE

Selecting an Alternative for LT8365HMSE#TRPBF

A replacement for the LT8365HMSE#TRPBF should not be selected solely by product category. The electrical characteristics, package, and pin configuration must be evaluated against the specific circuit requirements. The following alternatives are documented in the official Analog Devices product pages and datasheets.

Topology: Boost, SEPIC, Inverting

Input voltage: 2.8V–60V

Switch: 1.5A, 150V

Quiescent current: 9µA

Frequency: 100kHz–500kHz

Package: 16(12)-Lead MSOP-EP

Temperature range: –40°C to 150°C (H-Grade)

AEC-Q100 qualified

Pin-to-pin and functionally compatible alternatives (same family, different temperature grade or packaging):

Part Number	Temperature Range	Grade	Packaging
LT8365HMSE#TRPBF	–40°C to +150°C	H-Grade	Tape & Reel
LT8365HMSE#PBF	–40°C to +150°C	H-Grade	Tube
LT8365JMSE#TRPBF	–40°C to +150°C	J-Grade	Tape & Reel
LT8365EMSE#TRPBF	–40°C to +125°C	E-Grade	Tape & Reel

All alternative part numbers listed above are documented in the official Analog Devices product pages and datasheets. The LT8365HMSE#TRPBF is the H-grade (–40°C to +150°C) version in a 16(12)-lead MSOP package with an exposed pad and tape-and-reel packaging (2,500 units per reel). For tube packaging in the same grade, consider LT8365HMSE#PBF. For J-grade operation, consider LT8365JMSE#TRPBF. For E-grade operation, consider LT8365EMSE#TRPBF. For applications requiring different switch ratings, consider the LT8362 (2A/60V), LT8364 (4A/60V), or LT8361 (1A/100V). Select based on temperature grade, switch rating, input voltage, and packaging requirements.

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MANUFACTURER INFORMATION

Analog Devices

The LT8365 (LT8365HMSE#TRPBF) belongs to the LT836x family of low quiescent current boost/SEPIC/inverting converters from Analog Devices (originally Linear Technology). The device features an integrated 1.5A, 150V switch, a wide 2.8V to 60V input voltage range, and an ultralow 9µA quiescent current in Burst Mode® operation. Its unique single feedback pin (FBX) architecture enables easy configuration as a boost, SEPIC, or inverting converter with positive or negative output programming. The LT8365 is AEC-Q100 qualified and is available in a thermally enhanced 16-lead MSOP package with high-voltage pin spacing. It is recommended for new designs in automotive, industrial, telecom, medical diagnostic equipment, and portable electronics.

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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LT8365HMSE#TRPBF Technical Information

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Specifications

Product Attribute: Attribute Value

Part Number: LT8365HMSE#TRPBF

Manufacturer: Analog Devices Inc.

Package: 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad

Series: -

Package/Case: 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad

Packaging: Tape & Reel (TR)

Product Status: Active

Function: Step-Up, Step-Up/Step-Down

Output Configuration: Positive

Topology: Boost, SEPIC

Output Type: Transistor Driver

Number of Outputs: 1

Voltage - Input (Min): 2.8V

Voltage - Input (Max): 60V

Voltage - Output (Min/Fixed): -

Voltage - Output (Max): 150V (Switch)

Current - Output: 1.5A (Switch)

Frequency - Switching: 100kHz ~ 500kHz

Synchronous Rectifier: Yes

Operating Temperature: -40°C ~ 150°C (TJ)

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 16-MSOP-EP

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Part Number: LT8365HMSE#TRPBF

Manufacturer: Analog Devices Inc.

Package: 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad

Category: Voltage Regulators - DC DC Switching Regulators

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