LTC3639

RECOMMENDED FOR NEW DESIGNS

High Efficiency, 150V 100mA Synchronous Step-Down Regulator

Data Sheet (Rev. E) Product Selection Table

Part Models: 12
1ku List Price: Starting From $5.54

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Overview

Wide Operating Input Voltage Range: 4V to 150V
Synchronous Operation for Highest Efficiency
Internal High Side and Low Side Power MOSFETs
No Compensation Required
Adjustable 10mA to 100mA Maximum Output Current
Low Dropout Operation: 100% Duty Cycle
Low Quiescent Current: 12μA
Wide Output Range: 0.8V to V_IN

0.8V ±1% Feedback Voltage Reference
Precise RUN Pin Threshold
Internal or External Soft-Start
Programmable 1.8V, 3.3V, 5V or Adjustable Output
Few External Components Required
Programmable Input Overvoltage Lockout
Thermally Enhanced High Voltage MSOP Package
AEC-Q100 Qualified for Automotive Applications

Part Models: 12
1ku List Price: Starting From $5.54

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC3639EMSE#PBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639EMSE#TRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639HMSE#PBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639HMSE#TRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639HMSE#WPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639HMSE#WTRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639IMSE#PBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639IMSE#TRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639IMSE#WPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639IMSE#WTRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639MPMSE#PBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC3639MPMSE#TRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report
LTC3639EMSE#PBF	PRODUCTION
LTC3639EMSE#TRPBF	PRODUCTION
LTC3639HMSE#PBF	PRODUCTION
LTC3639HMSE#TRPBF	PRODUCTION
LTC3639IMSE#PBF	PRODUCTION
LTC3639IMSE#TRPBF	PRODUCTION
LTC3639MPMSE#PBF	PRODUCTION
LTC3639MPMSE#TRPBF	PRODUCTION
May 22, 2024 - 24_0067 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADCS to Vanguard Int. (Taiwan)
		PCN24_0067_Form Material_Report Other
LTC3639EMSE#PBF	PRODUCTION
LTC3639EMSE#TRPBF	PRODUCTION
LTC3639HMSE#PBF	PRODUCTION
LTC3639HMSE#TRPBF	PRODUCTION
LTC3639HMSE#WPBF	PRODUCTION
LTC3639HMSE#WTRPBF	PRODUCTION
LTC3639IMSE#PBF	PRODUCTION
LTC3639IMSE#TRPBF	PRODUCTION
LTC3639IMSE#WPBF	PRODUCTION
LTC3639IMSE#WTRPBF	PRODUCTION
LTC3639MPMSE#PBF	PRODUCTION
LTC3639MPMSE#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0129_Form Material_Report
LTC3639EMSE#PBF	PRODUCTION
LTC3639EMSE#TRPBF	PRODUCTION
LTC3639HMSE#PBF	PRODUCTION
LTC3639HMSE#TRPBF	PRODUCTION
LTC3639IMSE#PBF	PRODUCTION
LTC3639IMSE#TRPBF	PRODUCTION
LTC3639MPMSE#PBF	PRODUCTION
LTC3639MPMSE#TRPBF	PRODUCTION
Jun 21, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report
LTC3639HMSE#WPBF	PRODUCTION
LTC3639HMSE#WTRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Ideal Diodes and PowerPath Controllers 1
LTC4417	RECOMMENDED FOR NEW DESIGNS	Prioritized PowerPath^™ Controller
Overvoltage & Overcurrent Protectors 1
LTC4366	RECOMMENDED FOR NEW DESIGNS	High Voltage Surge Stopper

Parts	Product Life Cycle	Description
LTC3638	RECOMMENDED FOR NEW DESIGNS	High Efficiency, 140V 250mA Step-Down Regulator

Tools & Simulations

LTspice 1

LTC3639 Demo Circuit - High Efficiency, 150V Synchronous Buck Converter (4-150V to 3.3V @ 100mA)

Models for the following parts are available in LTspice:

LTC3639

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

LTC3639EMSE Demo Board | Sync Buck, 4V ≤ VIN ≤ 150V, VOUT = 1.8V/3.3V/5V/Adj @ 100mA

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Product Details

Demonstration circuit 1901A is a 150V input, 100mA output DC/DC power supply featuring the LTC3639. The IC operates in a high efficiency Burst Mode^® operation and includes internal high and low side power MOSFETs. The board will accept an input voltage between 4V and 150V, and provide jumper selected output voltages of 1.8V, 3.3V, 5V and an option for additional voltages. The IC includes internal soft-start and a provision for increasing soft-start time.

Resources

DC1901A - Schematic
4/16/2013

DC1901A - Demo Manual
4/9/2013

DC1901A - Design Files
4/16/2013

72 V to 96 V Battery Management System for Electric 2- and 3-Wheelers

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Features and Benefits

Variable 72 V to 96 V voltage range, suitable for E2W/E3W applications
ASIL-D compliant and automotive grade BMS chip
Built-in charge, pre-charge, and discharge circuitry
1.8 mV total measurement error (TME) for cell voltage monitoring
High performance cell/pack voltage and current monitoring
On-board isoSPI communication
Low Power Cell Monitoring (LPCM) capability
GPIO Controllable FET Monitoring
ADBMS6830 GPIO input ready for NTC sensors
Low Power MAX32690 MCU
UART and CAN Communication
SOC and SOH thru Enhanced Coulomb Counting Technique
E2W/E3W Basic System Behavior Modes
Embedded Application-ready (via CLI)
With GUI capable of the following measurements and fault detection:
- Cell Monitoring
- Voltage and Current Pack Monitoring
- Charge Current Monitoring
- Discharge Current Monitoring
- Temperature Monitoring
- Cell OV/UV Detection
- Cell/GPIO Open-wire Detection
- Cell Balancing

Product Details

The AD-BMSE2E3W-SL is a BMS reference design for light electric vehicles (LEVs). With a voltage range of 72 V to 96 V, this solution is suitable for electric 2-wheeler and 3-wheeler vehicles with high current capacity ranging up to 100 A.

This single-board system utilizes the best-in-class ADBMS6830 cell monitoring chip that is capable of monitoring up to 2x 16-channel. This board also features battery pack monitoring using the ADBMS2950. The ADBMS6822 dual isoSPI transceiver provides a built-in 2-wire reversible isoSPI connection, which simplifies the communication of BMS parts in a daisy chain configuration before sending the data to SPI lines in the microcontroller.

The on-board MAX32690 MCU, when loaded with the firmware, can perform BMS measurements such as cell voltage (average and filtered), and pack voltage and pack current measurement. The board also has a charge, pre-charge, and discharge mode that can be controlled by the ADBMS2950 pack monitor chip.

The AD-BMSE2E3W-SL is designed to perform either in embedded mode or using a GUI, where it calculates the battery's State of Charge (SoC) and State of Health (SoH) through enhanced coulomb counting technique.

APPLICATIONS