LTC3115-1

RECOMMENDED FOR NEW DESIGNS

40V, 2A Synchronous Buck-Boost DC/DC Converter

Data Sheet (Rev. E) Product Selection Table

Part Models: 20
1ku List Price: Starting From $6.37

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Part Details

Wide V_IN Range: 2.7V to 40V
Wide V_OUT Range: 2.7V to 40V
1A Output Current for V_IN ≥ 3.6V, V_OUT = 5V
2A Output Current in Step-Down Operation for V_IN ≥ 6V
Programmable Frequency: 100kHz to 2MHz
Synchronizable Up to 2MHz with an External Clock
Up to 95% Efficiency
30µA No-Load Quiescent Current in Burst Mode^® Operation

Ultralow Noise Buck-Boost PWM
Internal Soft-Start
3µA Supply Current in Shutdown
Programmable Input Undervoltage Lockout
Small 4mm × 5mm × 0.75mm DFN Package
Thermally Enhanced 20-Lead TSSOP Package
AEC-Q100 Qualified for Automotive Applications

The LTC3115-1 is a high voltage monolithic synchronous buck-boost DC/DC converter. Its wide 2.7V to 40V input and output voltage ranges make it well suited to a wide variety of automotive and industrial applications. A proprietary low noise switching algorithm optimizes efficiency with input voltages that are above, below or even equal to the output voltage and ensures seamless transitions between operational modes.

Programmable frequency PWM mode operation provides low noise, high efficiency operation and the ability to synchronize switching to an external clock. Switching frequencies up to 2MHz are supported to allow use of small value inductors for miniaturization of the application circuit. Pin selectable Burst Mode operation reduces standby current and improves light load efficiency which, combined with a 3µA shutdown current, make the LTC3115-1 ideally suited for battery-powered applications. Additional features include output disconnect in shutdown, short-circuit protection and internal soft-start. The LTC3115-1 is available in thermally enhanced 16-lead 4mm × 5mm × 0.75mm DFN and 20-lead TSSOP packages.


	Features
LTC3115-1	-
LTC3115-2	Optimized for applications subject to fast (<1ms) input voltage transients

APPLICATIONS

24V/28V Industrial Applications
Automotive Power Systems
Telecom, Servers and Networking Equipment
FireWire Regulator
Multiple Power Source Supplies

Part Models: 20
1ku List Price: Starting From $6.37

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
LTC3115EDHD-1#PBF	16-Lead DFN (5mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115EDHD-1#TRPBF	16-Lead DFN (5mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115EDHD-1#WPBF	16-Lead DFN (5mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115EDHD-1#WTRPBF	16-Lead DFN (5mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115EFE-1#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115EFE-1#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115EFE-1#WPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115EFE-1#WTRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115HFE-1#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115HFE-1#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115IDHD-1#PBF	16-Lead DFN (5mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115IDHD-1#TRPBF	16-Lead DFN (5mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115IDHD-1#WPBF	16-Lead DFN (5mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115IDHD-1#WTRPBF	16-Lead DFN (5mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115IFE-1#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115IFE-1#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115IFE-1#WPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115IFE-1#WTRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115MPFE-1#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3115MPFE-1#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN
No Match Found
Jul 31, 2020 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
		PCN20_0245_Form Material_Report Delta Qualification Matrix Other Qualification Results Summary
LTC3115EDHD-1#PBF	PRODUCTION
LTC3115EDHD-1#TRPBF	PRODUCTION
LTC3115EFE-1#PBF	PRODUCTION
LTC3115EFE-1#TRPBF	PRODUCTION
LTC3115HFE-1#PBF	PRODUCTION
LTC3115HFE-1#TRPBF	PRODUCTION
LTC3115IDHD-1#PBF	PRODUCTION
LTC3115IDHD-1#TRPBF	PRODUCTION
LTC3115IDHD-1#WPBF	PRODUCTION
LTC3115IDHD-1#WTRPBF
LTC3115IFE-1#PBF	PRODUCTION
LTC3115IFE-1#TRPBF	PRODUCTION
LTC3115MPFE-1#PBF	PRODUCTION
LTC3115MPFE-1#TRPBF	PRODUCTION
Apr 12, 2022 - 22_0081 Moisture Sensitivity Level Rating Change of LTC3114-1, LTC3115-1, LTC3115-2 with #W for LFCSP Package.
		PCN22_0081_Form Material_Report Delta Qualification Matrix
LTC3115EDHD-1#WPBF
LTC3115EDHD-1#WTRPBF
LTC3115IDHD-1#WPBF	PRODUCTION
LTC3115IDHD-1#WTRPBF
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LTC3115EFE-1#PBF	PRODUCTION
LTC3115EFE-1#TRPBF	PRODUCTION
LTC3115HFE-1#PBF	PRODUCTION
LTC3115HFE-1#TRPBF	PRODUCTION
LTC3115IFE-1#PBF	PRODUCTION
LTC3115IFE-1#TRPBF	PRODUCTION
LTC3115MPFE-1#PBF	PRODUCTION
LTC3115MPFE-1#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
Dual-Supply Monitors 1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage Monitor
High Voltage Hot Swap Controllers 1
LTC4364	RECOMMENDED FOR NEW DESIGNS	Surge Stopper with Ideal Diode
PowerPath, Ideal Diodes, and Load Switches 1
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection
Silicon Oscillators 1
LTC6908		Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation

Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

LTC3115-1
LTC3115-2

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

Software-Defined Radio

Buy Now View Details

Features and Benefits

RF/SDR
- ADRV9002 transceiver
- 2 x receiver, 2 x transmitter
- LO frequency range 30 MHz to 6 GHz
- 12 kHz to 40 MHz frequency bandwidth
- Sampling rate 12 kSPS to 61.44 MSPS
External Device Clock Input
External MCS Input
RF Front-end
Processing System
- Zynq UltraScale+ MPSoC XCZU3EG
- DDR4 – 2 GB (x32)
- Boot source
  - SD card 3.0
  - Flash memory 128 MB

User Interfaces
- USB 3.1 Gen 1 – Type C
Ethernet 1000BASE-T RGMII
Display Port v1.2 (2 lanes, 5.4 Gbps)
SATA 3
USB (micro) debug interface
16 GPIOs (3V3 LVCMOS)

Power Sources
- USB Type-C (power only)
- USB Type-C (data)
  - Power Sink 5V/3A
  - Power Source 5V/0.9 A
- 802.3at POE compliant, 25.5 W Type2 (POE+)

Product Details

The AD-JUPITER-EBZ is a versatile software-defined platform based on Analog Devices ADRV9002 and Xilinx Zynq UltraScale+ MPSoC. The ADRV9002 is a new generation RF transceiver that has dual-channel transmitters, dual-channel receivers covering a frequency range of 30 MHz to 6 GHz. This device has a high-quality RF linearity performance and a set of advanced features like fast profiles switching, flexible power vs. performance configuration, fast frequency hopping, multi-chip synchronization, and digital pre-distortion (DPD) for narrow and wide band waveform.

The evaluation platform includes XCZU3EG processing device that has a wide range of interfaces, making the system capable of local processing or streaming to a remote host. It comes integrated in a self-contained ruggedized aluminum case, which gives flexibility in evaluating and prototyping across different environments.

APPLICATIONS

Aerospace and Defense
Communications
Advanced Education

Resources

AD-JUPITER-EBZ User Guide

LTC3115-1 Demo Board | 40V, 2A Synchronous Buck-Boost DC/DC Converter

Buy Now View Details

Product Details

Demonstration circuit 1687B features the LTC3115-1, a high voltage monolithic synchronous buck-boost converter.

The DC1687B demo board has two user-selectable operating modes: Burst Mode^® operation and forced continuous operation (fixed frequency PWM) (JP1). There is also an accurate programmable RUN pin which is used to enable the converter (JP2).

The DC1687B operates with a 2.7V to 40V input voltage range. The demo board has been designed with the output voltage set to 5V. The LTC3115-1 incorporates a proprietary low noise switching algorithm which optimizes efficiency with input voltages above, below or equal to the output voltage and ensures seamless transitions between operating modes.

The demo board has been programmed to operate at 1MHz in PWM mode to optimize small size with high efficiency operation.

The demo board also has optional provisions to back feed V_CC in order to increase efficiency in some 5V output applications. There is also a provision for an optional Schottky diode from SW2 to V_OUT for applications where V_OUT is greater than 20V and short circuit protection is desired. Consult the data sheet for more information on these options.

The LTC3115-1 data sheet has detailed information about the operation, specifications, and applications of the part. The data sheet should be read in conjunction with this quick start guide.

Resources

DC1687B - Design Files
1.14 M

DC1687B - Schematic
115.21 K

DC1687B - Demo Manual
278.12 K

Reference Designs

Stratix V Advanced System Development Board

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
Our reference designs are supported by an intuitive design tool set and IP
Our team can provide designs for quick prototypes that can speed time to market in the most complex applications