LTC4000-1

RECOMMENDED FOR NEW DESIGNS

High Voltage High Current Controller for Battery Charging with Maximum Power Point Control

Part Models: 8
1ku List Price: Starting From $4.72

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Part Details

Maximum Power Control: Solar Panel Input Compatible
Complete High Performance Battery Charger When Paired with a DC/DC Converter
Wide Input and Output Voltage Range: 3V to 60V
Input Ideal Diode for Low Loss Reverse Blocking and Load Sharing
Output Ideal Diode for Low Loss PowerPath^™ and Load Sharing with the Battery
Programmable Charge Current: ±1% Accuracy
±0.25% Accurate Programmable Float Voltage
Programmable C/X or Timer Based Charge Termination
NTC Input for Temperature Qualified Charging
28-Lead 4mm × 5mm QFN or SSOP Packages

The LTC4000-1 is a high voltage, high performance controller that converts many externally compensated DC/DC power supplies into full-featured battery chargers with maximum power point control. In contrast to the LTC4000, the LTC4000-1 has an input voltage regulation loop instead of the input current regulation loop.

Features of the LTC4000-1’s battery charger include: accurate (±0.25%) programmable float voltage, selectable timer or current termination, temperature qualified charging using an NTC thermistor, automatic recharge, C/10 trickle charge for deeply discharged cells, bad battery detection and status indicator outputs. The battery charger also includes precision current sensing that allows lower sense voltages for high current applications.

The LTC4000-1 supports intelligent PowerPath control. An external PFET provides low loss reverse current protection. Another external PFET provides low loss charging or discharging of the battery. This second PFET also facilitates an instant-on feature that provides immediate downstream system power even when connected to a heavily discharged or shorted battery.

The LTC4000-1 is available in a low profile 28-lead 4mm × 5mm QFN and SSOP packages.


	LTC4000	LTC4000-1
Input Voltage Regulation MPPC	No	Yes
Input Current Monitoring	Yes	Yes
Input Current Regulation	Yes	No

Applications

Solar Powered Battery Charger Systems
Battery Charger with High Impedance Input Source, e.g., Fuel Cell or Wind Turbine
Battery Equipped Industrial or Portable Military Equipments

Part Models: 8
1ku List Price: Starting From $4.72

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
LTC4000EGN-1#PBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4000EGN-1#TRPBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4000EUFD-1#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4000EUFD-1#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4000IGN-1#PBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4000IGN-1#TRPBF	28-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4000IUFD-1#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4000IUFD-1#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking
		PCN24_0235_Form Material_Report Other Delta Qualification Matrix
LTC4000EGN-1#PBF	PRODUCTION
LTC4000EGN-1#TRPBF	PRODUCTION
LTC4000IGN-1#PBF	PRODUCTION
LTC4000IGN-1#TRPBF	PRODUCTION
Aug 10, 2022 - 22_0177 Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL
		PCN22_0177_Form Material_Report Delta Qualification Matrix
LTC4000EGN-1#PBF	PRODUCTION
LTC4000EGN-1#TRPBF	PRODUCTION
LTC4000IGN-1#PBF	PRODUCTION
LTC4000IGN-1#TRPBF	PRODUCTION
Jan 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products
		PCN21_0269_Form Material_Report Detailed Change Description Qualification Results Summary
LTC4000EUFD-1#PBF	PRODUCTION
LTC4000EUFD-1#TRPBF	PRODUCTION
LTC4000IUFD-1#PBF	PRODUCTION
LTC4000IUFD-1#TRPBF	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
Battery Fuel Gauge and Coulomb Counter 1
LTC2943	PRODUCTION	Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement
Dual-Supply Monitors 1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage Monitor
PowerPath, Ideal Diodes, and Load Switches 1
LTC4417	RECOMMENDED FOR NEW DESIGNS	Prioritized PowerPath^™ Controller
Switching Battery Chargers 1
LTC4020	RECOMMENDED FOR NEW DESIGNS	55V Buck-Boost Multi-Chemistry Battery Charger

USB Isolators 1
LTM2884	PRODUCTION	Isolated USB Transceiver with Isolated Power

Tools & Simulations

LTspice 1

LTC4000-1/LT3845A Demo Circuit - Battery Charger for Three LiFePO4 Cells with a Solar Panel Input (20-60V to 10.8Vfloat @ 10A Max)

Models for the following parts are available in LTspice:

LTC4000
LTC4000-1

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

LTC4000-1 Battery Charger Controller and PowerPath Manager with Maximum Power Point Control

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Product Details

Demonstration circuit 1830B is a battery charger controller and PowerPath™ manager with maximum power point control (MPPC) featuring the LTC4000-1. MPPC extracts near maximum power from high impedance sources such as solar panels, wind turbines or fuel cells. MPPC is achieved by means of an input voltage regulation control loop. This board should be connected to a front-end DC/DC power supply for a complete charger solution.

Resources

DC1830B-CD - Demo Manual
8/25/2017

DC1830B - Design Files
1/10/2013

DC1830B - Schematic
1/10/2013

LTC4000-1 Demo Board | 6V ≤ VIN ≤ 36V, Buck-Boost Battery Charger Controller with MPPC and PowerPath Manager, VOUT = 14.6V @ 5A

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Product Details

Demonstration circuit 1721B is a 14.6V, 5A battery charger and PowerPath™ manager with 6VIN to 36VIN buck-boost converter featuring the LTC4000-1/LTC3789, targeted at 4-cell LiFePO4 applications. The LTC4000-1 has an input voltage regulation loop for Maximum Power Point Control (MPPC). MPPC extracts near maximum power from high impedance sources such as solar panels, wind turbines, or fuel cells.

The output of this demo board was specifically tailored for a Tenergy 10A-hour battery, P/N 30207. Other voltages can be set by changing ROFB2 and RBFB2. The desired nominal voltage can be accurately trimmed by using trim resistors R42 and R43. For example, for 14.4V battery float voltage, change ROFB2 and RBFB2 to 86.6k, and add 7.5M at R42 and R43 for greater set point accuracy.

This circuit was designed to demonstrate the high levels of performance, efficiency, and small solution size attainable using these ICs in a buck-boost converter battery charger, intelligent PowerPath manager, and power supply. It operates at 400kHz and produces a regulated 5A/14.6V battery charger output as well as a system output of up to 6.25A from an input voltage range of 6V to 36V: suitable for a wide variety of portable applications including instruments, industrial equipment, power tools, and computers.