LTC4000-1

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. B) Product Selection Table
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Overview

  • 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
LTC4000-1
High Voltage High Current Controller for Battery Charging with Maximum Power Point Control
10.8V at 10A Charger for Three LiFePO4 Cells with a Solar Panel Input Solar Panel Input Regulation, Achieves Max Power Point to Greater than 98% Product Package 1 Product Package 2
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Documentation

Data Sheet 1

User Guide 2

Technical Articles 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Battery Charger ICs 1
LTC4020
RECOMMENDED FOR NEW DESIGNS 55V Buck-Boost Multi-Chemistry Battery Charger
Battery Monitors & Fuel Gauges 1
LTC2943
NOT RECOMMENDED FOR NEW DESIGNS Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement
Circuit Monitors 1
LTC2960
RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Ideal Diodes and PowerPath Controllers 1
LTC4417
RECOMMENDED FOR NEW DESIGNS Prioritized PowerPath™ Controller
Interface Transceivers 1
LTM2884
PRODUCTION Isolated USB Transceiver with Isolated Power
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC4000
  • LTC4000-1
LTspice

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

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1721B-B

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.

eval board
schematic 6
schematic 7
DC1830B-C

LTC4000EUFD-1 Demo Board I 20V ≤ VIN ≤ 60V, Battery Charger Controller and PowerPath Manager, MPPC, VOUT = 14.6V @ 5A

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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. 


 


 


eval board
schematic 8
DC1830B-D

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. 


 


 
DC1721B-B
LTC4000-1 Demo Board | 6V ≤ VIN ≤ 36V, Buck-Boost Battery Charger Controller with MPPC and PowerPath Manager, VOUT = 14.6V @ 5A
DC1721B-B Demo Board DC1721B-B Demo Board DC1721B-B Demo Board DC1721B-B Demo Board DC1721B - Schematic
DC1830B-C
LTC4000EUFD-1 Demo Board I 20V ≤ VIN ≤ 60V, Battery Charger Controller and PowerPath Manager, MPPC, VOUT = 14.6V @ 5A
DC1830B-C - Schematic DC1830B-CD
DC1830B-D
LTC4000-1 Battery Charger Controller and PowerPath Manager with Maximum Power Point Control
DC1830B-CD

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