LTC4070IMS8E#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Battery Charger
• Characteristics: High Efficiency, Low Quiescent Current, Small Package Size
• Package: MSOP-8
• Essence: Charging and Management of Lithium-Ion Batteries
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Input Voltage Range: 4.95V to 6.5V
• Charge Current: Up to 800mA
• Programmable Charge Termination Current: 1/10th, 1/20th, or 1/40th of the Charge Current
• Preconditioning for Deeply Discharged Cells
• Automatic Recharge
• Thermal Regulation Maximizes Charging Rate without Risk of Overheating
• Charge Current Monitor Output
• Undervoltage Lockout
• Reverse Leakage Protection
• Temperature Range: -40°C to +85°C

Pin Configuration

The LTC4070IMS8E#TRPBF package has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. PROG: Charge Termination Current Programming Pin
4. STAT: Charge Status Indicator
5. CE: Enable Pin
6. VBAT: Battery Voltage
7. ISET: Charge Current Programming Pin
8. VOUT: Output Voltage

Functional Features

• High charging efficiency ensures faster battery charging.
• Low quiescent current minimizes power consumption when not in use.
• Small package size allows for compact designs.
• Programmable charge termination current provides flexibility.
• Preconditioning feature revives deeply discharged batteries.
• Automatic recharge feature restarts charging after battery removal.
• Thermal regulation prevents overheating during charging.
• Charge current monitor output enables external monitoring.
• Undervoltage lockout protects the battery from deep discharge.
• Reverse leakage protection prevents current flow from battery to charger.

Advantages

• High charging efficiency leads to shorter charging times.
• Low quiescent current prolongs battery life.
• Small package size allows for space-saving designs.
• Programmable charge termination current offers customization.
• Preconditioning feature extends battery lifespan.
• Automatic recharge ensures uninterrupted charging.
• Thermal regulation prevents damage due to overheating.
• Charge current monitor output enables easy monitoring.
• Undervoltage lockout protects the battery from damage.
• Reverse leakage protection enhances safety.

Disadvantages

• Limited input voltage range (4.95V to 6.5V).
• Maximum charge current limited to 800mA.

Working Principles

The LTC4070IMS8E#TRPBF is a battery charger IC designed specifically for lithium-ion batteries. It operates by converting an input voltage within the range of 4.95V to 6.5V into a regulated output voltage suitable for charging the battery. The IC incorporates various features such as programmable charge termination current, preconditioning, automatic recharge, thermal regulation, and undervoltage lockout to ensure safe and efficient charging.

When connected to a power source, the LTC4070IMS8E#TRPBF regulates the charging current based on the programmed charge current and termination current settings. It monitors the battery voltage and adjusts the charging rate accordingly. The IC also includes thermal regulation to prevent overheating during charging, which could potentially damage the battery.

The charge status indicator pin provides information about the charging process, allowing external monitoring. The undervoltage lockout feature protects the battery from deep discharge, preventing potential damage. Additionally, the reverse leakage protection prevents any current flow from the battery to the charger, ensuring safety.

Detailed Application Field Plans

The LTC4070IMS8E#TRPBF is widely used in various applications that require the charging and management of lithium-ion batteries. Some potential application fields include:

1. Portable Electronics: Smartphones, tablets, portable gaming devices, and other battery-powered consumer electronics.
2. Wearable Devices: Fitness trackers, smartwatches, and other wearable gadgets.
3. Medical Devices: Portable medical equipment, patient monitoring devices, and medical implants.
4. Industrial Equipment: Handheld instruments, wireless sensors, and remote monitoring systems.
5. Internet of Things (IoT): Battery-powered IoT devices, such as sensors, actuators, and communication modules.

Detailed and Complete Alternative Models

1. LTC4070IMS8E-4.2#TRPBF: Similar to LTC4070IMS8E#TRPBF, but with a fixed charge termination current of 1/40th of the charge current and an output voltage of 4.2V.
2. LTC4070IMS8E-4.35#TRPBF: Similar to LTC4070IMS8E#TRPBF, but with a fixed charge termination current of 1/40th of the charge current