Description
MAX1811ESA-T – Single-Cell Li-Ion Battery Charger IC
The MAX1811ESA-T is a standalone, linear Li-Ion battery charger IC designed to charge a single-cell lithium-ion (Li-Ion) battery from either a USB port or an AC adapter. It requires no external MOSFETs and features automatic charge termination for safe and efficient charging.
Key Features:
✔ USB & Adapter Compatibility – Supports 100mA and 500mA charge current from USB, up to 1A with an AC adapter.
✔ No External Components Required – Integrated power MOSFETs eliminate the need for external switches.
✔ Fixed 4.2V Charge Termination Voltage – Ensures safe and full charging.
✔ Precharge Mode – Charges deeply discharged batteries before applying full charge current.
✔ Thermal Regulation & Protection – Prevents overheating by adjusting charge current dynamically.
✔ Charge Status Indicators – Allows easy monitoring of charging progress via LEDs.
✔ Compact & Low-Power Design – Available in an 8-pin SOIC (ESA) package.
Technical Specifications:
| Parameter | Value |
|---|---|
| Input Voltage (VIN) | 4.25V – 6.5V |
| Battery Type | Single-cell Li-Ion |
| Charge Current | 100mA, 500mA (USB); up to 1A (Adapter) |
| Charge Termination | 4.2V (Fixed) |
| Operating Temperature | -40°C to +85°C |
| Package Type | 8-Pin SOIC (ESA) |
Applications:
✅ USB-Powered Devices – Smartphones, MP3 players, and portable electronics.
✅ Embedded Systems – Battery-powered circuits and IoT devices.
✅ Wearables & DIY Projects – Perfect for compact Li-Ion charging solutions.
✅ Prototyping & Development – Ideal for quick battery management integration.
Package Includes:
✔ 1 x MAX1811ESA-T Li-Ion Battery Charger IC
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