AT8254 3S/4S Li-ion Multi-Cell Battery Protection IC
$0.74
Multi-Cell Li-ion Battery Protection IC
For 3-Cell or 4-Cell Series Battery Packs
Operating Voltage: 3V ~ 24V
3-Level Overcurrent Protection
Product Overview
The AT8254 is a high-precision protection IC for 3-cell or 4-cell series lithium-ion / lithium-polymer battery packs. It provides per-cell overcharge detection (3.90V to 4.35V ±25mV) and overdischarge detection (2.3V to 2.7V ±80mV), with charging and discharging control through dedicated terminals.
The AT8254 features 3-level discharge overcurrent protection (0.20V / 0.50V / VC1−1.1V) with external-capacitor-programmable delays for overcharge, overdischarge, and level-1 overcurrent detection. Built with high-voltage-tolerant components (absolute maximum 26V), it is suitable for power tools, e-bikes, and multi-cell portable devices.
Specifications
| Application | 3-Cell / 4-Cell Series Li-ion Battery Pack |
| Operating Voltage Range | 3V to 24V |
| Absolute Maximum Voltage | 26V |
| Overcharge Detection Voltage | 3.90V to 4.35V (±25mV) |
| Overcharge Release Voltage | 3.80V to 4.15V (±80mV) |
| Overdischarge Detection Voltage | 2.3V to 2.7V (±80mV) |
| Overdischarge Release Voltage | 2.7V to 3.0V (±100mV) |
| Overcurrent Detection 1 | 0.20V (±25mV) |
| Overcurrent Detection 2 | 0.50V (±100mV) |
| Overcurrent Detection 3 | VC1 − 1.1V (±300mV) |
| Delay Programming | External Capacitors (VOC, VOD, OC1) |
| Operating Temperature | −40°C to +85°C |
| Weight | 0.3 lbs |
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