HY2212 BB3A Battery Management IC SOT-23-6

HY2212 BB3A Battery Management IC (SOT-23-6) is a compact protection solution for single-cell lithium-ion and lithium-polymer batteries. It helps designers safeguard batteries against overcharge, over-discharge, and short-circuit conditions, ensuring long life and safe operation in portable devices.

Key Features:

• Integrated Protection: Provides overcharge, over-discharge, and short-circuit protection in a single chip.
• Compact SOT-23-6 Package: Saves PCB space and fits well into slim battery-powered designs.
• Low Standby Current: Minimizes battery drain during idle operation.
• Precise Voltage Thresholds: Offers accurate cut-off points for reliable battery management.
• Fast Response: Protects cells quickly against fault conditions.

Technical Specifications:

• Operating Voltage Range: 1.5 V to 8 V
• Overcharge Detection Voltage: ~4.25 V ± 0.05 V
• Overdischarge Detection Voltage: ~2.5 V ± 0.05 V
• Overcurrent Detection: Programmable via external sensing resistor
• Quiescent Current: Typically under 1 µA
• Operating Temperature: −40 °C to +85 °C

Mechanical Specifications:

• Package: SOT-23-6 surface-mount
• Pin Count: 6 pins
• Lead Finish: Matte tin-plated for reliable soldering
• Body Material: Epoxy resin molding compound

Dimensions:

• Body Length: ~2.9 mm
• Body Width: ~1.6 mm
• Body Height: ~1.1 mm
• Lead Pitch: 0.95 mm

Pinout and Wiring:

• Pin 1: VDD – Battery positive input
• Pin 2: GND – Ground connection
• Pin 3: CS – Current sense input for overcurrent detection
• Pin 4: OD – Control output for discharge MOSFET
• Pin 5: OC – Control output for charge MOSFET
• Pin 6: VM – Voltage monitoring input
• Wiring Note: Connect OD and OC to external MOSFETs for battery charging and discharging paths. Place a sensing resistor on CS for accurate current protection.

Datasheet Reference:

• Refer to the official HY2212 datasheet for detailed electrical parameters, timing diagrams, and recommended application circuits.

Applications:

• Lithium-Ion Protection Circuits: Safeguard single-cell rechargeable batteries in consumer devices.
• Portable Electronics: Use in smartphones, MP3 players, and handheld gadgets.
• Rechargeable Modules: Integrate into battery packs for added safety.
• Wearables: Compact footprint makes it ideal for smartwatches and small IoT devices.

Equivalent Models:

• DW01: Popular single-cell Li-ion battery protection IC with similar function.
• S8254 Series: Multi-cell lithium protection ICs from Seiko Instruments.
• FS8205A (with MOSFETs): Commonly paired with protection ICs like HY2212.

Package Includes:

• 1 x HY2212 BB3A Battery Management IC (SOT-23-6)