Battery Module
Cell protection MOSFETs, charge / discharge control, and signal-path ICs for Li-ion packs
Battery-pack BMS designs need protection MOSFETs with ultra-low Rds(on) (to minimize loss across the charge/discharge path), tight Vth control (to enable predictable shutoff thresholds), and high SOA for surge events. Magnias's PDFN5060 SO-8FL parts cover the 30V to 60V class typical of single-cell, 2S, and small multi-cell packs. Combined with our load switches, ESD/TVS protection on cell-tap lines, and low-IQ LDOs for fuel-gauge / monitoring rails, customers can integrate a full BMS support set alongside their gas-gauge IC.
Application areas
Single-cell Li-ion protection (smartphone, IoT)
- Dual N-MOSFET (P+N or N+N back-to-back)
- Low-leakage Schottky
- Cell-tap ESD protection
- Sub-µA LDO (monitoring rail)
Multi-cell battery pack (laptop, e-bike)
- 30V / 60V N-Channel MOSFET (charge/discharge pair)
- Load switch (output gating)
- Voltage supervisor (cell-balancing trigger)
- Logic-level shifter (gauge ↔ host)
Battery management bus / interface
- ESD on SMBus / I²C lines
- Open-drain wire-OR ALERT line
- Push-pull level shifter (3.3V ↔ 1.8V)
- TVS on charger-input port
Energy storage / backup
- 100V / 150V high-current MOSFET (inverter stage)
- Hot-plug load switch (relay alternative)
- Wide-input LDO (housekeeping)
- Bridge rectifier (AC backup path)
Browse Magnias products for this segment
Battery pack designs often require both fast-trip protection (for short-circuit events) and tight Vth binning (for predictable cutoff). Many Magnias MOSFETs offer tighter Vth max than competitor benchmarks, ask our FAE team for the specific binning data.
Request samples or battery system review
Designing a BMS, charger, or energy-storage system? Tell us the cell chemistry, voltage class (1S / 2S / 3S / 4S+), and continuous current: our FAE team will recommend the protection MOSFET pair, load switch, and signal-path ICs, and ship samples within one business day.