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.