Cross Reference

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), a well-defined Vth range (for predictable shutoff), and high SOA for surge events. Magnias MOSFETs run from 20V dual N+N parts for single cells to 60V to 150V TOLL-8L parts down to 0.6 mΩ for e-bike and energy-storage 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+N common-drain MOSFET (PMS5R5D02CU, 20V)
  • Low-leakage Schottky
  • Cell-tap ESD protection
  • Sub-µA LDO (monitoring rail)

Multi-cell battery pack (laptop, e-bike)

  • Charge / discharge MOSFETs: 30V to 60V for 2S to 4S packs, 80V to 100V for 10S to 13S e-bike packs
  • eFuse for laptop-pack outputs up to 24V (PSW7618-F33)
  • Comparator for voltage-threshold detect (MVC152, 210 nA)
  • Logic-level shifter (gauge ↔ host)

Battery management bus / interface

  • ESD on SMBus / I²C lines
  • Open-drain wire-OR ALERT line
  • Level shifter for SMBus / I²C (3.3V ↔ 1.8V)
  • TVS on charger-input port

Energy storage / backup

  • 100V / 150V high-current MOSFET (inverter stage)
  • 60V to 100V MOSFET pack switch, relay alternative (PMS0R6N06EL8, PMS1001AL8)
  • Wide-input LDO (housekeeping)
  • Bridge rectifier (AC backup path)

Browse Magnias products for this segment

MOSFET Load Switch ESD TVS Schottky LDO Logic Gates Zener

Battery pack designs need fast-trip protection for short-circuit events. Each MOSFET datasheet gives the Vth range and SOA curves for checking cutoff and surge margins.

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 replies within one business day with recommended parts (protection MOSFET pair, load switch, signal-path ICs) and sample availability.