The SGM25120 is a hot-plug protection device providing dual-directional protection: it safeguards its output circuit from input-induced transients while simultaneously shielding its input from harmful short circuits and transient events originating from the output side.
The device includes an IMON option that generates a voltage proportional to the power supply current through the power supply device, which is set by the resistance of IMON pin to ground. An integrated high-efficiency charge pump drives the gate of the power MOSFET, enabling ultra-low-loss power delivery through enhanced power device with an extremely low on-resistance of 1.9mΩ to turn on.
During start-up, the output slew rate control mechanism, implemented via an external capacitor on the SS pin effectively suppresses inrush current. A dynamic current limiting unit, based on FET detection topology and combined with a precision resistor from the ILIM pin to the ground, supports programmable load current thresholds.
Full protection features include damaged MOSFET detection, current limit, thermal shutdown, over-voltage protection, and under-voltage protection.
The SGM25120 is available in a Green TLGA-4×4-24AL package.
- Input Voltage Range: 2.7V to 16V
- Output Current: 20A (MAX)
- Integrated Switch with 1.9mΩ RDSON
- IMON Accuracy: ±1.5% at TJ = +25℃, IOUT = 15A
- VIN/VOUT/Temperature Monitor
- Built-In MOSFET Driver
- 3.3V LDO Output
- PG Detector and Indication
- PG De-Asserts Low when VIN = 0V
- Fault Signal Output
- Integrated Current Sensing with Sense Output
- Programmable Over-Current Limit
- Programmable Short-Circuit Current Limit
- Pin Programmable Input Over-Voltage Protection Threshold (OV)
- Pin Programmable OCP Fault Regulation Time
- Adjustable Soft-Start (SS)
- Output Short-Circuit Protection (SCP)
- Over-Temperature Protection (OTP)
- Built-In Fuse Health Reporting
- Available in a Green TLGA-4×4-24AL Package
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