SGM2546
2.7V to 23V, 7A, 10mΩ eFuse with Accurate Current Monitor and Transient Over-Current Blanking
The SGM2546 is a compact electronic fuse (eFuse) with a full suite of protection functions. With very few external components, the SGM2546 can provide multiple protection modes. To encounter overloads, output short-circuit, input voltage surges and high inrush current, the device is suitable as a robust defense.
The VOUT rise time can be programmed by setting an additional capacitor to the SS pin, which can minimize inrush current. Programmable over-voltage protection is used to turn off the device or clamp the output to a fixed voltage (pin-selectable) if the IN rises over a threshold value. Under output overload condition, the over-current protection works which limits the current or cut-off the circuit. The output current limit threshold and the transient over-current blanking timer can be adjusted by the user. The ILIM pin is also used for load current monitoring.
The SGM2546 is available in a Green TQFN-2×2-10L package.
- Input Voltage: 2.7V to 23V, Surge up to 28V
- Low On-Resistance: 10mΩ (TYP)
- Fast Over-Voltage Protection
- SGM2546AR: Adjustable Over-Voltage Lockout (OVLO) with 1.2μs (TYP) Response Time
- SGM2546BR: Pin-Selectable Threshold (3.91V, 5.81V, 13.95V) Over-Voltage Clamp (OVC) and 3μs Response Time (TYP)
- Over-Current Protection (OCP) with Load Current Monitor Output (ILIM)
- Current Limit
- Programmable Current Limit: 0.87A to 7.65A ±10% Accuracy for ILIM > 1.74A
- Programmable Transient Blanking Timer (ITIMER) Allowing Up to 2 × ILIM Peak Currents
- Load Current Monitor Accuracy: ±8% (MAX)
- Fast Short-Circuit Protection
- Fast-Trip Response Time: 550ns (TYP)
- Programmable (2 × ILIM) and Fixed Thresholds
- Active High Enable Input with Adjustable Under-Voltage Lockout Threshold (EN/UVLO)
- Programmable Output Ramp Time (SS)
- Over-Temperature Protection
- Digital Outputs
- Fault Indication (nFLT)
- Power Good Indication (PG) with Adjustable Threshold (PGTH)
- Available in a Green TQFN-2×2-10L Package
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