IPS4260LM [STMicroelectronics]

The IPS4260LM is a monolithic high speed (fSW up to 250 kHz) device, which can drive four independent capacitive, resistive or inductive loads with one side connected to supply voltage. The channels can be parallelized to reduce power dissipation. When connected to Vcc rail, four integrated catch diodes clamp the turn-off transients generated by inductive loads even with huge inductance; combined with proper external TVS connected to VCC or to GND the IC allows fast decay, too. Each channel is protected against overload or short circuit event: the intervention level can be set by an external resistor on ILIM pin . Built-in thermal shutdown protects the chip against overtemperature even in case of short-circuit. If enabled, the integrated cut-off protection features a non-dissipative protection in case of overload; it limits both the output average current value and, consequently, the device overheating. Cut-off delay/restart can be programmed by external resistors on CoD pin; it can be disabled by shorting CoD to GND. Two common diagnostic open drains pins (OL, for open load and FLT for cut-off and thermal shutdown) together with the four open drain on each INx pin (cut-off and thermal shutdown) feature an extensive diagnostic of the chip.

• 8 V to 50 V operating voltage range
• Four independent protected channels
• V_CC undervoltage lock-out
• High speed operation (t_r, t_f < 1 μs)
• Programmable load current limitation level by external resistor
• Typical operating load current: 0.5 A (per channel) / 2 A (one channel)
• Thermally independent junction overtemperature protections
• Programmable non-dissipative short-circuit protection (cut-off) by external resistor
• Open load (off-state) and short-to-ground activated by external pull-down resistors
• Fast demagnetization of inductive loads with integrated catch diodes clamping turn-off transients
• Ground and V_CC wire break protection
• V_CC overvoltage protection
• Common open load diagnostic
• Common thermal shutdown and overload diagnostic
• Per channel thermal shutdown diagnostic
• Designed to meet IEC 61131-2, IEC61000-4-2, IEC61000-4-4 and IEC61000-4-5
• Miniaturized HTSSOP20 package