L5964
Overview
- AEC-Q100 qualified
- Two step-down synchronous switching voltage regulators with internal power switches: - Wide operating input voltage range (from 3.3 V to 26 V) - Output voltage selectable by external divider (feedback voltage at 0.9 V) - 0.9 V minimum output, maximum output limited by maximum Duty Cycle - DC/DCs can work in Low Power Mode for reduced current consumption in low output Load - Internal high-side/ low-side NDMOS - 270 kHz and 2.2 MHz selectable free-run frequencies - 125 kHz < f < 2.3 MHz synchronization range at SYNCIN pin - Programmable current limits at 2 A and 4 A - Independent hardware enabling pins - Independent supply inputs - 180° phase shift between outputs - Synch out 90 ° phase shift vs DC-DC1 - Programmable switching frequency divider by 1, 2, 4, 8 between the two regulators - The two regulators can be paralleled
- Independent voltage supervisors/power-goods with selectable thresholds through external pin: - two available thresholds for UV/OV/PG signals: 90-120-95% or 80-110-85% (output voltage percentage)
- Soft-start, thermal protection
- One standby/linear regulator: - Output selectable with external resistor divider till 10 V - Soft start, hardware enable pin - 250 mA maximum current capability - Standby operative mode - Programmable power good thresholds (85% or 95% output voltage percentage) - Thermal protection
- Microcontroller reset with programmable duration, activated by output under voltage or watchdog fault
- External High Side Driver enable pin
- One integrated window watchdog (5 ms ≤ window ≤ 50 ms, with ± 20% tolerance)
- Short circuit protected outputs
- Low external components number
