UVLOUndervoltage Lockout
UVLOUnder Voltage Lock Out
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- UVLO (Under-voltage lockout protection) preventing deep discharge, protecting the battery.
The STHS237x family consists of devices for all the UVLO limits configurations: IEEE compliant (STHS2375), programmable (STHS2376), and for legacy systems (STHS2377).
Features include a floating gate driver designed for bootstrap operation, excellent dv/dt immunity, excellent negative VS transient immunity, a wide VCC range, UVLO on low-side and high-side, Schmitt-trigger input with internal pull-down, output in phase with input, and excellent latch immunity on all inputs & outputs.
An adjustable OVP threshold voltage, Input current telemetry, and under-voltage lockout (UVLO) with latching mode options are also included.
An UVLO feature is provided to ensure proper operation under power-sag conditions which prevents the external power MOSFET from overheating.
The LED driver is equipped with Undervoltage-Lockout (UVLO) and will prevent damage, should the DC power supply's voltage fall below adequate levels.
Once enough vibration cycles have passed, the input capacitor of the conversion circuit has accumulated enough charge to reach UVLO rising of the conversion circuit, which turns on the buck converter to start charging the output capacitor." (Figure 1)
To ensure mobile device safety, the new IC integrates a protocol authentication circuit for power transfers, foreign object detection functions, under-voltage lockout (UVLO) and over voltage detection (OVLO) functions, as well as thermal shutdown function (TSD).
In addition, the FAN53525 Series offers a programmable slew rate for voltage transitions, PFM mode for high efficiency in light load, input under-voltage lockout (UVLO), thermal shutdown and overload protection, and comes in a 15-bump wafer-level chip scale package (WLCSP).
The SO 16N-packaged device implements adaptive UVLO. Pricing starts at $1.50 in 2,500 quantities.