SC5203

The SC5203 is an 80 mA ultra low dropout linear regulator with a built in CMOS/TTL logic level Enable switch, designed specifically for battery powered applications where low quiescent current and low dropout are critical for battery longevity.The SC5203 uses a Semtech proprietary internal vertical PNP device for the pass element, providing a low dropout voltage of 300 mV at a load of 80 mA, while maintaining a low ground pin current.

Features of the SC5203 are:(1)low dropout voltage-300 mV@80 mA load; (2)guaranteed 80 ma output current; (3)low ground pin current; (4)reversed input polarity protection; (5)wide supply voltage range; (6)wide output voltage range; (7)logic controlled enable; (8)surface mount packaging (SOT-143).Each device contains a bandgap reference, error amplifier, vertical PNP pass element, thermal and current limiting circuitry and resistor divider network for setting output voltage.

The absolute maximum ratings of the SC5203 can be summarized as:(1)input supply voltage:-0.3 to 20V;(2)storage temperature:-60 to 150;(3)lead temperature:260;(4)operating temperature:-40 to 125;(5)power dissipation:internally limited.The SC5203 is packaged in a 4 pin SOT-143 surface mount package providing a very small footprint and requires only a 1 pF capacitor on the output for a minimum amount of external components.Available with adjustable and fixed output voltages, the SC5203 is ideally suited for cellular telephone, pager and laptop/palmtop computer applications.The products described in this document are designed, developed and manufactured as contemplated for general use, including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as contemplated (1) for any use that includes fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for any use where chance of failure is intolerable (i.e., submersible repeater and artificial satellite).