LP2967ITPX-1825

The LP2967ITPX-1825 is one member of the LP2967 series.The LP2967 is a 150 mA, dual fixed-output voltage regulator designed to provide ultra low-dropout and low noise in battery powered applications.Using an optimized VIP (Vertically Integrated PNP) process,the LP2967 delivers unequalled performance in all specifications critical to battery powered designs:Dropout Voltage: Typically 240 mV at 150 mA load, and 6 mV at 1 mA load for each output.Ground Pin Current: Typically 1 mA at 150 mA load, and 200 A at 1 mA load for each output.

Features of the LP2967ITPX-1825 are:(1)ultra low drop-out voltage; (2)guaranteed 150mA output current, 300 mA peak; (3)smallest possible size (micro SMD package); (4)requires minimum external components; (5)stable with 2.2 F tantalum or ceramic capacitor; (6)output voltage accuracy ±1%; (7)< 2 A quiescent current when shut down; (8)wide supply voltage range (16V max.); (9)low Zout : 0.3 typical (10 Hz to 1 MHz); (10)over temperature/over current protection; (11)-40 to +125 junction temperature range; (12)custom voltages available.The internal power transistor in the LP2967 has an inherent parasitic diode. During normal operation, the input voltage is higher than the output voltage and the parasitic diode is reverse biased. However, if the output is pulled above the input in an application, then current flows from the output to the input if the parasitic diode gets forward biased.The output can be pulled above the input as long as the current in the parasitic diode is limited to 150mA.

The absolute maximum ratings of the LP2967ITPX-1825 can be summarized as:(1)ESD rating:1.5kV;(2)input supply voltage:0.3 to +16 V;(3)operating junction temperature:-40 to +125;(4)storage temperature range:65 to +150;(5)lead temperature(10 sec):+245.The output capacitor must meet the requirement for minimum capacitance value of 2.2 F and also have an appropriate ESR (equivalent series resistance) value.The LP2967 is actually designed to work with ceramic or tantalum output capacitors, utilizing circuitry which allows the regulator to be stable with an output capacitor whose ESR is as low as 4m. It may also be possible to use a film capacitor at the output, but this type is not as attractive for reasons of size and cost.