LP2987/LP2988 Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay
March 1999
...
LP2987/LP2988 Micropower, 200 mA Ultra Low-Dropout
Voltage Regulator with Programmable Power-On Reset Delay
March 1999
LP2987/LP2988 Micropower, 200 mA Ultra Low-Dropout
Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988)
General Description
The LP2987/8 are fixed-output 200 mA precision LDO
voltage regulators with power-ON reset delay which can be implemented using a single external capacitor. The LP2988 is specifically designed for noise-critical applications. A single external capacitor connected to the Bypass pin reduces regulator output noise. Using an optimized VIP™ (Vertically Integrated PNP) process, these regulators deliver superior performance: Dropout
Voltage: 180 mV @ 200 mA load, and 1 mV @ 1 mA load (typical). Ground Pin Current: 1 mA @ 200 mA load, and 200 µA @ 10 mA load (typical). Sleep Mode: The LP2987/8 draws less than 2 µA quiescent current when shutdown pin is held low. Error Flag/Reset: The error flag goes low when the output drops approximately 5% below nominal. This pin also provides a power-ON reset signal if a capacitor is connected to the DELAY pin. Precision Output: Standard product versions of the LP2987 and LP2988 are available with output
voltages of 5.0V, 3.8V, 3.3V, 3.2V, 3.0V, or 2.8V, with guaranteed accuracy of 0.5% (“A” grade) and 1% (standard grade) at room temperature.
Features
n n n n n n n n n n n n Ultra low dropout
voltage Power-ON reset delay requires only one component Bypass pin for re...
