LP3987
Functional Pin Description
Pin Name
EN
BP
GND
VOUT
VIN
Pin Function
Chip Enable (Active High). Note that this pin is high impedance. There should be a pull
low 100kΩ resistor connected to GND when the control signal is floating.
Reference Noise Bypass
Ground
Output Voltage
Power Input Voltage
Function Block Diagram
Absolute Maximum Ratings
Supply Input Voltage-----------------------------------------------------------------------------------------------------------6V
Power Dissipation, PD @ TA = 25°C
SOT-23-5 --------------------------------------------------------------------------------------------------------------------400mW
Package Thermal Resistance
SOT-23-5,
θJA
-------------------------------------------------------------------------------------------------------------250°C/W
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------------260°C
Storage Temperature Range --------------------------------------------------------------------------------−65°C to 150°C
ESD Susceptibility
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------------2kV
MM(Machine-Mode)-----------------------------------------------------------------------------------------------------------200V
Recommended Operating Conditions
Supply Input Voltage-----------------------------------------------------------------------------------------------2.5V to 5.5V
EN Input Voltage ------------------------------------------------------------------------------------------------------0V to 5.5V
Operation Junction Temperature Range --------------------------------------------------------------−40°C to 125°C
Operation Ambient Temperature Range-----------------------------------------------------------------−40°C to 85°C
LP3987-datasheet
Oct.-2003
2-2
POWER [ LOWPOWER SEMICONDUCTOR INC ]
