LP3878 NSC [National Semiconductor], LP3878 Datasheet - Page 5

• Manufacturer Part Number: LP3878
• Description: Micropower 800mA Low Noise Ceramic Stable Voltage Regulator for Low Voltage Applications Designed for Use with Very Low ESR Output Capacitors
• Manufacturer: NSC [National Semiconductor]

Electrical Characteristics
(Continued)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of its rated operating conditions.
Note 2: ESD testing was performed using Human Body Model, a 100 pF capacitor discharged through a 1.5 kΩ resistor. The ESD rating of pin 8 is 1kV.
(MAX), the junction-to-ambient thermal resistance, θ
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, T
,
J
J−A
and the ambient temperature, T
. The maximum allowable power dissipation at any ambient temperature is calculated using:
A
The value θ
for the LLP (SD) package is specifically dependent on PCB trace area, trace material, and the number of layers and thermal vias. For improved
J−A
thermal resistance and power dissipation for the LLP package, refer to Application Note AN-1187. Exceeding the maximum allowable power dissipation will cause
excessive die temperature, and the regulator will go into thermal shutdown.
Note 4: If used in a dual-supply system where the regulator load is returned to a negative supply, the LP3878 output must be diode-clamped to ground.
Note 5: The output PNP structure contains a diode between the V
and V
terminals that is normally reverse-biased. Forcing the output above the input will turn
IN
OUT
on this diode and may induce a latch-up mode which can damage the part (see Application Hints).
Note 6: Limits are guaranteed through testing, statistical correlation, or design.
Note 7: Typical numbers reperesent the most likely parametric norm for 25˚C operation.
Note 8: See Typical Performance Characteristics curves.
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