lp2980-adjep National Semiconductor Corporation, lp2980-adjep Datasheet - Page 4

• Manufacturer Part Number: lp2980-adjep
• Description: Micropower Sot, 50 Ma Ultra Low-dropout Adjustable Voltage Regulator
• Manufacturer: National Semiconductor Corporation

www.national.com
Note 4: 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 5: The ESD rating of pins 3 and 4 is 1 kV.
Note 6: The maximum allowable power dissipation is a function of the maximum junction temperature, T
A
The value of θ
will go into thermal shutdown.
Note 7: If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2980-ADJEP output must be diode-clamped to ground.
Note 8: The output PNP structure contains a diode between the V
V
Note 9: Limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality
Control (SQC) methods. The limits are used to calculate National's Average Outgoing Quality Level (AOQL).
Note 10: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a 1V differential.
Note 11: The ON/OFF input must be properly driven to prevent possible misoperation. For details, refer to Application Hints.
Note 12: See Typical Performance Characteristics curves.
Note 13: Testing and other quality control techniques are used to the extent deemed necessary to ensure product performance over the specified temperature
range. Product may not necessarily be tested across the full temperature range and all parameters may not necessarily be tested. In the absence of specific
PARAMETRIC testing, product performance is assured by characterization and/or design.
Typical Performance Characteristics
I
L
, and the ambient temperature, T
OUT
= 1 mA, ON/OFF pin tied to V
will turn on this diode (see Application Hints).
J-A
for the SOT-23 package is 300°C/W. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator
Dropout Voltage vs. Temperature
Output Voltage vs. Temperature
A
. The maximum allowable power dissipation at any ambient temperature is calculated using:
IN
, R
ADJ
= 86.6k, and test circuit is as shown in Basic Application Circuit.
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IN
and V
OUT
terminals that is normally reverse-biased. Reversing the polarity from V
4
Unless otherwise specified: T
Dropout Voltage vs. Load Current
Dropout Characteristics
J
(MAX), the junction-to-ambient thermal resistance, θ
A
= 25°C, V
IN
= V
O
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(NOM) + 1V,
IN
to
J-