LP2981AIM5-5.0/NOPB National Semiconductor, LP2981AIM5-5.0/NOPB Datasheet - Page 5

• Manufacturer Part Number: LP2981AIM5-5.0/NOPB
• Description: IC REG LDO MICROPOWER SOT23-5
• Manufacturer: National Semiconductor

Specifications of LP2981AIM5-5.0/NOPB

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 16V
• Voltage - Dropout (typical): 0.2V @ 100mA
• Number Of Regulators: 1
• Current - Output: 100mA
• Current - Limit (min): 150mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP2981AIM5-5.0; LP2981AIM5-5.0TR

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: The ESD rating of pins 3 and 4 for the SOT-23 package is 1 kV.
, the junction-to-ambient thermal resistance, θ
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, T
,
J(MAX)
JA
and the ambient temperature, T
. The maximum allowable power dissipation at any ambient temperature is calculated using:
A
The value of θ
for the SOT-23 package is 220°C/W. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator
JA
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 LP2981 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. Reversing the polarity from V
to
IN
OUT
IN
V
will turn on this diode (see Application Hints).
OUT
Note 6: 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 7: 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 8: The ON/OFF inputs must be properly driven to prevent misoperation. For details, refer to Application Hints.
Note 9: See Typical Performance Characteristics curve(s).
Typical Application Circuit
1250604
*ON/OFF input must be actively terminated. Tie to V
if this function is not to be used.
IN
**Minimum Output Capacitance is shown to insure stability over full load current range. More capacitance provides superior dynamic performance and additional
stability margin (see Application Hints).
***Do not make connections to this pin.
5
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