LP2981AIM5-2.5 National Semiconductor, LP2981AIM5-2.5 Datasheet - Page 5

• Manufacturer Part Number: LP2981AIM5-2.5
• Description: Linear Voltage Regulator IC
• Manufacturer: National Semiconductor

Specifications of LP2981AIM5-2.5

• Primary Input Voltage: 16V
• Dropout Voltage Vdo: 200mV
• No. Of Pins: 5
• Output Current: 100mA
• Operating Temperature Range: -40°C To +125°C
• Termination Type: SMD
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Electrical Characteristics
Limits in standard typeface are for T
less otherwise specified: V
Symbol
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, or pins 5 and 2 for the micro SMD package, is 1 kV.
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, T
the ambient temperature, T
The value of θ
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 LP2981 output must be diode-clamped to ground.
Note 5: The output PNP structure contains a diode between the V
will turn on this diode (see Application Hints).
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 curves.
Note 10: Exposing the micro SMD device to direct sunlight will cause misoperation. See Application Hints for additional information.
Basic Application Circuit
*ON/OFF input must be actively terminated. Tie to V
**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.
JA
for the SOT-23 package is 220˚C/W and the micro SMD package is 225˚C/W. Exceeding the maximum allowable power dissipation will cause
Parameter
A
. The maximum allowable power dissipation at any ambient temperature is calculated using:
IN
= V
O(NOM)
J
= 25˚C, and limits in boldface type applyover the full operating temperature range. Un-
(Note 9)
+ 1V, C
IN
(Note 10) (Continued)
if this function is not to be used.
Conditions
IN
= 1 µF, I
IN
and V
L
OUT
= 1 mA, C
terminals that is normally reverse-biased. Reversing the polarity from V
5
Typ
OUT
= 4.7 µF,V
Min
LP2981AI-XX
J(MAX)
(Note 6)
, the junction-to-ambient thermal resistance, θ
ON/OFF
Max
= 2V.
01250604
Min
LP2981I-XX
(Note 6)
Max
www.national.com
IN
to V
JA
Units
, and
OUT