LP3984IMF-1.8/NOPB National Semiconductor, LP3984IMF-1.8/NOPB Datasheet - Page 5

• Manufacturer Part Number: LP3984IMF-1.8/NOPB
• Description: IC REG LDO 150MA 1.8V SOT23-5
• Manufacturer: National Semiconductor

Specifications of LP3984IMF-1.8/NOPB

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.8V
• Voltage - Input: 2.5 ~ 6 V
• Number Of Regulators: 1
• Current - Output: 150mA
• Current - Limit (min): 300mA
• 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
• Voltage - Dropout (typical): -
• Other names: LP3984IMF-1.8; LP3984IMF-1.8TR

V
V
C
TSD
IL
IH
OUT
Electrical Characteristics
Unless otherwise specified: V
1 µF, I
appearing in boldface type apply over the entire junction temperature range for operation, −40˚C to +125˚C. (Note 7) (Note 8)
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device
is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical
Characteristics tables.
Note 2: All voltages are with respect to the potential at the GND pin.
Note 3: Additional information on pad temperature can be found in National Semiconductor Application Note (AN-1112).
Note 4: The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using the formula: P
where T
appearing under Absolute Maximum Ratings results from substituting the Absolute Maximum junction temperature, 150˚C, for T
More power can be dissipated safely at ambient temperatures below 70˚C . Less power can be dissipated safely at ambient temperatures above 70˚C. The Absolute
Maximum power dissipation for SOT23-5 can be increased by 4.5mW for each degree below 70˚C, and it must be derated by 4.5mW for each degree above 70˚C.
Note 5: The human body model is 100pF discharged through 1.5kΩ resistor into each pin. The machine model is a 200 pF capacitor discharged directly into each
pin.
Note 6: Like the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 250mW rating for
SOT23-5 appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125˚C, for T
θ
The maximum power dissipation for operation can be increased by 4.5mW for each degree below 70˚C, and it must be derated by 4.5mW for each degree above
70˚C.
Note 7: All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with T
Statistical Quality Control (SQC) methods. All hot and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations
and applying statistical process control.
Note 8: The target output voltage, which is labeled V
Note 9: An increase in the load current results in a slight decrease in the output voltage and vice versa.
Note 10: Dropout voltage is the input-to-output voltage difference at which the output voltage is 100mV below its nominal value. This specification does not apply
for input voltages below 2.5V.
Note 11: Turn-on time is time measured between the enable input just exceeding V
Symbol
JA
into (Note 4) above. More power can be dissipated at ambient temperatures below 70˚C . Less power can be dissipated at ambient temperatures above 70˚C.
OUT
J
is the junction temperature, T
= 1mA, C
Maximum Low Level Input
Voltage at EN
Minimum High Level Input
Voltage at EN
Output Capacitor
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
OUT
Parameter
= 1 µF, tantalum. Typical values and limits appearing in standard typeface are for T
IN
A
= 2.5V for 1.5, 1.8, & 2.0V options, V
is the ambient temperature, and θ
FIGURE 1. Line Transient Input Test Signal
OUT(nom)
(Continued)
V
V
Capacitance
ESR
IN
IN
, is the desired voltage option.
= 2.5 to 6.0V
= 2.5 to 6.0V
Conditions
JA
5
is the junction-to-ambient thermal resistance. The 364mW rating for SOT23-5
IH
and the output voltage just reaching 95% of its nominal value.
IN
= V
OUT
20020408
+ 0.5 for output options higher than 2.5V, C
Typ
160
20
J
, 70˚C for T
Min
1.4
1
2
J
, 70˚C for T
J
D
Limit
= 25˚C or correlated using
= (T
A
J
J
, and 220˚C/W for θ
- T
Max
= 25˚C. Limits
0.4
22
10
A
A
, and 220˚C/W for
)/θ
www.national.com
JA
,
Units
µF
˚C
˚C
V
V
Ω
IN
JA
.
=