LP3992IMF-1.5 National Semiconductor, LP3992IMF-1.5 Datasheet - Page 4

• Manufacturer Part Number: LP3992IMF-1.5
• Description: IC, V REG 30MA, SHUTDOWN, SMD, 3992
• Manufacturer: National Semiconductor

Specifications of LP3992IMF-1.5

• Primary Input Voltage: 2.5V
• Output Voltage: 1.5V
• Dropout Voltage Vdo: 400mV
• No. Of Pins: 5
• Output Current: 30mA
• Voltage Regulator Case Style: SOT-23
• Operating Temperature Range: -40°C To +125°C
• Output Voltage Fixed: 1.5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

www.national.com
C
o
Electrical Characteristics
Note 3: The package can pass MSL (moisture sensitivity level) 1 at 260˚C.
Additional information on lead temperature can be obtained from National Semiconductor web pages
http://www.national.com/packaging/general.html
http://www.national.com/packaging/plastic.html
Note 4: The Maximum power dissipation of the device is dependant on the maximum allowable junction temperature for the device and the ambient temperature.
This relationship is given by the formula
P
Where T
the device related to the operational conditions can be calculated using the formula
P
Substituting the device values gives the max power dissipation = (5.2V - 1.5V)(0.03) = 0.111W. This figure for Maximum power dissipation can be used to derive the
maximum ambient temperature. For the SOT23-5 package θ
220). This gives the maximum ambient temperature for operation as 100.6˚C, (125 - 24.4). Similarly the numbers for the absolute maximum case can be derived
using a figure of 150˚C for the junction temperature.
Note 5: The human body is 100pF discharge through 1.5kW resistor into each pin. The machine model is a 200 pF capacitor discharged directly into each pin.
Note 6: The device maintains the regulated output voltage without the load.
Note 7: This electrical specification is guaranteed by design.
Note 8: Time for V
Note 9: Time from V
Note 10: Time for V
Note 11: Time from V
Note 12: Short circuit current is measured on the input supply line at the point when the short circuit condition reduces the output voltage to 95% of its nominal value.
Note 13: All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production at T
Statistical Quality Control methods. Operation over the temperature specification is guaranteed by correlating the electrical characteristics to process and
temperature variations and applying statistical process control.
Output Capacitor, Recommended Specifications
Note 14: Capacitor types recommended are X7R, Y5V, and Z5U. X7R tolerance is quoted as 15% over temperature.
Symbol
D
D
= (T
= (V
J
IN(MAX)
J
- T
is the junction temperature, T
A
)/θ
Output Capacitor
- V
JA
OUT(MAX)
OUT
OUT
SD
SD
to rise from 50 to 85% of V
= 1.15V to V
to fall from 85 to 50% of V
= 0.4V to V
) * (I
Parameter
OUT(MAX)
OUT
OUT
A
is the ambient temperature, and θJA is the junction-to-ambient thermal resistance. The Maximum Power dissipation across
)
= 5%(V
= 95%(V
OUT(nom)
FIGURE 1. Figure 1. T
OUT(nom)
OUT(nom)
OUT(nom)
(Continued)
. (figure 1)
). (figure 1)
Capacitance(Note 14)
ESR
. (figure 1)
. (figure 1)
JA
= 220˚C/W, thus for this device the maximum temperature difference, (T
Conditions
4
on
/T
off
Timing Diagram
Typ
Min
1.0
20041203
5
J
Limit
= 25˚C or correlated using
J
- T
A
Max
500
), is 24.4˚C, (0.111 *
Units
mΩ
µF