LP38500ASD-ADJ NSC [National Semiconductor], LP38500ASD-ADJ Datasheet - Page 5

• Manufacturer Part Number: LP38500ASD-ADJ
• Description: 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs
• Manufacturer: NSC [National Semiconductor]

AC Parameters
Thermal Characteristics
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but does not guarantee specific performance limits. For guaranteed specifications and conditions, see the Electrical Characteristics.
Note 2: The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
Note 3: Operating junction temperature must be evaluated, and derated as needed, based on ambient temperature (T
allowable operating junction temperature (T
Note 4: Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the voltage at the input.
Note 5: Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in the load current.
Note 6: The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the adjust
voltage tolerance specification.
Note 7: Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. For any output
voltage less than 2.5V, the minimum V
Note 8: The value of θ
PCB copper dedicated to heat transfer (See Application Information).
Note 9: θ
Symbol
PSRR
ΔT
ρ
T
θ
θ
n(l/f)
e
J-A
J-C
SD
n
SD
JA
for the LLP-8 package was measured using the LP38502SD-ADJ evaluation board (See Application Information).
Ripple Rejection
Output Noise Density
Output Noise Voltage
Thermal Shutdown
Thermal Shutdown Hysteresis T
Thermal Resistance
Junction to Ambient
Thermal Resistance
Junction to Ambient
Thermal Resistance
Junction to Case
JA
for the TO-263 (TS) package and TO-263 THIN (TJ) package can range from approximately 30 to 60°C/W depending on the amount of
Parameter
IN
operating voltage is the limiting factor.
J(MAX)
), and package thermal resistance (θ
V
f = 120Hz
V
f = 1 kHz
f = 120Hz, C
BW = 100Hz – 100kHz
C
T
TO-263, TO-263 THIN(Note 8)
1 sq. in. copper
LLP-8 (Note 9)
TO-263, TO-263 THIN
LLP-8
J
J
IN
IN
OUT
rising
falling from T
= 3.0V, I
= 3.0V, I
= 10 µF CER
Conditions
OUT
OUT
OUT
SD
= 1.5A
= 1.5A
= 10 µF CER
5
JA
). See Application Information.
Min
—
—
—
—
—
—
—
—
—
—
A
), power dissipation (P
Typ
100
170
1.0
58
56
10
37
80
16
5
Max
—
—
—
—
—
—
—
—
—
—
D
), maximum
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µV (rms)
µV/
Units
°C/W
°C/W
dB
°C
√
Hz