LP38500-ADJ Datasheet, PDF (4/23 Pages) National Semiconductor (TI) – 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs

LP38500-ADJ, LP38502-ADJ
SNVS539F – NOVEMBER 2007 – REVISED APRIL 2013
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Absolute Maximum Ratings⁽¹⁾⁽²⁾
Storage Temperature Range
−65°C to +150°C
Lead Temperature (Soldering, 5 sec.)
ESD Rating⁽³⁾
Power Dissipation⁽⁴⁾
260°C
±2 kV
Internally Limited
Input Pin Voltage (Survival)
−0.3V to +6.0V
Enable Pin Voltage (Survival)
−0.3V to +6.0V
Output Pin Voltage (Survival)
−0.3V to +6.0V
I_OUT (Survival)
Internally Limited
(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 ensure specific performance limits. For ensured specifications and conditions,
see the Electrical Characteristics.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Office/ Distributors for availability and
specifications.
(3) The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
(4) Operating junction temperature must be evaluated, and derated as needed, based on ambient temperature (T_A), power dissipation (P_D),
maximum allowable operating junction temperature (T_J(MAX)), and package thermal resistance (θ_JA). See Application Information.
Operating Ratings⁽¹⁾
Input Supply Voltage
2.7V to 5.5V
Enable Input Voltage
0.0V to 5.5V
Output Current (DC)
Junction Temperature⁽²⁾
0 to 1.5A
−40°C to +125°C
V_OUT
0.6V to 5V
(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 ensure specific performance limits. For ensured specifications and conditions,
see the Electrical Characteristics.
(2) Operating junction temperature must be evaluated, and derated as needed, based on ambient temperature (T_A), power dissipation (P_D),
maximum allowable operating junction temperature (T_J(MAX)), and package thermal resistance (θ_JA). See Application Information.
Electrical Characteristics
LP38500/2–ADJ
Unless otherwise specified: V_IN = 3.3V, I_OUT = 10 mA, C_IN = 10 µF, C_OUT = 10 µF, V_EN = V_IN, V_OUT = 1.8V. Limits in standard
type are for T_J = 25°C only; limits in boldface type apply over the junction temperature (T_J) range of -40°C to +125°C.
Minimum and Maximum limits are specified through test, design, or statistical correlation. Typical values represent the most
likely parametric norm at T_J = 25°C, and are provided for reference purposes only.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V_ADJ
V_ADJ
I_ADJ
V_DO
Adjust Pin Voltage⁽¹⁾
Adjust Pin Voltage⁽¹⁾
"A" GRADE
Adjust Pin Bias Current
Dropout Voltage⁽²⁾
2.7V ≤ V_IN ≤ 5.5V
10 mA ≤ I_OUT ≤ 1.5A
2.7V ≤ V_IN ≤ 5.5V
10 mA ≤ I_OUT ≤ 1.5A
2.7V ≤ V_IN ≤ 5.5V
I_OUT = 1.5A
0.584
0.575
0.605
0.626
0.635
V
0.596
0.587
0.605
0.614
0.623
V
50
750
nA
220
275
375
mV
ΔV_OUT/ΔV_IN
Output Voltage Line
Regulation ^{(1) (3)}
2.7V ≤ V_IN ≤ 5.5V
—
0.04
0.05
—
%/V
ΔV_OUT/ΔI_OUT
Output Voltage Load
Regulation ^{(1) (4)}
10 mA ≤ I_OUT ≤ 1.5A
—
0.18
0.33
—
%/A
I_GND
Ground Pin Current In Normal
Operation Mode
10 mA ≤ I_OUT ≤ 1.5A
—
2
3.5
4.5
mA
(1) 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.
(2) 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_IN operating voltage is the limiting factor.
(3) 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.
(4) Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in the load current.
4
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