LP38859_14 Datasheet, PDF (4/21 Pages) Texas Instruments – 3A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start

LP38859
SNVS337D – JUNE 2006 – REVISED OCTOBER 2011
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Electrical Characteristics (continued)
Unless otherwise specified: V_IN = V_OUT(NOM) + 1V, V_BIAS = 3.0V, I_OUT = 10 mA, C_IN = C_OUT = 10 µF, C_BIAS = 1 µF, C_SS = open.
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
AC Parameters
PSRR
(V_IN)
PSRR
(V_BIAS)
Ripple Rejection for V_IN Input
Voltage
Ripple Rejection for V_BIAS Voltage
V_IN = V_OUT(NOM) + 1V,
f = 120 Hz
V_IN = V_OUT(NOM) + 1V,
f = 1 kHz
V_BIAS = V_OUT(NOM) + 3V,
f = 120 Hz
V_BIAS = V_OUT(NOM) + 3V,
f = 1 kHz
-
80
-
-
65
-
dB
-
58
-
-
58
-
Output Noise Density
f = 120 Hz
-
1
-
µV/√Hz
e_n
Output Noise Voltage
V_OUT = 1.8V
BW = 10 Hz − 100 kHz
BW = 300 Hz − 300 kHz
-
150
-
µV (rms)
-
90
-
Thermal Parameters
T_SD
T_SD(HYS)
θ_J-A
θ_J-C
Thermal Shutdown Junction
Temperature
Thermal Shutdown Hysteresis
Thermal Resistance, Junction to
Ambient ⁽⁴⁾
Thermal Resistance, Junction to
Case ⁽⁴⁾
TO-220
DDPAK/TO-263
TO-220
DDPAK/TO-263
-
160
-
°C
-
10
-
-
60
-
-
60
-
°C/W
-
3
-
-
3
-
(4) Device power dissipation must be de-rated based on device power dissipation (P_D), ambient temperature (T_A), and package junction to
ambient thermal resistance (θ_JA). Additional heat-sinking may be required to ensure that the device junction temperature (T_J) does not
exceed the maximum operating rating. See the Application Information section for details.
4
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