LP38513 Datasheet, PDF (4/14 Pages) National Semiconductor (TI) – 3A Fast Response Ultra Low Dropout Linear Regulator

Symbol
ERROR Flag
Parameter
Conditions
Min
Typ
Max
Units
V_TH
ERROR Flag Threshold
(Note 9)
V_OUT falling from V_OUT(NOM) until
ERROR Flag goes low
77
85
94
ΔV_TH
ERROR Flag Threshold
Hysteresis
(Note 9)
V_OUT rising from V_TH until ERROR
2.2
Flag goes high
4
5.8
%
V_ERROR(SAT)
ERROR Flag Saturation
Voltage
I_SINK = 1 mA
-
20
100
mV
I_lk
ERROR Flag Pin Leakage
Current
V_ERROR = 5.5V
-
100
-
nA
t_d
ERROR Flag Delay time
AC Parameters
-
1
-
µs
PSRR Ripple Rejection
V_IN = 2.5V
f = 120Hz
V_IN = 2.5V
f = 1 kHz
-
73
-
dB
-
70
-
ρ_n(l/f)
Output Noise Density
e_n
Output Noise Voltage
Thermal Characteristics
f = 120Hz
BW = 100Hz – 100kHz
V_OUT = 1.8V
-
0.8
-
µV/√Hz
-
45
-
µV_RMS
T_SD
ΔT_SD
θ_J-A
Thermal Shutdown
T_J rising
Thermal Shutdown Hysteresis T_J falling from T_SD
Thermal Resistance
TO-220 (Note 4)
Junction to Ambient
TO-263 (Note 4)
-
165
-
°C
-
10
-
-
60
-
°C/W
-
60
-
Thermal Resistance
θ_J-C
Junction to Case
TO-220
TO-263
-
3
-
°C/W
-
3
-
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. Test method is per JESD22-A114.
Note 3: Refer to JEDEC J-STD-020C for surface mount device (SMD) package reflow profiles and conditions. Unless otherwise stated, the temperatures and
times are for Sn-Pb (STD) only.
Note 4: Device operation 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).
Note 5: 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 6: Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in the load current at the output.
Note 7: The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the output
voltage tolerance specification.
Note 8: Dropout voltage (V_DO) is typically defined as the input to output voltage differential (V_IN - V_OUT) where the input voltage is low enough to cause the output
voltage to drop 2% from the nominal value. For the LP38513, the minimum operating voltage of 2.25V is the limiting factor and the maximum dropout voltage is
defined as: V_DO(MAX) = V_IN(MIN) - V_OUT(MIN) = (i.e. 2.25V - (1.80V x 95.9%) = 524 mV)
Note 9: The ERROR Flag thresholds are specified as percentage of the nominal regulated output voltage. See Application Information.
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