LP38513-ADJ Datasheet, PDF (4/18 Pages) National Semiconductor (TI) – 3A Fast-Transient Response Adjustable Low-Dropout Linear Voltage Regulator

LP38513-ADJ
SNVS514C – JANUARY 2009 – REVISED APRIL 2013
www.ti.com
ELECTRICAL CHARACTERISTICS
Unless otherwise specified: V_IN= 2.50V, V_OUT = V_ADJ, I_OUT= 10 mA, C_IN= 10 µF, C_OUT= 10 µF, V_EN= 2.0V. 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
I_ADJ
ΔV_ADJ/ΔV_IN
V_ADJ Accuracy ⁽¹⁾
ADJ Pin Bias Current
V_ADJ Line Regulation ^{(2) (1)}
2.25V ≤ V_IN ≤ 5.5V
10 mA ≤ I_OUT ≤ 3A
2.25V ≤ V_IN ≤ 5.5V
2.25V ≤ V_IN ≤ 5.5V
495.0
490.0
500.
505.0
510.0
mV
-
1
-
nA
-
0.03
0.06
-
%/V
ΔV_ADJ/ΔI_OUT
V_DO
V_ADJ Load Regulation ^{(3) (1)}
Dropout Voltage ⁽⁴⁾
I_GND
Ground Pin Current, Output
Enabled
10 mA ≤ I_OUT ≤ 3A
I_OUT = 3A
I_OUT = 10 mA
I_OUT = 3A
-
0.15
0.20
-
%/A
-
-
470
mV
-
8
10
12
mA
-
12
14
16
Ground Pin Current, Output
Disabled
V_EN = 0.50V
-
1
5
10
µA
I_SC
Short Circuit Current
Enable Input
V_OUT = 0V
-
5.2
-
A
V_EN(ON)
V_EN(OFF)
V_EN(HYS)
I_EN
Enable ON Voltage Threshold
Enable OFF Voltage Threshold
Enable Voltage Hysteresis
Enable Pin Current
t_d(OFF)
Turn-off delay
t_d(ON)
Turn-on delay
AC Parameters
V_EN rising from <0.5V until
V_OUT = ON
V_EN falling from 1.6V until
V_OUT = OFF
V_EN(ON) - V_EN(OFF)
V_EN = V_IN
V_EN = 0V
Time from V_EN < V_EN(TH) to
V_OUT = OFF, I_LOAD = 3A
Time from V_EN >V_EN(TH) to
V_OUT = ON, I_LOAD = 3A
0.90
0.80
1.20
1.50
1.60
V
0.70
0.60
1.00
1.30
1.40
-
200
-
mV
-
1
-
nA
-
-1
-
-
5
-
µs
-
5
-
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 = 10Hz - 100kHz
-
0.4
-
µV/√Hz
-
25
-
µV_RMS
T_SD
ΔT_SD
θ_J-A
Thermal Shutdown
Thermal Shutdown Hysteresis
Thermal Resistance
Junction to Ambient ⁽⁵⁾
T_J rising
T_J falling from T_SD
TO-263 THIN
-
165
-
°C
-
10
-
-
67
-
°C/W
θ_J-C
Thermal Resistance
Junction to Case
TO-263 THIN
-
2
-
°C/W
(1) 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.
(2) Line regulation is defined as the change in V_ADJ from the nominal value due to change in the voltage at the input.
(3) Load regulation is defined as the change in V_ADJ from the nominal value due to change in the load current at the output.
(4) 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%. For the LP38513-ADJ, the minimum operating voltage of 2.25V is the limiting factor when the
programed output voltage is less than typically 1.80V.
(5) 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). The typical θ_JA rating given is worst case
based on minimum land area on two-layer PCB (EIA/JESD51-3). See POWER DISSIPATION/HEAT-SINKING for details.
4
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