LP38513 Datasheet, PDF (5/25 Pages) National Semiconductor (TI) – 3A Fast Response Ultra Low Dropout Linear Regulator

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LP38513
SNVS361E – JULY 2007 – REVISED NOVEMBER 2015
6.5 Electrical Characteristics
Unless otherwise specified: V_IN = 2.5 V, I_OUT = 10 mA, C_IN = 10 µF, C_OUT = 10 µF, V_EN = 2 V, and limits apply for T_J = 25°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.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_OUT
Output voltage tolerance⁽¹⁾
ΔV_OUT/ΔV_IN
Output voltage line
regulation ^{(1) (2)}
ΔV_OUT/ΔI_OUT
Output voltage load
regulation ^{(1) (3)}
V_DO
Dropout voltage⁽⁴⁾
Ground pin current, output
enabled
I_GND
Ground pin current, output
disabled
I_SC
Short-circuit current
ENABLE INPUT
2.25 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 3 A
2.25 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 3 A
T_J = –40°C to +125°C
2.25V ≤ V_IN ≤ 5.5V
10 mA ≤ I_OUT ≤ 3A
0°C ≤ T_J ≤ 125°C
2.25 V ≤ V_IN ≤ 5.5 V
2.25 V ≤ V_IN ≤ 5.5 V
T_J = –40°C to +125°C
10 mA ≤ I_OUT ≤ 3 A
10 mA ≤ I_OUT ≤ 3 A
T_J = –40°C to +125°C
I_OUT = 3 A, T_J = –40°C to +125°C
I_OUT = 10 mA, ERROR pin = GND
I_OUT = 10 mA, ERROR pin = GND
T_J = –40°C to +125°C
I_OUT = 3 A, ERROR pin = GND
I_OUT = 3 A, ERROR pin = GND
T_J = –40°C to +125°C
V_EN = 0.5 V, ERROR pin = GND
V_EN = 0.5 V, ERROR pin = GND
T_J = –40°C to +125°C
V_OUT = 0 V
–1.6%
–4.1%
–2.6%
0%
1.6%
2.6%
0%
2.6%
0.03
%/V
0.06
0.1
%/A
0.2
425
mV
10
12
15
mA
12
15
20
60
100
µA
110
5.6
A
V_EN(TH)
t_d(OFF)
t_d(ON)
I_EN
Enable on/off threshold
Turnoff delay
Turnon delay
EN pin current
V_EN rising from 0 V until the output
turns to an ON state, or V_EN falling
from ≥ 2 V until the output turns to an
OFF state
V_EN rising from 0 V until the output
turns to an ON state, or V_EN falling
from ≥ 2 V until the output turns to an
OFF state
T_J = –40°C to +125°C
Time from V_EN < V_EN(TH) to V_OUT =
OFF, I_LOAD = 3 A
Time from V_EN >V_EN(TH) to V_OUT = ON,
I_LOAD = 3 A
V_EN = V_IN
V_EN = 0 V
0.74
0.85
0.92
V
0.56
1
5
µs
5
1
nA
–1
(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) 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.
(3) 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.
(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% from the nominal value. For the LP38513, the minimum operating voltage of 2.25 V is the limiting
factor, and the maximum dropout voltage is defined as: V_DO(MAX) = V_IN(MIN) – V_OUT(MIN) = (2.25 V – (1.8 V × 95.9%) = 524 mV).
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