LP38511 Datasheet, PDF (4/16 Pages) Texas Instruments – 800 mA Fast-Transient Response Low-Dropout Linear Voltage Regulator with Error Flag

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Peak Reflow Temperature (Note
3)
PSOP-8
TO-263
ESD Rating (Note 2)
Power Dissipation(Note 4)
Input Pin Voltage (Survival)
Enable Pin Voltage (Survival)
Output Pin Voltage (Survival)
ERROR Pin Voltage (Survival)
I_OUT(Survival)
−65°C to +150°C
260°C, 30s
260°C, 30s
±2 kV
Internally Limited
−0.3V to +6.0V
−0.3V to +6.0V
−0.3V to +6.0V
0.3V to +6.0V
Internally Limited
Operating Ratings (Note 1)
Input Supply Voltage, V_IN
Enable Input Voltage, V_EN
ERROR Pin Voltage
Output Current (DC)
Junction Temperature (Note 4)
2.25V to 5.5V
0.0V to 5.5V
0.0V to V_IN
0 mA to 800 mA
−40°C to +125°C
Electrical Characteristics
Unless otherwise specified: V_IN = 2.5V, I_OUT = 10 mA, C_IN = 10 µF, C_OUT = 10 µF, V_EN = V_IN. 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 guaranteed 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_OUT
ΔV_OUT/ΔV_IN
Output Voltage Tolerance
(Note 7)
Output Voltage Line
Regulation
(Notes 5, 7)
2.25V ≤ V_IN ≤ 5.5V
10 mA ≤ I_OUT ≤ 800 mA
2.25V ≤ V_IN ≤ 5.5V
-1.0
−2.5
0
+1.0
+2.5
%
-
0.02
0.06
-
%/V
Output Voltage Load
ΔV_OUT/ΔI_OUT Regulation
(Notes 6, 7)
10 mA ≤ I_OUT ≤ 800 mA
-
0.25
0.40
-
%/A
V_DO
Dropout Voltage
(Note 8)
I_OUT = 800 mA
-
135
225
mV
260
Ground Pin Current, Output
I_OUT = 10 mA
ERROR pin = GND
I_GND
Enabled
I_OUT = 800 mA
ERROR pin = GND
-
7.5
11
12
mA
-
9.5
13
14
Ground Pin Current, Output V_EN = 0.50V
Disabled
ERROR pin = GND
-
0.1
3.5
µA
12
I_SC
Short Circuit Current
Enable Input
V_OUT = 0V
-
1.5
-
A
V_EN(ON)
Enable ON Threshold
V_EN rising from 0.50V until
V_OUT = ON
0.90
1.20
1.50
V
0.80
1.60
V_EN(OFF) Enable OFF Threshold
V_EN falling from 1.60V until
V_OUT = OFF
0.60
0.50
1.00
1.40
1.50
V
V_EN(HYS) Enable Hysteresis
V_EN(ON) - V_EN(OFF)
-
200
-
mV
t_d(OFF)
t_d(ON)
Turn-off delay
Turn-on delay
Time from V_EN < V_EN(OFF) to V_OUT =
-
1
-
OFF, I_LOAD = 1.5A
µs
Time from V_EN >V_EN(ON) to V_OUT =
ON, I_LOAD = 800 mA
-
25
-
I_EN
Enable Pin Current
V_EN = V_IN
V_EN = 0V
-
1
-
nA
-
-1
-
3
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