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| LP38511TJ-ADJ Datasheet, PDF (4/21 Pages) Texas Instruments – LP38511-ADJ 800mA Fast-Transient Response Adjustable Low-Dropout Linear Voltage Regulator | |||
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LP38511-ADJ
SNVS545D â JANUARY 2009 â REVISED APRIL 2013
www.ti.com
Electrical Characteristics (continued)
Unless otherwise specified: VIN= 2.50V, VOUT= VADJ, IOUT= 10 mA, CIN= 10 µF, COUT= 10 µF, VEN= 2.0V. Limits in standard
type are for TJ= 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C to +125°C.
Minimum and Maximum limits are ensured through test, design, or statistical correlation. Typical values represent the most
likely parametric norm at TJ= 25°C, and are provided for reference purposes only.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
IGND
Ground Pin Current, Output
Enabled
IOUT = 10 mA
IOUT = 800 mA
-
7.5
11
12
mA
-
9
11
13
Ground Pin Current, Output
Disabled
VEN = 0.50V
-
0.1
3.5
12
µA
ISC
Short Circuit Current
Enable Input
VOUT = 0V
-
1.5
-
A
VEN(ON)
Enable ON Voltage Threshold
VEN rising from <0.5V until VOUT =
ON
0.90
0.80
1.20
1.50
1.60
V
VEN(OFF)
Enable OFF Voltage Threshold
VEN falling from 1.6V until VOUT =
OFF
0.60
0.50
1.00
1.40
1.50
V
VEN(HYS) Enable Voltage Hysteresis
VEN(ON) - VEN(OFF)
-
200
-
mV
IEN
Enable Pin Current
VEN = VIN
VEN = 0V
-
1
-
nA
-
-1
-
td(OFF)
td(ON)
Turn-off delay
Turn-on delay
Time from VEN < VEN(OFF) to VOUT =
OFF, ILOAD = 800 mA
-
1
-
µs
Time from VEN >VEN(ON) to VOUT =
ON, ILOAD = 800 mA
-
25
-
AC Parameters
PSRR
Ripple Rejection
VIN = 2.5V
f = 120Hz
VIN = 2.5V
f = 1 kHz
-
73
-
dB
-
70
-
Ïn(l/f)
Output Noise Density
en
Output Noise Voltage
Thermal Characteristics
f = 120Hz
BW = 10Hz - 100kHz
-
0.4
-
µV/âHz
-
25
-
µVRMS
TSD
ÎTSD
θJ-A
Thermal Shutdown
Thermal Shutdown Hysteresis
Thermal Resistance
Junction to Ambient(5)
TJ rising
TJ falling from TSD
SO PowerPad
PFM
-
165
-
°C
-
10
-
-
168
-
°C/W
-
67
-
θJ-C
Thermal Resistance
Junction to Case
SO PowerPad
PFM
-
11
-
°C/W
-
2
-
(5) Device operation must be evaluated, and derated as needed, based on ambient temperature (TA), power dissipation (PD), maximum
allowable operating junction temperature (TJ(MAX)), and package thermal resistance (θJA). The typical θJA ratings given are 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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Product Folder Links: LP38511-ADJ
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