LP38841-ADJ Datasheet, PDF (3/10 Pages) National Semiconductor (TI) – 0.8A Ultra Low Dropout Adjustable Linear Regulators Stable with Ceramic Output Capacitors

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
Lead Temp. (Soldering, 5 seconds)
ESD Rating
Human Body Model (Note 3)
Machine Model (Note 9)
Power Dissipation (Note 2)
V_IN Supply Voltage (Survival)
V_BIAS Supply Voltage (Survival)
Shutdown Input Voltage (Survival)
V_ADJ
−65°C to +150°C
260°C
2 kV
200V
Internally Limited
−0.3V to +6V
−0.3V to +7V
−0.3V to +7V
-0.3V to +6V
I_OUT (Survival)
Output Voltage (Survival)
Junction Temperature
Operating Ratings
V_IN Supply Voltage
Shutdown Input Voltage
I_OUT
Operating Junction
Temperature Range
V_BIAS Supply Voltage
V_OUT
Internally Limited
−0.3V to +6V
−40°C to +150°C
(V_OUT + V_DO) to 5.5V
0 to +5.5V
0.8A
−40°C to +125°C
4.5V to 5.5V
0.56V to 1.5V
Electrical Characteristics Limits in standard typeface are for T_J = 25°C, and limits in boldface type apply over
the full operating temperature range. Unless otherwise specified: V_IN = V_O(NOM) + 1V, V_BIAS = 4.5V, I_L = 10 mA,
C_IN = 10 µF CER, C_OUT = 22 µF CER, V_S/D = V_BIAS. Min/Max limits are guaranteed through testing, statistical correlation, or design.
TYP
Symbol
Parameter
Conditions
MIN (Note MAX
Units
4)
V_ADJ
I_ADJ
ΔV_O/ΔV_IN
Adjust Pin Voltage
Adjust Pin Bias Current
Output Voltage Line Regulation
(Note 6)
10 mA < I_L < 0.8A
V_O(NOM) + 1V ≤ V_IN ≤ 5.5V
4.5V ≤ V_BIAS ≤ 5.5V
10 mA < I_L < 0.8A
V_O(NOM) + 1V ≤ V_IN ≤ 5.5V
4.5V ≤ V_BIAS ≤ 5.5V
V_O(NOM) + 1V ≤ V_IN ≤ 5.5V
0.552 0.56 0.568
0.543
0.577
V
1
µA
0.01
%/V
ΔV_O/ΔI_L
Output Voltage Load Regulation 10 mA < I_L < 0.8A
(Note 7)
0.1
0.4
1.3
%/A
V_DO
Dropout Voltage (Note 8)
I_L = 0.8A
75
120
205
mV
I_Q(V_IN)
Quiescent Current Drawn from
V_IN Supply
10 mA < I_L < 0.8A
V _S/D ≤ 0.3V
30
35
mA
40
0.06
1
µA
30
I_Q(V_BIAS)
Quiescent Current Drawn from
V_BIAS Supply
10 mA < I_L < 0.8A
V _S/D ≤ 0.3V
4
2
mA
6
0.03
1
30
µA
UVLO
V_BIAS Voltage Where Regulator
Output Is Enabled
3.8
V
I_SC
Short-Circuit Current
Shutdown Input
V_OUT = 0V
2.6
A
V_SDT
Output Turn-off Threshold
Output = ON
Output = OFF
0.7 1.3
V
0.3
0.7
Td (OFF)
Td (ON)
I_S/D
θ_J-A
Turn-OFF Delay
Turn-ON Delay
S/D Input Current
Junction to Ambient Thermal
Resistance
R_LOAD X C_OUT << Td (OFF)
R_LOAD X C_OUT << Td (ON)
V _S/D =1.3V
V _S/D ≤ 0.3V
PSOP-8 Package (Note 10)
20
µs
15
1
µA
−1
43
°C/W
AC Parameters
3
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