EUP7981
Electrical Characteristics
Conditions: V
IN
=V
OUT
+0.5V or 2.5V whichever is greater,V
EN
=V
IN
,C
IN
=1uF,C
OUT
=1uF,T
A
=-40~85℃
,Unless otherwise specified.
Symbol
Parameter
Input Voltage
Conditions
I
OUT
=1mA,T
A
=25℃
I
OUT
=1mA,T
A
=-40℃ to 85℃
T
A
>0℃
V
OUT
=V
OUT
(nom)
×
90%, T
A
>0℃
I
OUT
=150mA
I
OUT
=1mA
V
IN
=(V
OUT
+0.5V) to 5.5V,
I
OUT
=1mA
1mA
≤
I
OUT
≤
150mA
V
EN
=0,T
A
=25℃
V
IN
=(V
OUT
+1V)DC+0.5V
P-P
f=1kHz, I
LOAD
=10mA
f=10Hz~100kHz, I
LOAD
=10mA
f=10Hz~100kHz, I
LOAD
=10mA
R
LOAD
=50Ω,T
A
=25℃
V
IN
=2.5V to 5.5V
V
IN
=2.5V to 5.5V
V
IN
=5.5V, V
EN
=0 or 5.5V
V
IN
=5.5V, V
FB
=1.3V
T
A
=25℃
EUP7981
Min
Typ
Max.
2.5
-2
-3
150
150
220
140
70
0.02
0.002
400
240
160
0.25
0.013
1
75
50
239
200
0.4
1.5
1
1
1.176
1.2
155
15
1.224
5.5
2
3
Unit
V
%
%
mA
mA
mV
µA
%/V
%/mA
µA
dB
µV
µV
µs
V
V
nA
nA
V
℃
℃
∆V
OUT
Output Voltage Accuracy
I
OUTMAX
Maximum Output Current
I
LIMIT
V
DROP
I
Q
V
LNR
V
LDR
I
SHDN
PSRR
Current Limit
Dropout Voltage (Note1)
Quiescent Current
Line Regulation
Load Regulation
Shutdown Supply Current
Power Supply Ripple Rejection
Output Noise Voltage (Bypass)
Output Noise Voltage (ADJ)
Turn-on Time (Note2)
V
ENL
V
ENH
VENL (Maximum Low Level
Input Voltage at EN)
VENH (Minimum high Level
Input Voltage at EN)
VEN Input Bias Current
FB Input Bias Current (ADJ
Version)
FB Pin Voltage (ADJ Version)
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
V
FB
T
SD
∆T
SD
Note 1: Dropout is defined as V
IN
-V
OUT
when V
OUT
is 100mV below the value of V
OUT
for V
IN
=V
OUT
+0.6V
Note 2: Test time needed for V
OUT
to reach 90% of final value.
DS7981
Ver1.0
Jan. 2008
4
EUTECH [ EUTECH MICROELECTRONICS INC ]
