DUAL INPUT
LOW DROPOUT REGULATOR
February 26, 1999
EZ1580/EZ1581
EZ1582/EZ1583
ELECTRICAL CHARACTERISTICS
Test Conditions
Parameter
Reference Voltage
EZ1583
EZ1582
EZ1581
EZ1580
Line Regulation
Load Regulation
EZ1583
EZ1582
EZ1581
EZ1580
Minimum Load Current
(2)
Control Pin Current
(3)
EZ1583
EZ1582
EZ1581
EZ1580
Adjust Pin Current
Current Limit
EZ1583
EZ1582
EZ1581
EZ1580
Ripple Rejection
(4)
EZ1583
EZ1582
EZ1581
EZ1580
Thermal Regulation
(5)
Dropout Voltage
(7)
Minimum V
CNTL
EZ1583
EZ1582
EZ1581
EZ1580
Dropout Voltage
(7)
Minimum V
POWER
EZ1583
EZ1582
EZ1581
EZ1580
V
P
-V
O
2.75
1.5
3.0
5.0
7.0
25°C
O.T.
25°C
O.T.
25°C
O.T.
25°C
O.T.
0.40
0.50
0.40
0.50
0.40
0.50
0.54
0.70
0.50
0.60
0.50
0.60
0.50
0.60
0.62
0.80
V
REG
(LINE)
Symbol
V
REF
V
CNTL
Volts
2.75
2.7 - 12
V
PWR
Volts
2.00
2.05 - 5.5
(1)
Test Limits
T
J
(6)
Amps
0.01
0.01 - 1.5
0.01 - 3.0
0.01 - 5.0
0.01 - 7.0
0.01
0.01 - 1.5
0.01 - 3.0
0.01 - 5.0
0.01 - 7.0
Min
1.243
1.237
Typ
1.250
1.250
Max
1.257
1.263
Units
25°C
O.T.
V
2.5 - 12
1.75 - 5.5
O.T.
1.0
3.0
mV
REG
(LOAD)
2.75
2.1
O.T.
1.0
5.0
mV
I
O
5
3.3
1.5
3.0
5.0
7.0
0.01
O.T.
5.0
6.0
30
33
60
50
1.6
3.1
5.1
7.1
10
mA
I
C
2.75
2.05
O.T.
120
mA
I
ADJ
2.75
2.05
O.T.
120
µA
I
CL
2.75
2.05
O.T.
A
R
A
3.75
3.75
0.75
1.5
2.5
3.5
25°C
60
80
dB
REG
(THERMAL)
0.002
0.02
%/W
V
C
-V
O
2.05
1.5
3.0
5.0
7.0
O.T.
1.00
1.05
1.10
1.15
1.15
1.18
1.25
1.30
V
NOTES
(1) Unless otherwise specified, V
OUT
= V
SENSE
, V
ADJ
= 0V.
(2) Required to maintain regulation. Voltage set resistors R1, R2 are usually utilized for minimum load current.
(3) Current used to drive the output section; minimum value equals the standby current of the device.
(4) V
C
= V
P
= 3.75V Avg; V
RIPPLE
= 1V
PK-PK
.
(5) 30ms.
(6) Over Temp (O.T.) = over specified operating junction temperature range.
(7) Minimum input/output voltage required to maintain 1% regulation.
3
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
SEMTECH [ SEMTECH CORPORATION ]
