DUAL INPUT
LOW DROPOUT REGULATOR
EZ1580/EZ1581
EZ1582/EZ1583
February 26, 1999
ELECTRICAL CHARACTERISTICS
(1)
Test Conditions
Test Limits
Typ
Parameter
Symbol
VCNTL
Volts
VPWR
Volts
Amps
TJ(6)
25°C
O.T.
Min
Max
1.257
1.263
Units
Reference Voltage
VREF
2.75
2.00
0.01
1.243
1.237
1.250
1.250
EZ1583
EZ1582
EZ1581
EZ1580
0.01 - 1.5
0.01 - 3.0
0.01 - 5.0
0.01 - 7.0
2.7 - 12
2.05 - 5.5
V
Line Regulation
REG(LINE)
2.5 - 12
1.75 - 5.5
0.01
O.T.
1.0
3.0
mV
Load Regulation
EZ1583
0.01 - 1.5
0.01 - 3.0
0.01 - 5.0
0.01 - 7.0
EZ1582
EZ1581
EZ1580
REG(LOAD)
2.75
5
2.1
3.3
O.T.
O.T.
O.T.
1.0
5.0
5.0
10
mV
mA
mA
Minimum Load Current (2)
IO
Control Pin Current (3)
EZ1583
1.5
3.0
5.0
7.0
6.0
30
33
60
EZ1582
EZ1581
EZ1580
IC
2.75
2.05
120
Adjust Pin Current
IADJ
2.75
2.75
2.05
2.05
0.01
O.T.
O.T.
50
120
µA
A
Current Limit
EZ1583
1.6
3.1
5.1
7.1
EZ1582
EZ1581
EZ1580
ICL
Ripple Rejection (4)
EZ1583
0.75
1.5
2.5
3.5
EZ1582
EZ1581
EZ1580
RA
3.75
3.75
2.05
25°C
60
80
dB
Thermal Regulation (5)
REG(THERMAL)
0.002
0.02
%/W
Dropout Voltage (7)
Minimum VCNTL
EZ1583
1.5
3.0
5.0
7.0
1.00
1.05
1.10
1.15
1.15
1.18
1.25
1.30
EZ1582
EZ1581
EZ1580
VC-VO
O.T.
V
Dropout Voltage (7)
Minimum VPOWER
EZ1583
EZ1582
EZ1581
EZ1580
1.5
3.0
5.0
7.0
25°C
O.T.
0.40
0.50
0.50
0.60
VP-VO
2.75
25°C
O.T.
0.40
0.50
0.50
0.60
V
25°C
O.T.
0.40
0.50
0.50
0.60
25°C
O.T.
0.54
0.70
0.62
0.80
(1) Unless otherwise specified, VOUT = VSENSE, VADJ = 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.
NOTES
(4) VC = VP = 3.75V Avg; VRIPPLE = 1VPK-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 ]
