EZ1581(1999) 查看數據表（PDF） - Semtech Corporation
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EZ1581 Datasheet PDF : 5 Pages
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DUAL INPUT
LOW DROPOUT REGULATOR
EZ1580/EZ1581
EZ1582/EZ1583
February 26, 1999
ELECTRICAL CHARACTERISTICS
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 VCNTL
EZ1583
EZ1582
EZ1581
EZ1580
Dropout Voltage (7)
Minimum VPOWER
EZ1583
EZ1582
EZ1581
EZ1580
Symbol
VREF
VCNTL
Volts
2.75
2.7 - 12
REG(LINE)
2.5 - 12
REG(LOAD)
2.75
IO
5
IC
2.75
IADJ
2.75
ICL
2.75
RA
3.75
REG(THERMAL)
VC-VO
VP-VO
2.75
Test Conditions (1)
VPWR
Volts
2.00
2.05 - 5.5
1.75 - 5.5
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
2.1
0.01 - 3.0
0.01 - 5.0
0.01 - 7.0
3.3
1.5
2.05
3.0
5.0
7.0
2.05
0.01
2.05
0.75
3.75
1.5
2.5
3.5
1.5
2.05
3.0
5.0
7.0
1.5
3.0
5.0
7.0
TJ(6)
25°C
Test Limits
Min
Typ
Max
Units
1.243 1.250 1.257
O.T. 1.237 1.250 1.263 V
O.T.
1.0
3.0
mV
O.T.
1.0
5.0
mV
O.T.
O.T.
O.T.
1.6
O.T.
3.1
5.1
7.1
5.0
10
mA
6.0
30
120 mA
33
60
50
120
µA
A
25°C
60
80
dB
0.002 0.02 %/W
1.00 1.15
O.T.
1.05 1.18
V
1.10 1.25
1.15 1.30
25°C
O.T.
25°C
O.T.
25°C
O.T.
25°C
O.T.
0.40 0.50
0.50 0.60
0.40 0.50
V
0.50 0.60
0.40 0.50
0.50 0.60
0.54 0.62
0.70 0.80
NOTES (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.
(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
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