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SC1565 Datasheet(PDF) 3 Page - Semtech Corporation

Part No. SC1565
Description  VERY LOW DROPOUT 1.5 AMP REGULATOR WITH ENABLE
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Maker  SEMTECH [Semtech Corporation]
Homepage  http://www.semtech.com
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SC1565 Datasheet(HTML) 3 Page - Semtech Corporation

 
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© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
VERY LOW DROPOUT 1.5 AMP
REGULATOR WITH ENABLE
SC1565
October 3, 2000
3
ELECTRICAL CHARACTERISTICS
Unless specified: V
EN = VIN
Adjustable Option (V
ADJ > VTH(ADJ)): VIN = 2.2 to 5.5V and IO = 10µA to 1.5A
Fixed Options (V
ADJ = GND): VIN = (VO + 0.7V) to 5.5V and IO = 0A to 1.5A
Values in bold apply over the full operating temperature range.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Dropout Voltage
(2)
V
D
I
LOAD = 10mA
2.5
10
mV
20
I
LOAD = 500mA
115
300
mV
400
I
LOAD = 1A
225
400
mV
500
I
LOAD = 1.5A
350
500
mV
600
Minimum Load Current
(3)
I
O
V
IN = VO + 0.7V
1
10
µA
Current Limit
I
CL
1.50
2.50
3.50
A
ADJ
Reference Voltage
(1)
V
REF
V
IN = 2.2V, VADJ = VOUT, IO = 10mA
1.188
1.200
1.212
V
1.176
1.224
Adjust Pin Current
(4)
I
ADJ
V
ADJ = VREF
10
50
nA
Adjust Pin Threshold
(5)
V
TH(ADJ)
0.10
0.20
0.40
V
EN
Enable Pin Current
I
EN
V
EN = 0V, VIN = 3.3V
1.5
10
µA
Enable Pin Threshold
V
IH
V
IN = 3.3V
1.8
V
V
IL
V
IN = 3.3V
0.4
OVER TEMPERATURE PROTECTION
High Trip level
T
HI
170
°C
Hysteresis
T
HYST
20
°C
NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) Defined as the input to output differential at which the output voltage drops to 1% below the value measured at
a differential of 0.7V.
(3) Required to maintain regulation. Voltage set resistors R1 and R2 are usually utilized to meet this requirement.
Adjustable versions only.
(4) Guaranteed by design.
(5) When V
ADJ exceeds this threshold, the “Sense Select” switch disconnects the internal feedback chain from the
error amplifier and connects V
ADJ instead.


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