SC1545CSTR 查看數據表（PDF） - Semtech Corporation
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SC1545CSTR Datasheet PDF : 8 Pages
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500mA SmartLDOTM With Power Up
Signal Sequencing
SC1545
PRELIMINARY - January 17, 2000
ABSOLUTE MAXIMUM RATINGS
Parameter
12V Input Voltage Range
5V Input Voltage Range
P-channel MOSFET Gate Drive
N-channel MOSFET Gate Drive
Input Pins
Operating Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 Sec
Thermal Impedance Junction to Case
Thermal Impedance Junction to Ambient(1)
ESD Rating
Note:
(1) 2 inch square of 1/16” FR-4, double sided, 1 oz. minimum copper weight.
Symbol
12VIN
5VSTBY
PDR
NDR
TA
TJ
TSTG
TLEAD
θJC
θJA
ESD
Maximum
-0.3 to +15
-0.3 to +7
-0.3 to 5VSTBY
-0.3 to 12VIN
-0.3 to +7
0 to +70
0 to +125
-65 to +150
300
47
65
2
Units
V
V
V
V
V
°C
°C
°C
°C
°C/W
°C/W
kV
ELECTRICAL CHARACTERISTICS
Unless specified, 12VIN = 12V, 5VSTBY = 5V, CO = 100µF min., TA = 25°C. Values in bold apply over full operating temperature range.
Parameter
Symbol
Test Conditions
MIN TYP MAX Units
12VIN
Supply Voltage
12VIN
11.28 12.00 12.72 V
Quiescent Current
IQ12
800 1000 µA
1200
5VSTBY
Supply Voltage
5VSTBY
4.7 5.0 5.3 V
Quiescent Current
IQ5
LDO ON
9.5 11
12 mA
LDO OFF
3.0 4.0
5.0
Undervoltage Lockout (5V)
UVLO Threshold
UVLO
5VSTBY rising
4.1 4.3 4.5 V
5VSTBY falling
3.9 4.1 4.3 V
Hysteresis
HYST
200
mV
Logic Reset Threshold
RST
1.5 2.0 2.5 V
© 2000 SEMTECH CORP.
2
652 MITCHELL ROAD NEWBURY PARK CA 91320
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