SC1185A(2005) 查看數據表（PDF） - Semtech Corporation
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SC1185A Datasheet PDF : 14 Pages
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SC1185 & SC1185A
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified
in the Electrical Characteristics section is not implied. Exposure to Absolute Maximum rated conditions for extended periods of time may affect device
reliability.
Parameter
Symbol
Maximum
Units
VCC to GND
PGND to GND
VIN
-0.3 to +7
V
+1
V
BST to GND
-0.3 to +15
V
Operating Temperature Range
Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 Sec.
Thermal Impedance Junction to Ambient
Thermal Impedance Junction to Case
TA
0 to +70
°C
TJ
0 to +125
°C
TSTG
-65 to +150
°C
TL
300
°C
θJA
80
°C/W
θJC
25
°C/W
Electrical Characteristics
Unless specified: VCC = 4.75V to 5.25V; GND = PGND = 0V; VOSENSE = VO; 0mV < (CS+-CS-) < 60mV; LDOV = 11.4V to 12.6V; TA = 0 to 70°C
Parameter
Conditions
Min
Typ
Max
Units
Switching Section
Output Voltage
Supply Voltage
IO = 2A in Application Circuit
VCC
See Output Voltage Table
4.5
7
V
Supply Current
VCC = 5.0V
8
15
mA
Load Regulation
Line Regulation
IO = 0.8A to 15A
1
%
+0.15
%
Current Limit Voltage
60
70
85
mV
Oscillator Frequency
125
140
160
kHz
Oscillator Max Duty Cycle
90
95
%
Peak DH Sink/Source Current BSTH - DH = 4.5V, DH - PGNDH = 3.1V
1
A
DH - PGNDH = 1.5v
100
mA
Peak DL Sink/Source Current BSTL - DL = 4.5V, DL - PGNDL = 3.1V
1
A
DL - PGNDL = 1.5V
100
mA
Gain (AOL)
VID Source Current
VOSENSE to VO
VIDx < 2.4V
35
dB
1
10
µA
VID Leakage
VIDx < 2.4V
10
µA
Power good threshold voltage
88
100
112
%
Dead time
40
100
ns
2005 Semtech Corp.
2
www.semtech.com
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