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SC1185ACSW 数据表(PDF) 2 Page - Semtech Corporation

部件名 SC1185ACSW
功能描述  PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER
PDF  12 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC1185ACSW 数据表(HTML) 2 Page - Semtech Corporation

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PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER, DUAL LOW DROPOUT
REGULATOR CONTROLLER
© 1999 SEMTECH CORP.
PRELIMINARY - January 6, 1999
652 MITCHELL ROAD NEWBURY PARK CA 91320
SC1185
SC1185A
2
Parameter
Symbol
Maximum
Units
VCC to GND
V
IN
-0.3 to +7
V
PGND to GND
± 1
V
BST to GND
-0.3 to +15
V
Operating Temperature Range
T
A
0 to +70
°C
Junction Temperature Range
T
J
0 to +125
°C
Storage Temperature Range
T
STG
-65 to +150
°C
Lead Temperature (Soldering) 10 seconds
T
L
300
°C
Thermal Impedance Junction to Ambient
θ
JA
80
°C/W
Thermal Impedance Junction to Case
θ
JC
25
°C/W
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
Unless specified: V
CC = 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
I
O = 2A in Application Circuit
See Output Voltage Table
Supply Voltage
VCC
4.5
7
V
Supply Current
VCC = 5.0V
8
15
mA
Load Regulation
I
O = 0.8A to 15A
1
%
Line Regulation
±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
DH-PGNDH = 1.5V
1
100
A
mA
Peak DL Sink/Source Current
BSTL-DL = 4.5V, DL-PGNDL = 3.1V
DL-PGNDL = 1.5V
1
100
A
mA
Gain (A
OL)
VOSENSE to V
O
35
dB
VID Source Current
VIDx
≤ 2.4V
110
µA
VID Leakage
VIDx = 5V
10
µA
Power good threshold voltage
88
112
%
Dead time
40
100
ns
Linear Sections
Quiescent current
LDOV = 12V
5
mA
Output Voltage LDO1
2.469 2.500 2.531
V
Output Voltage LDO2
1.481 1.500 1.519
V
Reference Voltage
Iref
≤ 100µA
1.246 1.265 1.284
V
Gain (A
OL)
LDOS (1,2) to GATE (1,2)
90
dB
Load Regulation
I
O = 0 to 8A
0.3
%
Line Regulation
0.3
%
Output Impedance
V
GATE = 6.5V
1
1.5
k
Ω
Gate Pulldown Impedance
GATE(1,2)-AGND;VCC=LDOV=0V
80
300
750
k
Ω
VOSENSE Impedance
10
k
Ω



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