SC1173 データシートの表示（PDF） - Semtech Corporation
部品番号
コンポーネント説明
一致するリスト
SC1173
Semtech Corporation
SC1173 Datasheet PDF : 12 Pages
| |||
PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER WITH LOW DROPOUT
REGULATOR CONTROLLER
SC1172/3
October 25, 1999
ABSOLUTE MAXIMUM RATINGS
Parameter
VCC to GND
PGND to GND
BST to GND
Operating Temperature Range
Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 seconds
Thermal Impedance Junction to Ambient
Thermal Impedance Junction to Case
Symbol
VIN
TA
TJ
TSTG
TL
θJA
θJC
Maximum
-0.3 to +7
±1
-0.3 to +15
0 to +70
0 to +125
-65 to +150
300
80
25
Units
V
V
V
°C
°C
°C
°C
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
Unless specified: VCC = 4.75V to 5.25V; GND = PGND = 0V; VOSENSE = VO; 0mV < (CSp-CSm) < 60mV; LDOV = 11.4V to 12.6V; TA = 25oC
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Switching Section
Output Voltage
Supply Voltage
Supply Current
Load Regulation
Line Regulation
IO = 2A
VCC
VCC = 5.0
IO = 0.8A to 15A
See Note 1.
4.2
7
V
8 15 mA
1
%
0.5
%
Minimum operating voltage
4.2
V
Current Limit Voltage
60 70 80 mV
Oscillator Frequency
180 200 220 kHz
Oscillator Max Duty Cycle
90 95
%
DH Sink/Source Current
BSTH-DH = 4.5V, DH-PGNDH = 2V
1
A
DL Sink/Source Current
Output Voltage Tempco
BSTL-DL = 4.5V, DL-PGNDL = 2V
1
A
30 100 ppm/oC
Gain (AOL)
OVP threshold voltage
VOSENSE to VO
35
dB
120
%
OVP source current
Power good threshold voltage
VOVP = 3.0V
10
mA
88
112 %
Dead time
50 100
ns
Linear Section
Quiescent current
LDOV = 12V
5
mA
Output Voltage (SC1172)
1.485 1.500 1.515 V
Reference Voltage (SC1173)
1.252 1.265 1.278 V
Feedback Pin Bias Current (SC1173)
10 uA
Gain (AOL)
Load Regulation
Line Regulation
LDOS to GATE
IO = 0 to 8A(2)
90
dB
0.3 %
0.3 %
Output Impedance
200
Ω
Notes: (1) See Output Voltage table
(2) In application circuit
2
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
Share Link: