sc1173csw Semtech Corporation, sc1173csw Datasheet - Page 2

• Manufacturer Part Number: sc1173csw
• Description: Programmable Synchronous Dc/dc Converter With Low Dropout Regulator Controller
• Manufacturer: Semtech Corporation

ELECTRICAL CHARACTERISTICS
Unless specified: V
PARAMETER
Switching Section
Output Voltage
Supply Voltage
Supply Current
Load Regulation
Line Regulation
Minimum operating voltage
Current Limit Voltage
Oscillator Frequency
Oscillator Max Duty Cycle
DH Sink/Source Current
DL Sink/Source Current
Output Voltage Tempco
Gain (A
OVP threshold voltage
OVP source current
Power good threshold voltage
Dead time
Linear Section
Quiescent current
Output Voltage (SC1172)
Reference Voltage (SC1173)
Feedback Pin Bias Current (SC1173)
Gain (A
Load Regulation
Line Regulation
Output Impedance
October 25, 1999
ABSOLUTE MAXIMUM RATINGS
Parameter
V
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
Notes: (1) See Output Voltage table
© 1999 SEMTECH CORP.
CC
to GND
OL
OL
(2) In application circuit
)
)
CC
= 4.75V to 5.25V; GND = P
GND
= 0V; V
PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER WITH LOW DROPOUT
REGULATOR CONTROLLER
OSENSE
CONDITIONS
I
V
V
I
BSTH-DH = 4.5V, DH-PGNDH = 2V
BSTL-DL = 4.5V, DL-PGNDL = 2V
V
V
LDOV = 12V
LDOS to GATE
I
O
O
O
CC
CC
OSENSE
OVP
= 0.8A to 15A
= 0 to 8A
= 2A
= 5.0
= 3.0V
= V
O
to V
; 0mV < (CSp-CSm) < 60mV; LDOV = 11.4V to 12.6V; T
(2)
O
652 MITCHELL ROAD NEWBURY PARK CA 91320
Symbol
T
V
T
T
T
STG
JC
JA
IN
A
L
J
1.485 1.500 1.515
1.252 1.265 1.278
MIN
180
4.2
60
90
10
88
50
1
1
See Note 1.
-65 to +150
-0.3 to +15
Maximum
-0.3 to +7
0 to +125
TYP
0 to +70
200
120
100
200
0.5
70
95
30
35
90
8
1
300
± 1
80
25
MAX UNITS
SC1172/3
220
100
112
4.2
0.3
0.3
15
80
10
7
5
A
= 25
o
ppm/
Units
C
C/W
C/W
°C
°C
°C
°C
kHz
mA
mA
mA
mV
V
V
V
dB
uA
dB
ns
%
%
%
%
%
%
%
V
V
A
A
V
V
o
2
C