PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER, DUAL LOW DROPOUT
REGULATOR CONTROLLER
August 25, 1998
SC1182/3
ABSOLUTE MAXIMUM RATINGS
Parameter
V
CC
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
V
IN
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
T
A
T
J
T
STG
T
L
θ
JA
θ
JC
ELECTRICAL CHARACTERISTICS
Unless specified: V
CC
= 4.75V to 5.25V; GND = P
GND
= 0V; V
OSENSE
= V
O
; 0mV < (CSp-CSm) < 60mV; LDOV = 11.4V to 12.6V; T
A
= 25°C
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
Peak DH Sink/Source Current
Peak DL Sink/Source Current
Output Voltage Tempco
Gain (A
OL
)
OVP threshold voltage
OVP source current
Power good threshold voltage
Dead time
Linear Sections
Quiescent current
Output Voltage (LDO1 SC1182)
Output Voltage (LDO2 SC1182)
Reference Voltage (SC1183)
Feedback Pin Bias Current (SC1183)
Gain (A
OL
)
Load Regulation
Line Regulation
Output Impedance
Notes:
(1) See Output Voltage table.
(2) In application circuit.
© 1998 SEMTECH CORP.
CONDITIONS
I
O
= 2A
V
CC
V
CC
= 5.0
I
O
= 0.8A to 15A
MIN
TYP
MAX UNITS
BSTH-DH = 4.5V, DH-PGNDH = 2V
BSTL-DL = 4.5V, DL-PGNDL = 2V
V
OSENSE
to V
O
V
OVP
= 3.0V
See Note 1.
4.2
7
8
15
1
0.5
4.2
60
70
80
180
200
220
90
95
1
1
30
100
35
120
10
88
112
50
100
5
2.475 2.500 2.525
1.485 1.500 1.515
1.252 1.265 1.278
10
90
0.3
0.3
200
V
mA
%
%
V
mV
kHz
%
A
A
o
ppm/ C
dB
%
mA
%
ns
mA
V
V
V
uA
dB
%
%
Ω
2
LDOV = 12V
LDOS (1,2) to GATE (1,2)
(2)
I
O
= 0 to 8A
652 MITCHELL ROAD NEWBURY PARK CA 91320
SEMTECH [ SEMTECH CORPORATION ]
