SC1185 Semtech Corporation, SC1185 Datasheet - Page 2

• Manufacturer Part Number: SC1185
• Description: PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER/ DUAL 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
Current Limit Voltage
Oscillator Frequency
Oscillator Max Duty Cycle
Peak DH Sink/Source Current
Peak DL Sink/Source Current
Gain (A
VID Source Current
VID Leakage
Power good threshold voltage
Dead time
Linear Sections
Quiescent current
Output Voltage LDO1
Output Voltage LDO2
Reference Voltage
Gain (A
Load Regulation
Line Regulation
Output Impedance
Gate Pulldown Impedance
VOSENSE Impedance
PRELIMINARY - January 6, 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
© 1999 SEMTECH CORP.
OL
OL
)
)
CC
= 4.75V to 5.25V; GND = P
GND
= 0V; V
PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER, DUAL LOW DROPOUT
REGULATOR CONTROLLER
CONDITIONS
I
VCC
VCC = 5.0V
I
BSTH-DH = 4.5V, DH-PGNDH = 3.1V
BSTL-DL = 4.5V, DL-PGNDL = 3.1V
VOSENSE to V
VIDx
VIDx = 5V
LDOV = 12V
Iref
LDOS (1,2) to GATE (1,2)
I
V
GATE(1,2)-AGND;VCC=LDOV=0V
O
O
O
GATE
= 0 to 8A
= 2A in Application Circuit
= 0.8A to 15A
OSENSE
= 6.5V
100µA
2.4V
= V
O
; 0mV < (CS+-CS-) < 60mV; LDOV = 11.4V to 12.6V; T
O
652 MITCHELL ROAD NEWBURY PARK CA 91320
DH-PGNDH = 1.5V
DL-PGNDL = 1.5V
Symbol
T
V
T
T
T
STG
JC
JA
IN
A
L
J
2.469 2.500 2.531
1.481 1.500 1.519
1.246 1.265 1.284
MIN
125
100
100
4.5
60
90
88
40
80
10
See Output Voltage Table
1
1
1
-65 to +150
-0.3 to +15
Maximum
±0.15
-0.3 to +7
0 to +125
TYP
0 to +70
140
100
300
70
95
35
10
90
8
1
1
300
± 1
80
25
MAX UNITS
750
160
112
SC1185A
0.3
0.3
1.5
15
85
10
A
7
5
= 0 to 70°C
SC1185
Units
°C/W
°C/W
°C
°C
°C
°C
kHz
mA
mV
mA
mA
mA
V
V
V
k
k
k
dB
µA
µA
dB
ns
%
%
%
%
%
%
V
A
A
V
V
V
2