PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER, DUAL LOW DROPOUT
REGULATOR CONTROLLER
PRELIMINARY - December 2, 1999
SC1186
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
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 < (CS+-CS-) < 60mV; LDOV = 11.4V to 12.6V; T
A
= 0 to 70°C
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
OL
)
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
OL
)
Load Regulation
Line Regulation
Output Impedance
CONDITIONS
I
O
= 2A in Application Circuit
VCC
VCC = 5.0V
I
O
= 0.8A to 15A
MIN
TYP
MAX
UNITS
BSTH-DH = 4.5V, DH-PGNDH = 3.3V
DH-PGNDH = 1.5V
BSTL-DL = 4.5V, DL-PGNDL = 3.3V
DL-PGNDL = 1.5V
VOSENSE to V
O
VIDx
≤
2.4V
VIDx = 5V
See Output Voltage Table
4.5
7
V
8
15
mA
1
%
±0.15
%
60
70
85
mV
120
140
160
kHz
90
95
%
1
A
100
mA
1
A
100
mA
1
88
40
35
10
10
112
100
dB
µA
µA
%
ns
mA
V
V
V
dB
%
%
kΩ
LDOV = 12V
Iref
≤
100µA
LDOS (1,2) to GATE (1,2)
I
O
= 0 to 8A
V
GATE
= 6.5V
5
2.493 2.525 2.556
1.496 1.515 1.534
1.246 1.265 1.284
90
0.3
0.3
1
1.5
2
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
SEMTECH [ SEMTECH CORPORATION ]
