SC198 Semtech, SC198 Datasheet - Page 2

• Manufacturer Part Number: SC198
• Description: Dual DC-DC Buck Converter
• Manufacturer: Semtech

Exceeding the specifi cations below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specifi ed in the
Electrical Characteristics section is not recommended.
Note:
(1)
(2)
Unless otherwise noted: V
POWER MANAGEMENT
Absolute Maximum Ratings
Parameter
VIN
EN, SYNC Input
LXA and LXB Voltages
VOUT
CTLA0, CTLA1, CTLA2, CTLB0, CTLB1 & CTLB2 Voltages
Output Short Circuit to GND
LXA and LXB Currents
Thermal Impedance (Junction to Ambient)
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Refl ow Solder Temperature
ESD Protection Level
Electrical Characteristics
Parameter
Input Voltage Range
VOUT Accuracy
Line Regulation
Load Regulation
Minimum Duty Cycle
LXA, LXB Current Limit
Quiescent Current
Shutdown Current
LXA and LXB
Leakage Current
© 2007 Semtech Corp.
Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad as per JESD51 standards.
Tested according to JEDEC standard JESD22-A114-B.
(1)
(2)
IN
= 3.6V, SYNC = V
Symbol
V
I
V
LXA
∆V
DC
LOADREG
LINEREG
V
I
I
LIM
I
SD
, I
Q
OUT
IN
MIN
LXB
(1)
IN
, L = 4.7μH, C = 10μF, T
V
I
IN
OUT
= 2.7 to 5.5V, V
ENA, ENB = 0, LXA, LXB = Open
= 0mA, SYNC = 0, ENA, ENB = V
V
V
IN
IN
I
I
OUT
OUT
= 5.5V, LX = V
= 5.5V, LX = 0V, PMOS
= 10mA to 600mA
= 10mA to 600mA
Conditions
A
2
= -40°C to +85°C. Typical values are at T
OUT
= 1.8V, I
I
LXA
V
V
IN
Symbol
, NMOS
EN ,
LXA
V
T
V
and I
V
θ
t
T
T
T
PKG
V
, V
OUT
SC
ESD
JA
IN
A
S
J
OUT
SYNC
LXB
LXB
= 300mA
IN
-0.3 to V
-0.3 to V
-0.3 to V
Min
2.7
0.9
Maximum
-65 to +150
-3
-2
-1 to V
-40 to +85
Indefi nite
-0.3 to 7
150
260
1.2
40
2
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IN
IN
IN
IN
A
Typ
= 25°C.
0.1
0.1
0.1
+0.3
+1
+0.3
+0.3
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0.0008
Max
5.5
0.2
18
50
3
1
1
SC198
Units
ºC/W
°C
kV
ºC
ºC
ºC
Units
V
V
V
V
V
A
%/mA
s
%/V
μA
μA
μA
μA
%
%
V
A