SC1403 Datasheet, PDF (2/30 Pages) Semtech Corporation – Mobile Multi-Output PWM Controller with Virtual Current SenseTM

SC1403
POWER MANAGEMENT
PRELIMINARY
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters
specified in the Electrical Characteristics section is not implied.
Parameter
Symbol
Maximum
Units
Supply Voltage, V+ to GND
Boost Voltages, BST3, BST5, to GND
V_IN
-0.3 to +30
V
-0.3 to +36
V
PGND to GND
± 0.3
V
BST3 to PHASE3; BST5 to PHASE5;
CSL5, CSH5 to GND; CSL3, CSH3 to GND
-0.3 to +6 DC
V
-2.0 to +7 Transient , 100nS
REF, SYNC, SEQ, PSAVE#, ON5, RESET#, VL, FB3,
FB5, COMP3, COMP5 to GND
-0.3V to +6
V
ON3, SHDN# to GND
-0.3V to (V+ + 0.3V)
V
VL, REF Short to GND
Continuous
REF Current
+5
mA
VL Current
+50
mA
Lead Temperature (Soldering) 10 seconds
Storage Temperature Range
Junction Temperature Range
Electrical Characteristics
T_LEAD
+300
°C
T_STG
-65 to +200
°C
T_J
+150
°C
Unless otherwise noted: V+ = 15V, both PWMs on, SYNC = 0V, VL load = 0mA, REF load = 0mA, PSAVE# = 0V, T_A =-40 to 85°C. Typical values are at
T_A = +25°C. Circuit = Typical Application Circuit
Parameter
Conditions
Min Typ Max Units
MAIN SMPS CONTROLLERS
Input Voltage Range
3.3V Output Voltage in
Adjustable Mode
3.3V Output Voltage in
Fixed Mode
5V Output Voltage in
Adjustable Mode
5V Output Voltage in
Fixed Mode
Output Voltage Adjust Range
Adjustable Mode Threshold
Voltage
Load Regulation
Line Regulation
V+ = 6.0 to 30V, CSL3 tied to FB3,
3V Load = 0A to current limit
V+ = 6.0 to 30V, FB3 = 0V,
3V Load = 0A to current limit
V+ = 6.0 to 30V, CSL5 tied to FB5,
5V Load = 0A to current limit
V+ = 6.0 to 30V, FB5 = 0V,
5V Load = 0A to current limit
Either SMPS
Either SMPS, 0A to current limit
Either SMPS, 6.0V < V+ <30; PSAVE# = V_L
6.0
30.0
V
2.45 2.5 2.55
V
3.23 3.3 3.37
V
2.45 2.5 2.55
V
4.9 5.0 5.1
V
REF
5.5
V
0.5 0.8 1.1
V
-0.4
%
0.05
%/V
 2002 Semtech Corp.
2
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