SC1404(2003) 데이터 시트보기 (PDF) - Semtech Corporation
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SC1404 Datasheet PDF : 27 Pages
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SC1404
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
DESCRIPTION
MAXIMUM
UNITS
VDD, V+, PHASE3, PHASE5 to GND
Supply and Phase Voltages
-0.3 to +30
V
PHASE3, PHASE5 to GND
Phase Voltages
-2.0 (transient - 100 nsec)
V
BST3, BST5, DH3, DH5 to GND
Boost voltages
-0.3 to +36
V
PGND to GND
Power Ground to Signal Ground
± 0.3
V
VL to GND
Logic Supply
-0.3 to +6
V
BST3 to PHASE3; BST5 to PHASE5;
High-side Gate Drive Supply
-0.3 to +6
V
DH3 to PHASE3; DH5 to PHASE5
High-side Gate Drive Outputs
-0.3 to (+BSTx + 0.3)
V
DL3, DL5 to GND
CSL5, CSH5, CSL3, CSH3 to GND
Low-side Gate Drive Outputs
-0.3 to +(VL + 0.3)
V
and Current Sense inputs
REF, SYNC, SEQ, PSAVE#, ON5, RESET#,
VL, FB3, FB5, COMP3, COMP5 to GND
Logic inputs/outputs
-0.3 to +(VL + 0.3)
V
ON3, SHDN# to GND
-0.3 to +(V+ + 0.3V)
V
VL, REF Short to GND
Continuous
REF Current
+5
mA
VL Current
+50
mA
12OUT to GND
-0.3 to (+VDD + 0.3)
V
12OUT Short to GND
Continuous
12OUT Current
12V output current
+200
mA
TJ
Package Thermal Resistance
Junction Temperature Range
junction to ambient
+150
76
°C
°C/Watt
TS
Storage Temperature Range
-65 to +200
TL
Lead Temperature
+300 °C, 10 second max.
Electrical Characteristics
Unless otherwise noted: V+ = 15V, both PWMs on, SYNC = 0V, VL load = 0mA, REF load = 0mA, PSAVE# = 0V, TA =-40 to 85°C.
Typical values are at TA = +25°C. Circuit = Typical Application Circuit
PARAMETER
CODE
CONDITIONS
MIN TYP MAX
°C
°C
UNITS
MAIN SMPS CONTROLLERS
Input Voltage Range
VIN
6
30.0
V
3V Output Voltage
V3OUT
V+ = 6.0 to 30V, 3V load = 0A to current limit 3.23 3.3 3.37
V
5V Output Voltage
V5OUT
V+ = 6.0 to 30V, 5V load = 0A to current limit 4.9 5.0 5.1
V
Load Regulation
V3LDRG Either SMPS, 0A to current limit, PSAVE# = VL
-0.4
%
V5LDRG
Line Regulation
2003 Semtech Corp.
V3LIRG
V5LIRG
Either SMPS, 6.0 < V+ < 30V, PSAVE# = VL
2
0.05
%/V
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