SC1402ISSTR 데이터 시트보기 (PDF) - Semtech Corporation
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SC1402ISSTR
Semtech Corporation
SC1402ISSTR Datasheet PDF : 18 Pages
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Multi-Output, Low-Noise Power Supply
Controller for Notebook Computers
SC1402
December 15, 2000
ELECTRICAL CHARACTERISTICS (continued)
(Unless otherwise noted: (V+ = 15V, both PWMs on, SYNC = VL, VL load = 0mA, REF load = 0mA, PSAVE = 0V, TA = -40 to +85°C
Typical values are at TA = +25°C).
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
FAULT DETECTION
Overvoltage Trip Threshold
With respect to unloaded output voltage
3.5
7
10
%
Overvoltage-Fault
CSL_ driven 2% above overvoltage trip threshold
1.5
µs
Propagation Delay
Output Undervoltage
Threshold
With respect to unloaded output voltage
60
70 80
%
Output Undervoltage
Lockout Time
From each SMPS enabled, with respect to fOSC 5000 6144 7000 clks
Thermal Shutdown
Threshold
Typical hysteresis = +10°C
150
°C
RESET
RESET Trip Threshold
RESET Propagation Delay
RESET Delay Time
With respect to unloaded output voltage, falling -10
-7
-4
%
edge; typical hysteresis = 1%
Falling edge, CSL_ driven 2% below RESET trip
1.5
µs
threshold
With respect to fOSC
27,000 32,000 37,000 clks
INPUTS AND OUTPUTS
Logic Input Low Voltage
Logic Input High Voltage
Input Leakage Current
Logic Output Low Voltage
Logic Output High Current
TIME/ON5 Input Trip Level
TIME/ON5 Source Current
TIME/ON5 On-Resistance
Gate Driver Sink/Source
Current
Gate Driver On-Resistance
RUN/ON3, PSAVE, TIME/ON5 (SEQ = REF),
SHDN, SYNC
RUN/ON3, PSAVE, TIME/ON5 (SEQ = REF),
SHDN, SYNC
RUN/ON3, PSAVE, TIME/ON5 (SEQ = REF),
SHDN, SYNC, SEQ = 0V or 3.3V
RESET, ISINK = 4mA
RESET = 3.5V
SEQ = 0 or VL
TIME/ON5 = 0V, SEQ = 0 or VL
TIME/ON5, RUN/ON3 = 0V, SEQ = 0 or VL
DL3, DH3, DL5, DH5, forced to 2V
High or low
0.6
V
2.4
V
+1
µA
0.4
V
1
mA
2.4
2.6
V
2
3
4
µA
100
Ω
1
A
1.5
7
Ω
Note 1: This device is ESD sensitive. Use of standard ESD handling precautions is required.
Note 2: Guaranteed by design.
© 2000 SEMTECH CORP.
4
652 MITCHELL ROAD NEWBURY PARK CA 91320
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