SC1531 データシートの表示（PDF） - Semtech Corporation
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SC1531 Datasheet PDF : 11 Pages
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SC1531(A)
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: TA = 25°C, VIN = 5V, VAUX = 3.3V, IO = max. rated, CO = 4.7µF. Values in bold apply over full operating temperature range.
Parameter
Symbol
Test Conditions
Min
Typ
Max Units
5V Detect(1)(2)(3)
Low Threshold Voltage
Hysteresis
VTH(LO)
VHYST
VIN Falling
3.90 4.05 4.20 V
90
200
mV
80
High Threshold Voltage
VO
VTH(HI)
VIN Rising
4.30 V
LDO Output Voltage
Line Regulation
VO
REG(LINE)
IO = 20mA
4.3V £ VIN £ 5.5V, 0mA £ IO £ IO(MAX)
3.9V £ VIN £ 4.3V, VAUX = 3.3V,
0mA
£
IO
£
I (4)
O(MAX)
VIN = 4.3V to 5.5V
3.267 3.300 3.333 V
3.234
3.366
3.000
0.12 0.40 %
0.60
Load Regulation
REG(LOAD)
IO = 20mA to IO(MAX)
0.12 0.40 %
0.60
SENSE
SENSE Pin Impedance
DR
RSENSE
6.0
8.5
kW
Drive Voltage
VDR
4.3V £ VIN £ 5.5V, IDR = 200µA
3.4 VIN - 0.8
V
3.3
VIN < VTH(LO), IDR = -200µA
35
150 mV
200
Peak Drive Current
Drive High Delay(1)(5)
Drive Low Delay(1)(5)
See next page for Notes.
IDR(PK)
tDH
tDL
Sinking: VIN = 3.9V, VDR = 1V;
7
Sourcing: VIN = 4.3V, (VIN - VDR) = 2V
6
CDR = 1.2nF, VIN ramping up, measured
from VIN = VTH(HI) to VDR = 2V
CDR = 1.2nF, VIN ramping down, measured
from VIN = VTH(LO) to VDR = 2V
mA
0.5
1.0
µs
2.0
0.5
1.0
µs
2.0
ã 2000 Semtech Corp.
3
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