SC431L Просмотр технического описания (PDF) - Semtech Corporation
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SC431L Datasheet PDF : 10 Pages
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SC431L
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified:TA = 25°C. Values in bold apply over full operating ambient temperature range.
(Continued from page 2)
SC431L 0.25%
Parameter
Symbol
Condition
Min Typ Max
Dynamic Output
Impedance
Minimum Operating
Current
rZ
IZ (MIN)
IZ
f < 1kHz,
= 100µA
tVoZ1=00VmREAF (1)
VZ
=
V (1)
REF
0.05 0.15
20 100
SC431L 0.5%
Min Typ Max Units
0.05 0.15 Ω
20 100 µA
SC431L 1%
SC431L 2%
Parameter
Symbol
Condition
Min Typ Max Min Typ Max Units
Reference Voltage
VREF
VZ = VREF, IZ = 10mA(1)
1.228 1.240 1.252 1.215 1.240 1.265 V
1.215
1.265 1.200
1.280
VREF Temp Deviation
Ratio of Change in
VREF to Change in VZ
Reference Input
Current
IDREeFvTiaetmiopnerature
VDEV
∆VREF
∆VZ
IREF
IREF(DEV)
VZ = VREF, IZ = 10mA(1)
IZ = 10mA, ∆VZ = 16V to VREF
R1 = 10kΩ, R2 = ∞,
IZ = 10mA(2)
R1 = 10kΩ, R2 = ∞,
IZ = 10mA(2)
10 25
-1.0 -2.7
0.15 0.5
0.1 0.4
10 35 mV
-1.0 -2.7 mV/V
0.15 0.5 µA
0.1 0.4 µA
Off-State Cathode
Current
Dynamic Output
Impedance
Minimum Operating
Current
IZ (OFF)
rZ
IZ (MIN)
VREF = 0V, VZ = 6V(3)
VREF = 0V, VZ = 16V(3)
IZ
f < 1kHz,
= 100µA
tVoZ1=00VmREAF (1)
VZ
=
V (1)
REF
0.125 0.150
0.135 0.150
0.05 0.15
20 100
0.125 0.150 µA
0.135 0.150
0.05 0.15 Ω
20 100 µA
Notes:
(1) See Test Circuit 1 on page 4.
(2) See Test Circuit 2 on page 4.
(3) See Test Circuit 3 on page 4.
Recommended Operating Conditions
Cathode Voltage, VZ
Cathode Current, IZ
Min Max
VREF
16
100µA 100
Symbol
V
mA
2008 Semtech Corp.
3
www.semtech.com
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