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| SI-8033JD Datasheet, PDF (3/10 Pages) Allegro MicroSystems – Step-Down to 3.3 V, 1.5 A, DC/DC Converter | |||
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SwRitecghuinlagtors
SI-8033JD
Step-Down
to 3.3 V, 1.5 A,
DC/DC Converter
ELECTRICAL CHARACTERISTICS at TA = +25°C, VI = 15 V, IO = 0.5 A (unless otherwise noted).
Limits
Characteristic
Symbol Test Conditions
Min. Typ. Max. Units
Output Voltage
VO
Ref. Volt. Temp. Coeff.
aVref
Output Short-Circuit Current IOM
Efficiency
η
Operating Frequency
f
Line Regulation
Load Regulation
Quiescent Current
âVO(âVI)
âVO(âIO)
IIQ
Chip Enable Voltage
VCE
Soft-Start Current
ISS
See note
VI = 8 V ~ 30 V, IO = 0.5 A
VI = 15 V, IO = 0.2 A ~ 0.8 A
IO = 0 A
VCE = 0.3 V
Converter turn-off voltage
VSS = 0 V
3.234
â
1.6
â
â
â
â
â
â
â
â
3.30 3.366
±0.5 â
ââ
77 â
125 â
25 80
10 30
7.0 â
â 200
â 0.5
â -100
V
mV/°C
A
%
kHz
mV
mV
mA
µA
V
µA
Typical values are given for circuit design information only.
Note: Output short-circuit current is at point where output voltage has decreased 5% below VO(nom).
SI-8033JD
Test Circuit
C1 = 220 µF/50 V
C2 = 470 µF/25 V
C3 = 0.47 µF/10 V
L1 = 100 µH
D1 = Sanken SFPB-66
www.allegromicro.com
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