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MC34063A View Datasheet(PDF) - Texas Instruments

Part NameMC34063A TI
Texas Instruments TI
Description1.5-A Peak Boost/Buck/Inverting Switching Regulators
MC34063A Datasheet PDF : 30 Pages
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MC33063A, MC34063A
SLLS636N – DECEMBER 2004 – REVISED JANUARY 2015
9.2.2.2 Detailed Design Procedure
CALCULATION
ton/toff
(ton + toff)
toff
ton
CT
Ipk(switch)
RSC
L(min)
CO
Vout
STEP UP
Vout + VF-Vin(min)
Vin(min) - Vsat
1
f
ton + toff
ton
toff
+1
(ton + toff )- toff
4 ´10-5 ton
2Iout(max )
æ
ç
è
ton
toff
+
ö
1÷
ø
0.3
Ipk(switch)
( ) æ
ç
ççè
Vin(min) - Vsat
Ipk(switch)
ö
÷
÷÷ø
ton(max
)
9 Iout ton
Vripple(pp)
1.25
æ
çè1
+
R2
R1
ö
÷ø
See Figure 10
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9.2.2.3 Application Performance
TEST
Line regulation
Load regulation
Output ripple
Efficiency
Output ripple with optional filter
CONDITIONS
VIN = 8 V to 16 V, IO = 175 mA
VIN = 12 V, IO = 75 mA to 175 mA
VIN = 12 V, IO = 175 mA
VIN = 12 V, IO = 175 mA
VIN = 12 V, IO = 175 mA
RESULTS
30 mV ± 0.05%
10 mV ± 0.017%
400 mVPP
87.7%
40 mVPP
14
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