AP34063(2018) 查看數據表（PDF） - Diodes Incorporated.
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AP34063 Datasheet PDF : 11 Pages
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Design Formula Table
NOT RECOMMENDED FOR NEW DESIGN
USE AZ34063U
AP34063
Calculation
tON / tOFF
( tON + tOFF )
tOFF
tON
CT
IPK (Switch)
RSC
L (MIN)
CO
Step-Up
VOUT + VF –VIN(MIN)
VIN(MIN) – VSAT
1/f
tON + tOFF
tON
+1
tOFF
( tON +tOFF ) – tOFF
4.0 10-5tON
2IOUT(MAX) (tON / tOFF +1)
0.3 / IPK (SWITCH)
( VIN(MIN) – VSAT )
IPK (SWITCH)
tON(MAX)
9
IOUT tON
VRIPPLE (pp)
VSAT = Saturation voltage of the output switch.
VF = Forward voltage drop of the output rectifier.
Step-Down
VOUT + VF
VIN(MIN) – VSAT – vOUT
1/f
tON + tOFF
tON
+1
tOFF
( tON +tOFF ) – tOFF
4.0 10-5tON
2IOUT(MAX)
0.3 / IPK (SWITCH)
(VIN(MIN) – VSAT – VOUT)
tON(MAX)
IPK (SWITCH)
IPK (SWITCH) (tON + tOFF)
8VRIPPLE (pp)
Voltage-Inverting
I VOUT l + VF
VIN(MIN) – VSAT
1/f
tON + tOFF
tON
+1
tOFF
( tON +tOFF ) – tOFF
4.0 10-5tON
2IOUT(MAX) (tON / tOFF +1)
0.3 / IPK (SWITCH)
( VIN(MIN) – VSAT )
IPK (SWITCH)
tON(MAX)
9
IOUT tON
VRIPPLE (pp)
The following power supply characteristics must be chosen:
VIN - Nominal input voltage.
VOUT - Desired output voltage, |VOUT| = 1.25 (1+R2/R1)
IOUT - Desired output current.
FMIN - Minimum desired output switching frequency at the selected values of VIN and IO.
VRIPPLE(pp) - Desired peak-to-peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its
equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the line and
load regulation.
Ordering Information
AP34063 XX X - X
Package
S8 : SO-8
Green
G : Green
Packing
13 : Tape & Reel
Device
Package Code
AP34063S8G-13
S8
Package
(Note 7)
SO-8
Green
Green
Quantity
2500
Part Number Suffix
Tube
13” Tape and
Reel
NA
-13
Status
(Note 6)
In production
Notes:
6. All Lead-free versions in SO-8 and PDIP-8 are End of Life (EOL) with no replacement.
7. For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes-packaging/.
AP34063
Document number: DS31004 Rev. 8 - 3
8 of 11
www.diodes.com
June 2018
© Diodes Incorporated
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