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34704 Datasheet(PDF) 47 Page - Freescale Semiconductor, Inc

Part # 34704
Description  Multiple Channel DC-DC Power Management IC
PDF  54 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

34704 Datasheet(HTML) 47 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
47
34704
FUNCTIONAL DEVICE OPERATION
COMPONENT CALCULATION
The passive components associated to these frequencies are calculated with the following formulas.
On the 34704 VRAMP is half of 1.2 V since each operation mode spends only half the ramp.
C1
Vinmin
VRAMP
------------------
1
D
min
2
----------------



1
2
 F
POR1

-----------------------------


=
C2
1
2
 F
Z2R1

----------------------------


=
R2
1
2
 F
Z1C1

----------------------------


=
R3
1
2
 F
P1C2

----------------------------


=
C3
1
2
 F
P2R2

----------------------------


=



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