MC34704AEP Freescale Semiconductor, MC34704AEP Datasheet - Page 47
MC34704AEP
Manufacturer Part Number
MC34704AEP
Description
IC POWER MANAGEMENT 56-QFN
Manufacturer
Freescale Semiconductor
Datasheet
1.MC34704BEPR2.pdf
(54 pages)
Specifications of MC34704AEP
Applications
Processor
Current - Supply
86mA
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-20°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
56-QFN
Output Voltage
5 V
Input Voltage
2.7 V to 5.5 V
Switching Frequency
750 KHz to 2 MHz
Mounting Style
SMD/SMT
Number Of Outputs
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Analog Integrated Circuit Device Data
Freescale Semiconductor
The passive components associated to these frequencies are calculated with the following formulas.
On the 34704 V
C1
C2
R2
R3
C3
=
=
=
=
=
⎛
⎝
⎛
⎝
⎛
⎝
⎛
⎝
------------------
V
Vin
----------------------------- -
2π F
----------------------------- -
2π F
----------------------------- -
2π F
----------------------------- -
2π F
RAMP
min
(
(
(
(
1
Z2
1
Z1
1
P1
1
P2
⎛
⎜
⎝
RAMP
---------------- -
D′
R1
C1
C2
R2
min
1
)
)
)
)
⎞
⎠
⎞
⎠
⎞
⎠
⎞
⎠
is half of 1.2 V since each operation mode spends only half the ramp.
2
⎞
⎟
⎠
⎛
⎝
------------------------------ -
2π F
(
PO
1
R1
)
⎞
⎠
FUNCTIONAL DEVICE OPERATION
COMPONENT CALCULATION
34704
47