MC34704 FREESCALE [Freescale Semiconductor, Inc], MC34704 Datasheet - Page 7

• Manufacturer Part Number: MC34704
• Description: Multiple Channel DC-DC Power Management IC
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Table 2. 34704 Pin Definitions (continued)
Analog Integrated Circuit Device Data
Freescale Semiconductor
Pin Number Device Pin Name Pin Function
Exposed
A functional description of each pin can be found in the Functional Pin Description section beginning on
Pad
46
47
48
49
50
51
52
53
54
55
56
A/B
A/B
A/B
A/B
A/B
A/B
A/B
A/B
A/B
A/B
A/B
A/B
COMP5
VOUT2
VOUT5
PVIN2
SW2D
SW2U
SW5U
SW5D
PVIN5
PGND
BT5D
FB5
Input/Output
Input/Output
Input/Output
Input/Output
Passive
Passive
Ground
Output
Output
Power
Power
Input
REG2 power supply input
voltage
REG2 Buck Stage
switching node
REG2 regulated output
voltage pin
REG2 Boost Stage
switching node
REG5 Boost Stage
switching node
REG5 regulated output
voltage pin
REG5 Buck Stage
switching node
REG5 power supply input
voltage
REG5 Buck Stage
bootstrap capacitor input
pin
REG5 voltage feedback
input for voltage
regulation/programming
REG5 compensation
network connection
Power Ground
Connection for all of the
regulators except REG7
Formal Name
This is the connection to the drain of the high side switch FET.
Input decoupling /filtering is required for proper REG2 operation.
The inductor is connected between this pin and the SW2U pin.
Connect this pin to the load and to the output filter as close to
the pin as possible.
The inductor is connected between this pin and the SW2D pin.
The inductor is connected between this pin and the SW5D pin.
Connect this pin to the load and to the output filter as close to
the pin as possible.
The inductor is connected between this pin and the SW5U pin.
This is the connection to the drain of the high side switch FET.
Input decoupling /filtering is required for proper REG5 operation.
Connect a 1 F capacitor between this pin and SW5D pin to
enhance the gate of the Switch Power MOSFET.
Connect the feedback resistor divider to this pin.
REG5 compensation network connection.
Power Ground Connection for all of the regulators except
REG7. This pad is provided to enhance thermal performance.
Definition
page
PIN CONNECTIONS
17.
34704
7