MC34704 FREESCALE [Freescale Semiconductor, Inc], MC34704 Datasheet - Page 3

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

Analog Integrated Circuit Device Data
Freescale Semiconductor
COMP7
COMP5
VOUT6
VOUT5
VREF7
PVIN5
SW5D
SW5U
AGND
OUT8
OUT7
DRV7
BT5D
BT5U
VDDI
SW8
SW6
SDA
SCL
RST
BT8
FB8
FB7
BT6
FB6
FB5
VIN
REG6 (34704A)
I
Reset Driver
REG7 (34704A)
VDDI (2.5V) VDDIMON (VDDIdet)
2
REG8
C
PWM
VG
VG
VG
VG
VG
PWM
Amp
PWM
Registers
P-skip
Sequencer
Soft Start
PWM
L
INTERNAL BLOCK DIAGRAM
Figure 2. 34704 Internal Block Diagram
voltage data
L
voltage data
To Reg 1-8
Error Amp
Error Amp
Error Amp
voltage data
voltage data
Error Amp
Control
Control
Error Amp
Error Amp
Control
Control
REG5
OSC/Divider
Thermal
Detection
REG3
REG2
Start-Up
Ipeak-det
and blanking
SW control
REG4
voltage data
voltage data
Control
Error Amp
Control
Error Amp
voltage data
voltage data
Control
Error Amp
Control
Error Amp
UVLO
Detection
VIN
PWM
P-skip
PWM
P-skip
PWM
P-skip
PWM
P-skip
Startup Control
REG1/VG
VG
VG
ADC
VG
VG
VG
VG
VOUT1 (34704A)
VG
SW1
BT1
BT2D
PVIN2
SW2D
VOUT2
SW2U
BT2U
COMP2
FB2
BT3
PVIN3
SW3
VOUT3
FB3
BT4D
PVIN4
SW4D
VOUT4
SW4U
BT4U
FB4
COMP4
ONOFF
LION
FREQ
SS
PGND (EXPAD)
INTERNAL BLOCK DIAGRAM
34704
3