mc33702 Freescale Semiconductor, Inc, mc33702 Datasheet - Page 2

• Manufacturer Part Number: mc33702
• Description: 3.0 A Switch-mode Power Supply With Linear Regulator
• Manufacturer: Freescale Semiconductor, Inc

33702
2
RESET
RESET
ADDR
ADDR
V
VBST
VBST
SDA
SDA
SCL
SCL
V
VIN1
VIN1
V
VBD
VBD
BST
IN1
EN1
EN1
EN2
EN2
RT
RT
BD
8.0V
8.0V
CLKSEL
CLKSEL
Interface
Interface
Control
Control
I
I
I
I
2
2
2
2
C
C
Control
Control
Control
Control
Control
C
C
Reset
Reset
Timer
Timer
Boost
Boost
Boost
POR
POR
VIN
VIN
CLKSYN
CLKSYN
V
Freescale Semiconductor, Inc.
IN
For More Information On This Product,
Oscillator
Oscillator
Switcher
Switcher
Figure 1. 33702 Simplified Block Diagram
300kHz
300kHz
LFB
LFB
Vref
Vref
INV
INV
Vref
Vref
SysCon
SysCon
Thermal
Thermal
Vref
Vref
Limit
Limit
Reset
Reset
+
+
+
-
-
-
FREQ
FREQ
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Reference
Reference
VBST
VBST
Bandgap
Bandgap
V
Voltage
Voltage
VDDI
VDDI
BST
V
Enable
Enable
Power
Power
DDI
Voltage Margining
Voltage Margining
Comp.
Comp.
Comp.
Slope
Slope
Slope
Watchdog Timer
W-dog Timer
W-dog Timer
Control
Control
Sequencing
Sequencing
SoftSt
SoftSt
I
I
SysCon
SysCon
2
2
Power
Power
C
C
PGND
PGND
VDDI
VDDI
Comp.
Comp.
V
PWM
PWM
Internal
Internal
Supply
Supply
VDDI
VDDI
DDI
V
DDI
(4)
(4)
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Control
Control
Control
VDDI
VDDI
V
Logic
Logic
Logic
+
+
+
Buck
Buck
Buck
-
-
-
DDI
VLDO
VLDO
VOUT
VOUT
Current
Current
V
V
Power
Power
Down
Down
Vref
Vref
VDDI
VDDI
Limit
Limit
V
LDO
OUT
VDDI
VDDI
Amp.
Amp.
V
Error
Error
DDI
DDI
PWR Seq.
Pow. Seq.
Pow. Seq.
Regulator
Regulator
Regulator
PWR Seq.
Control
Control
Control
UVLO
UVLO
Linear
Linear
Linear
VBST
VBST
V
+
+
+
Pow.
Pow.
Seq.
Seq.
-
-
-
I
I-lim
I-lim
I-lim
V
VBST
VBST
Driver
Driver
Driver
LIM
BST
Buck
Buck
Buck
BST
HS
HS
HS
LS
LS
LS
0.8V
0.8V
&
&
&
VOUT
VOUT
V
To Reset
To Reset
OUT
Control
Control
VBST
VBST
V
BST
Q4
Q4
Q1
Q1
Q2
Q2
Q3
Q3
LCMP
LCMP
VDDI
VDDI
(2)
(2)
(2)
(2)
BOOT
BOOT
V
LDO
LDO
LFB
LFB
CS
CS
LDRV
LDRV
(2)
(2)
V
VIN2
VIN2
DDI
INV
INV
VOUT
VOUT
SW
SW
PGND
PGND
V
IN2
OUT