MCZ34702EWR2 Freescale Semiconductor, MCZ34702EWR2 Datasheet - Page 2

• Manufacturer Part Number: MCZ34702EWR2
• Description: IC PWR SUPPLY 3A SW 32-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MCZ34702EWR2

• Applications: Controller, Power QUICC™ I, II
• Voltage - Input: 2.8 ~ 6 V
• Number Of Outputs: 2
• Voltage - Output: 7.75V, 0.8 ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-SOIC (7.5mm Width)
• Output Current: 3 A
• Input Voltage: 2.8 V to 6 V
• Switching Frequency: 300 KHz
• Mounting Style: SMD/SMT
• Duty Cycle (max): 95 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2
34702
INTERNAL BLOCK DIAGRAM
ADDR
VBST
VIN1
SDA
EN2
RST
SCL
VBD
EN1
RT
Q6
Q5
8.0 V
CLKSEL
Interface
Control
I
I
2
2
C
C
Control
Control
Reset
Timer
Boost
POR
VIN
Figure 2. 34702 Simplified Internal Block Diagram
CLKSYN
Oscillator
Switcher
300 kHz
INTERNAL BLOCK DIAGRAM
V REF
V REF
LFB
INV
SysCon
Thermal
FREQ
V REF
Reset
Limit
-
+
VBST
Reference
Bandgap
Voltage
VDDI
Ramp
SysCon
Gen.
Enable
Power
Voltage Margining
Watchdog Timer
Control
SoftSt
I
Sequencing
2
C
Power
Comp
PWM
GND
VDDI
Internal
Supply
VDDI
(4)
Control
Logic
Buck
+
VDDI
-
Current Limit
V REF
VDDI
VLDO
Power
VOUT
Down
VDDI
Error
Amp
Power
Regulator
+
UVLO
VBST
-
Seq
Control
Linear
VBST
Analog Integrated Circuit Device Data
Driver
I Lim
Buck
Power
and
HS
LS
Seq
0.8 V
VOUT
To Reset
To Reset
Control
Control
VBST
Freescale Semiconductor
Q4
Q3
Q1
Q2
(2)
(2)
(2)
VDDI
CS
SW
LDRV
LDO
VIN2
LFB
BOOT
PGND
INV
VOUT
LCMP