MCZ34702EWR2 Freescale Semiconductor, MCZ34702EWR2 Datasheet - Page 12

• 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

Table 4.
the typical application circuit (see
12
34702
ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
BUCK CONVERTER
OSCILLATOR
Notes
Duty Cycle Range (Normal Operation)
Switching Node SW Rise Time
Switching Node SW Fall Time
Maximum Deadtime
Buck Control Loop Propagation Delay
Soft Start Duration (Power Sequencing Disabled, EN1 = 1, EN2 = 1)
Fault Condition Time-Out
Retry Timer Cycle
Oscillator Center Frequency
Oscillator Frequency Range
Oscillator Frequency Adjusting Resistor Range
Oscillator Frequency Adjustment
Oscillator Frequency Adjustment
Oscillator Default Frequency (Switching Frequency), FREQ Pin Open
Oscillator Output Signal Duty Cycle (Square Wave, 180° Out-of-Phase with
the Internal Suitable Oscillator)
Synchronization Pulse Minimum Duration
18.
19.
20.
Characteristics noted under conditions -40°C
VIN = 5.0V, ILOAD = 1.0A
VIN = 5.0V, ILOAD = 1.0A
VINV < 0.8V to VSW > 90% of High Level or VINV > 0.8V to VSW < 10%
of Low Level
RF = 11.3kΩ
RF = 7.0kΩ
RF = 22kΩ
Design information only. This parameter is not production tested.
see Figure 4 for more details
RF = RFREQ resistor connected to the FREQ pin.
DYNAMIC ELECTRICAL CHARACTERISTICS
(18)
(18)
(18)
(20)
Characteristic
(18)
(18)
(19),
(19),
Figures
(20)
(20)
(18)
(18)
DYNAMIC ELECTRICAL CHARACTERISTICS
(18)
33), unless otherwise noted.
≤
T
A
≤
85°C unless otherwise noted. Input voltages VIN1 = VIN2 = 3.3V using
(18)
Symbol
R
t
t
D
t
FAULT
t
f
f
f
f
f
SYNC
t
RISE
FALL
OSC
OSC
FREQ
OSC
OSC
OSC
t
t
RET
OSC
t
PD
SS
D
D
Min
200
270
200
400
7.0
1.0
40
0
–
–
–
–
–
–
–
–
Analog Integrated Circuit Device Data
Typ
350
100
300
300
7.0
17
35
50
10
50
–
–
–
–
–
Freescale Semiconductor
Max
800
330
400
200
95
22
60
–
–
–
–
–
–
–
–
–
Unit
kHz
kHz
kHz
kHz
kHz
ms
ms
kΩ
ns
ns
ns
ns
µs
µs
%
%