參數(shù)資料
型號: MCZ34701EWR2
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: 1.5A Switch-Mode Power Supply with Linear Regulator
中文描述: 1.5A的開關(guān)模式電源,線性穩(wěn)壓器
文件頁數(shù): 12/39頁
文件大?。?/td> 528K
代理商: MCZ34701EWR2
Analog Integrated Circuit Device Data
Freescale Semiconductor
12
34701
ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. DYNAMIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions -40°C
T
A
85
°
C unless otherwise noted. Input voltages VIN1 = VIN2
= 3.3V using
the typical application circuit (see
Figures 33
), unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
BUCK CONVERTER
Duty Cycle Range (Normal Operation)
(18)
t
D
0.0
95
%
Switching Node SW Rise Time
(18)
VIN = 5.0V, ILOAD = 1.0A
t
RISE
7.0
ns
Switching Node SW Fall Time
(18)
VIN = 5.0V, ILOAD = 1.0A
t
FALL
17
ns
Maximum Deadtime
(18)
t
D
35
ns
Buck Control Loop Propagation Delay
(18)
VINV
< 0.8V to VSW > 90% of High Level or VINV > 0.8V to VSW < 10%
of Low Level
t
PD
50
ns
Soft Start Duration (Power Sequencing Disabled, EN1 = 1, EN2 = 1)
(18)
t
SS
200
350
800
μ
s
Fault Condition Timeout
(18)
t
FAULT
7.0
10
15
ms
Retry Timer Cycle
(18)
t
RET
70
100
150
ms
OSCILLATOR
Oscillator Center Frequency
(20)
RF = 11.3k
f
OSC
270
300
330
kHz
Oscillator Frequency Range
f
OSC
200
400
kHz
Oscillator Frequency Adjusting Resistor Range
R
FREQ
7.0
22
k
Oscillator Frequency Adjustment
(19)
,
(20)
RF = 7.0k
f
OSC
400
kHz
Oscillator Frequency Adjustment
(19)
,
(20)
RF = 22k
f
OSC
200
kHz
Oscillator Default Frequency (Switching Frequency), FREQ Pin Open
f
OSC
300
kHz
Oscillator Output Signal Duty Cycle (Square Wave, 180° Out-of-Phase with
the Internal Suitable Oscillator)
D
OSC
40
50
60
%
Synchronization Pulse Minimum Duration
(18)
t
SYNC
1.0
μ
s
Notes
18.
19.
20.
Design information only. This parameter is not production tested.
see Figure 4 for more details
RF is RFREQ
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