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参数资料
| 型号： | PC34710EW |
| 厂商： | MOTOROLA INC |
| 元件分类： | 稳压器 |
| 英文描述： | Adjustable Dual Output Switching Power Supply |
| 中文描述： | 1.2 A SWITCHING REGULATOR, 260 kHz SWITCHING FREQ-MAX, PDSO32 |
| 封装： | LEAD FREE, PLASTIC, SOIC-32 |
| 文件页数： | 8/16页 |
| 文件大小： | 518K |
| 代理商： | PC34710EW |
34710
8
Go to: www.freescale.com
DYNAMIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions 4.75 V
≤
V
IO
≤
5.25 V, 12 V
≤
V
B
+
≤
32 V, and 0
°
C
≤
T
J
≤
105
°
C unless otherwise noted.
Typical values noted reflect the approximate parameter mean at T
A
= 25
°
C under nominal conditions unless otherwise noted
Characteristic
Symbol
Min
Typ
Max
Unit
V
I/O
SWITCHING REGULATOR
Duty Cycle
D
45
–
55
%
Switching Rise and Fall Time
Load Resistance = 100
, V
B
+
= 30 V
t
r
,
t
f
25
–
–
ns
Switching Rise and Fall Time
Load Resistance = 100
, V
B
+
= 30 V
t
r
+ t
f
–
–
50
ns
SUPERVISOR CIRCUITRY
RST
Delay
C
delay
= 0.1
μ
F
t
delay
48
–
82
ms
RST
Filter Time
V
B
+
= 9.0 V
t
filter
1.0
–
6.0
μ
s
RST
Fall Time
C
L
= 100 pF, R
PULLUP
= 4.7 k
, 90% to 10%
t
f
–
–
125
ns
External Low (Note 12)
V
I/O
= 5.0 V
t
slpl
(Note 13)
30
–
–
ns
RST
Recovery Time Before Next
RST
Input (Note 12)
V
I/O
= 5.0 V
t
phsl
–
–
10
μ
s
INTERNAL OSCILLATOR
Charge Pump and V
I/O
Switching Regulator Operating Frequency
V
B
+
=
9.0 V to 32 V
f
OP
140
–
260
kHz
Notes
12.
13.
See
Figure 2, RST Timing
, page 9.
t
slpl
is an input.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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