參數(shù)資料
型號： CD54-470L
廠商： ON SEMICONDUCTOR
元件分類： 基準電壓源/電流源
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 抗輻射高效，5安培開關(guān)穩(wěn)壓器
文件頁數(shù)： 4/18頁
文件大?。?/td> 158K
代理商： CD54-470L
NCP1402
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(For all values T
A
= 25
°
C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Switch On Time (current limit not asserted)
t
on
t
off
3.6
5.5
7.6
s
Switch Minimum Off Time
1.0
1.45
1.9
s
Maximum Duty Cycle
D
MAX
V
start
V
start
V
hold
t
SS
70
78
85
%
Minimum Startup Voltage (I
O
= 0 mA)
Minimum Startup Voltage Temperature Coefficient (T
A
= 40
°
C to 85
°
C)
Minimum Operation Hold Voltage (I
O
= 0 mA)
SoftStart Time (V
OUT
0.8 V)
0.8
0.95
V
1.6
mV/
°
C
0.3
V
0.3
2.0
ms
LX (PIN 5)
Internal Switching NChannel FET Drain Voltage
V
LX
I
LX
6.0
V
LX Pin OnState Sink Current (V
LX
= 0.4 V)
Device Suffix:
19T1
27T1
30T1
33T1
40T1
50T1
110
130
130
130
130
130
145
180
190
200
210
215
mA
Voltage Limit
V
LXLIM
I
LKG
0.45
0.65
0.9
V
OffState Leakage Current (V
LX
= 6.0 V, T
A
= 40
°
C to 85
°
C)
0.5
1.0
μ
A
CE (PIN 1)
CE Input Voltage (V
OUT
= V
SET
x 0.96)
High State, Device Enabled
Low State, Device Disabled
V
CE(high)
V
CE(low)
0.9
0.3
V
CE Input Current (Note 6)
High State, Device Enabled (V
OUT
= V
CE
= 6.0 V)
Low State, Device Disabled (V
OUT
= 6.0 V, V
CE
= 0 V)
I
CE(high)
I
CE(low)
0.5
0.5
0
0.15
0.5
0.5
μ
A
TOTAL DEVICE
Output Voltage
Device Suffix:
19T1
27T1
30T1
33T1
40T1
50T1
V
OUT
1.853
2.632
2.925
3.218
3.900
4.875
1.9
2.7
3.0
3.3
4.0
5.0
1.948
2.768
3.075
3.383
4.100
5.125
V
Output Voltage Temperature Coefficient (T
A
= 40
°
C to +85
°
C)
Device Suffix:
19T1
27T1
30T1
33T1
40T1
50T1
V
OUT
150
150
150
150
150
150
ppm/
°
C
Operating Current 2 (V
OUT
= V
CE
= V
SET
+0.5 V, Note 5)
OffState Current (V
OUT
= 5.0 V, V
CE
= 0 V, T
A
= 40
°
C to +85
°
C, Note 6)
Operating Current 1 (V
OUT
= V
CE
= V
SET
x 0.96)
Device Suffix:
19T1
27T1
30T1
33T1
40T1
50T1
I
DD2
I
OFF
I
DD1
13
15
μ
A
μ
A
μ
A
0.6
1.0
30
39
42
45
55
70
50
60
60
60
100
100
5. V
SET
means setting of output voltage.
6. CE pin is integrated with an internal 10 M
pullup resistor.
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