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參數(shù)資料
| 型號(hào)： | MC33466H-50LT1 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | FIXED FREQUENCY PWM MICROPOWER DC-to-DC CONVERTER |
| 中文描述： | SWITCHING CONTROLLER, 120 kHz SWITCHING FREQ-MAX, PSSO3 |
| 封裝： | PLASTIC, SOT-89, 3 PIN |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大小： | 170K |
| 代理商： | MC33466H-50LT1 |
MC33466
3
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS
(VCC = 2.0 V, IO = 10 mA and TA = 25
°
C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
30KT1 Suffix
33KT1 Suffix
50KT1 Suffix
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááááá
60
63
80
–
–
–
–
–
–
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
30LT1 Suffix
33LT1 Suffix
μ
áááááááááááááááááááááááááááááááááá
1.5
1.575
–
–
–
–
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
33LT1 Suffix
50LT1 Suffix
30LT1 Suffix
1.575
2.0
–
–
–
–
1.5
–
–
áááááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááááá
Maximum Duty Ratio Each Cycle
D
70
80
90
%
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
50KT1 or 50LT1 Suffix
Output Voltage
30KT1 or 30LT1 Suffix
4.875
5.0
5.125
V
2.925
3.0
3.075
Soft–Start Time (Note 2)
Tss
0.5
2.0
–
ms
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
50JT1 Suffix
Quiescent Bias Current (Vin = VO + 0.5 V, IO = 0 mA)
30JT1 Suffix
33JT1 Suffix
50JT1 Suffix
30JT1 Suffix
–
30
45
μ
A
–
15
25
–
–
–
1.2
1.2
2.0
5.0
5.0
5.0
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
33LT1 Suffix
50LT1 Suffix
Quiescent Bias Current (Vin = VO + 0.5 V, IO = 0 mA)
30LT1 Suffix
33LT1 Suffix
50LT1 Suffix
Quiescent Bias Current (Vin = 2.0 V, IO = 0 mA)
IQ
–
–
34.5
60
56
90
μ
A
–
–
–
1.2
1.2
2.0
5.0
5.0
5.0
NOTES
: 1.When the Lx switch is turned on, ILx current carried through the RDS(on) of the Lx switch results in VLx. When VLx reaches VLxLim, the Lx switch is
turned off by the Lx switch protection circuit.
2.The soft–start circuit turn–on sequence is as follows:
a) Vin is applied.
b) The internal IC Vref is held at zero for 200
μ
s. During this time, the error amplifier output voltage ramps up to the positive voltage rail.
c) The internal reference steps up to 0.7 V after 200
μ
s delay has timed out.
d) The error amplifier output voltage integrates down to its steady state value. As the error amplifier output integrates down, the output Lx pin of EXT
pin pulse width gradually widens to its steady operating value.
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