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參數資料
| 型號： | MC33466H-30LT1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | FIXED FREQUENCY PWM MICROPOWER DC-to-DC CONVERTER |
| 中文描述： | 0.25 A SWITCHING CONTROLLER, 120 kHz SWITCHING FREQ-MAX, PSSO3 |
| 封裝： | PLASTIC, SOT-89, 3 PIN |
| 文件頁數： | 8/12頁 |
| 文件大小： | 167K |
| 代理商： | MC33466H-30LT1 |
MC33466
8
MOTOROLA ANALOG IC DEVICE DATA
Figure 19. MC33466H–33JT1 Step–Down Application
Drive
100
330
μ
F
VLx Limiter
3
Vref
Gnd
PWM
Controller
50 kHz
Oscillator
2
VO
3.3 V
320 mA
1.0 k
Vin
MBRD0520LT1
47
μ
H
1.5 k
3.3 V
330
μ
F
MC33466H–33JT1
MMBT2907ALT1
1
MMBT2222ALT1
BZX84C3V3LT1
Startup Circuit
Lx
Output
330
μ
F
Soft–Start
Phase
Comp
Test
Condition
Results
Line Regulation
Vin = 5.0 V to 10 V, IO = 320 mA
Vin = 7.0 V, IO = 3.3 mA to 320 mA
Vin = 7.0 V, IO = 320 mA
Vin = 7.0 V, IO = 320 mA
7 mV =
±
0.1%
Load Regulation
3 mV =
±
0.04%
Output Ripple
70 mVpp
Efficiency
63.8%
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