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參數資料
| 型號： | MC34129P |
| 廠商： | MOTOROLA INC |
| 元件分類： | 穩壓器 |
| 英文描述： | HIGH PERFORMANCE CURRENT MODE CONTROLLERS |
| 中文描述： | 1 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDIP14 |
| 封裝： | PLASTIC, DIP-14 |
| 文件頁數： | 13/16頁 |
| 文件大?。?/td> | 347K |
| 代理商： | MC34129P |
MC34129 MC33129
13
MOTOROLA ANALOG IC DEVICE DATA
Figure 28. Non–Isolated 725 mW Flyback Regulator
T1: Coilcraft #G6807–A
Primary = 90T #28 AWG
Secondary
±
5V = 26T #30 AW
Gap = 0.05 n, for Lp of 600
μ
H
Core = Ferroxcube 813E187–3C8
Bobbin = Ferroxcube E187PCB1–8
12
0.1
7
24k
470pF
128kHz
Sync
6
5
4
2.5 V
OSC
R
S
Q
1.25V
220k
13
14
1N958A
8
9
10
500pF
11
1
2
3
2.2k
2N5551
1N4148
+ 10
36k
R2
12k
R1
MTP
2N20L
10
50
T1
1N5819
5V/125mA
100
Gnd
100
–5V/20mA
1N5819
Vin = 20V to 48V
+
–
+
–
+
–
+
–
+
–
+
–
+
+
+
Test
Conditions
Results
Line Regulation 5.0 V
Vin = 20 V to 40 V, Iout 5.0 V = 125 mA, Iout –5.0 V = 20 mA
Vin = 30 V, Iout 5.0 V = 0 mA to 150 mA, Iout –5.0 V = 20 mA
Vin = 30 V, Iout 5.0 V = 125 mA, Iout –5.0 V = 20 mA
Vin = 30 V, Iout 5.0 V = 125 mA, Iout –5.0 V = 20 mA
= 1.0 mV
Load Regulation 5.0 V
= 2.0 mV
Output Ripple 5.0 V
150 mVpp
Efficiency
77%
Vout = 1.25
R2
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