MC34129D Freescale Semiconductor, MC34129D Datasheet - Page 15

• Manufacturer Part Number: MC34129D
• Description: IC CTLR CURRENT MODE 14-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC34129D

• Applications: Telecommunications
• Current - Supply: 2.5mA
• Voltage - Supply: 4 V ~ 12 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Q1707365A

4N26
MOTOROLA ANALOG IC DEVICE DATA
1/2
An economical method of achieving secondary sensing is to combine the TL431A with a 4N26 optocoupler.
0.1
Line Regulation
Load Regulation
Output Ripple
Efficiency
12
7
4
6
5
Test
Figure 30. Isolated 3.0 W Flyback Regulator with Secondary Side Sensing
2.5V
OSC
–
+
Freescale Semiconductor, Inc.
For More Information On This Product,
V in = 8.0 V to 12 V, I out 600 mA
V in = 12 V, I out = 100 mA to 600 mA
V in = 12 V, I out = 600 mA
V in = 12 V, I out = 600 mA
S
R
Go to: www.freescale.com
Q
+
–
MC34129 MC33129
+
–
+
–
Conditions
1.25V
+
–
14
13
10
11
2
3
8
9
1
100
G
V in = 12V
M
D
K
1N5821
S
470
MTP10N10M
T1:
L1:
+
20 mVpp
4N26
Results
L1
= 1.0 mV
= 8.0 mV
1/2
Primary = 22T #18 AWG
Secondary = 22T #18 AWG
Lp = 50 H
Core = Ferroxcube
2616PA100–3C8
Bobbin = Ferroxcube 2616F1D
Coilcraft Z7156, 15 H
81%
TL431A
51
0.1
+
5/60mA
Return
100
15