MC34067DW ON Semiconductor, MC34067DW Datasheet - Page 7

• Manufacturer Part Number: MC34067DW
• Description: IC CTRLR SMPS DBL END HF 16SOIC
• Manufacturer: ON Semiconductor
• Type: Flybackr

Specifications of MC34067DW

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 100mA
• Frequency - Switching: 525kHz ~ 2.05MHz
• Voltage - Input: 2.5 ~ 20 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Power - Output: 862mW
• Output Voltage Range: 5 V to 5.2 V
• Input Voltage Range: 20 V
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MC34067DWOS

C
R
T
One-Shot
OSC
R
T
C
Output A
Output B
C
Noninverting Input
OSC
Error Amp Output
OSC
3. 6 V
5.1 V
5.1 V
3.6 V
Control Current
Inverting Input
One-Shot RC
UVLO Adjust
OSC Charge
I
OSC
Soft-Start
Oscillator
OSC RC
Enable /
High State Error Amp output, minimum I
occurring at minimum input voltage, maximum load.
V
t
OS
R
CC
VFO
16
15
11
9
1
2
3
6
8
7
Error Amp
7.0k
Figure 14. MC34067 Representative Block Diagram
50k
50k
t
OS
I
OSC
Error Amp
One-Shot
8.0 V
Clamp
3.1V
Q1
Figure 15. Timing Diagram
OSC
7.0k
http://onsemi.com
current
Oscillator
4.9 V/3.6 V
D1
4.9V/3.6 V
t
V
OS
V
9.0 mA
CC
ref
UVLO
7
Q2
4
Reference
Ground
5.1 V
V
ref
Low State Error Amp output, maximum I
occurring at maximum input voltage, minimum load.
V
UVLO
ref
Flip-Flop
Steering
Q
T
Latch
Fault
R
t
Q
Q
R
S
OS
4.2/4.0 V
Fault Comparator
t
OS
1.0 V
t
OS
OSC
14
13
12
10
5
V
Output A
Output B
Fault Input
Power
Ground
current
ref