參數(shù)資料
型號(hào): MC33067DWR2G
廠商: ON SEMICONDUCTOR
元件分類: 穩(wěn)壓器
英文描述: High Performance Resonant Mode Controllers
中文描述: 1.5 A SWITCHING CONTROLLER, 2200 kHz SWITCHING FREQ-MAX, PDSO16
封裝: LEAD FREE, PLASTIC, SOIC-16
文件頁(yè)數(shù): 7/16頁(yè)
文件大?。?/td> 544K
代理商: MC33067DWR2G
MC34067, MC33067
http://onsemi.com
7
3
Figure 14. MC34067 Representative Block Diagram
12
Output B
13
14
8
7
Inverting Input
Oscillator
Control Current
16
9
8.0 V
Q2
R
R
T
C
T
R
OSC
C
OSC
R
VFO
V
ref
4.9V/3.6 V
15
V
CC
Enable /
UVLO Adjust
OSC Charge
OSC RC
OneShot RC
Error Amp Output
Noninverting Input
SoftStart
Ground
4
Fault Input
Power
Ground
Output A
V
ref
D1
Q1
I
OSC
Oscillator
OneShot
Error Amp
Clamp
3.1V
Error Amp
9.0 A
1.0 V
Q
Q
T
Steering
FlipFlop
4.2/4.0 V
V
ref
UVLO
V
CC
UVLO
7.0k
50k
7.0k
50k
4.9 V/3.6 V
V
ref
5.1 V
Reference
1
2
6
11
5
10
Figure 15. Timing Diagram
5.1 V
3. 6 V
C
OSC
5.1 V
3.6 V
OneShot
Output A
Output B
t
OS
t
OS
t
OS
t
OS
t
OS
t
OS
High State Error Amp output, minimum I
current
occurring at minimum input voltage, maximum load.
Low State Error Amp output, maximum I
current
occurring at maximum input voltage, minimum load.
Fault Comparator
I
OSC
Fault
Latch
S
R
Q
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