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CS51021A Datasheet(PDF) 6 Page - ON Semiconductor

Part No. CS51021A
Description  Enhanced Current Mode PWM Controller
Download  11 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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CS51021A Datasheet(HTML) 6 Page - ON Semiconductor

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CS51021A, CS51022A, CS51023A, CS51024A
http://onsemi.com
6
D2
Start
+
Stop
SS
+
Clamp
E/A
+
ISET
+
Clamp
D3
D1
20 k
10 k
VFB
+
Monitor
G4
PWM
+
Comp
55 ns
Blank
Σ
ISENSE
SLOPE
VFB
COMP
RTCT
2nd
+
Threshold
OV
+
Monitor
DISABLE
0.1
0.8
Q2
1.33
53
mA
ISET
OV
12.5
mA
VREF
2.5 V
+
+
2.0 V
+
2.5 V
VREF
VISENSE
SS
+
Monitor
Discharge
Latch
UV
+
Monitor
1.45 V
+
4.7 V
+
S
R
Q
F1
G1
G2
D4
ZD1
13.5 V
VC
GATE
PGND
SS
UV
G3
FAULT
55
mA
VREF
OSC
SYNC
4.3 V
200 ns
+
VREF_OK
+
4.75 V
VREF = 5.0 V
+
+
0.1 V
VCC_OK
VREF
SLEEP
LGND
VCC
Figure 2. Block Diagram


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