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CS51033GDR8 Datasheet(PDF) 4 Page - ON Semiconductor

Part # CS51033GDR8
Description  Fast P?묬h FET Buck Controller
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS51033GDR8 Datasheet(HTML) 4 Page - ON Semiconductor

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CS51033
http://onsemi.com
4
PACKAGE PIN DESCRIPTION
Pin Number
Pin Symbol
Function
1
VGATE
Driver pin to gate of external P−Ch FET.
2
PGND
Output power stage ground connection.
3
COSC
Oscillator frequency programming capacitor.
4
GND
Logic ground.
5
VFB
Feedback voltage input.
6
VCC
Logic supply voltage.
7
CS
Soft−Start and fault timing capacitor.
8
VC
Driver supply voltage.
RG
VC
VGATE
PGND
Q
Q
R
S
F2
VGATE
Flip−Flop
G2
+
VFB
Comparator
A6
VFB
1.25 V
G1
0.7 V
Hold Off
Comp
Fault
Comp
1.15 V
A4
CS Charge
Sense
Comparator
Q
Q
R
S
F1
Slow Discharge
Flip−Flop
GND
G4
G5
+
A3
Slow Discharge
Comparator
2.3 V
2.4 V
+
A2
CS
Comparator
2.5 V
1.5 V
IT
55
IT
5
IT
CS
G3
COSC
2.5 V
1.5 V
A1
VCC
Oscillator
Comparator
VCC
VCC
IC
7IC
Figure 2. Block Diagram


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