参数资料
型号: CS51033YDR8
厂商: ON Semiconductor
文件页数: 4/10页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM 8-SOIC
产品变化通告: Product Obsolescence 11/Feb/2009
Product Obsolescence 30/Dec/2003
标准包装: 2,500
PWM 型: 控制器
输出数: 1
频率 - 最大: 240kHz
占空比: 83.3%
电源电压: 3 V ~ 16 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
其它名称: CS51033YDR8OS
CS51033
PACKAGE PIN DESCRIPTION
Pin Number
1
2
3
4
5
6
7
8
Pin Symbol
V GATE
PGND
C OSC
GND
V FB
V CC
CS
V C
V CC
Function
Driver pin to gate of external P?Ch FET.
Output power stage ground connection.
Oscillator frequency programming capacitor.
Logic ground.
Feedback voltage input.
Logic supply voltage.
Soft?Start and fault timing capacitor.
Driver supply voltage.
RG
V C
+
C OSC
I C
7I C
Oscillator
Comparator
A1
?
G1
V GATE
Flip?Flop
R Q
V GATE
F2
PGND
1.5 V
2.5 V
G2
S
Q
V FB
Comparator
V FB
A6
0.7 V
1.25 V
V CC
V CC
G4
Fault
Comp
Hold Off
Comp
1.15 V
CS Charge
Sense
G3
A4
Comparator
CS
I T
+
CS
Comparator
2.3 V
A2
?
R
F1
Q
I T
55
I T
5
1.5 V
2.5 V
G5
S Q
Slow Discharge
2.4 V
?
A3
+
Slow Discharge
Comparator
Flip?Flop
GND
Figure 2. Block Diagram
http://onsemi.com
4
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