datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

UC2843BN View Datasheet(PDF) - Motorola => Freescale

Part Name
Description
View to exact match
UC2843BN
Motorola
Motorola => Freescale Motorola
UC2843BN Datasheet PDF : 16 Pages
First Prev 11 12 13 14 15 16
UC3842B, 43B UC2842B, 43B
Figure 20. External Clock Synchronization
Vref
8(14)
RT
R
Bias
R
External
Sync
Input
CT
4(7)
0.01
47
2(3)
Osc
+
2R
EA
R
1(1)
5(9)
The diode clamp is required if the Sync amplitude is large enough to cause the bottom
side of CT to go more than 300 mV below ground.
Figure 21. External Duty Cycle Clamp and
Multi–Unit Synchronization
RA
8
RB
5.0k
6
5
5.0k
2
C
5.0k
1
4
R
Q
S
MC1455
8(14)
3
4(7)
7
2(3)
1(1)
R
Bias
R
Osc
+
2R
EA
R
To Additional
5(9)
+ ) f
1.44
(RA 2RB)C
+ ) D(max)
RB
RA 2RB
UCX84XBs
Figure 22. Adjustable Reduction of Clamp Level
VCC
Vin
7(12)
5.0V Ref
8(14)
R
+
Bias
4(7)
R2
2(3)
R
Osc
+
1.0 mA
+
VClamp
EA
2R
R
1.0V
S
Q
R
Comp/Latch
7(11)
Q1
6(10)
5(8)
1(1)
R1
5(9)
3(5)
RS
ǒ Ǔ VClamp
1.67
) R2
R1
1
ǒ ) Ǔ + 0.33x10–3
R1R2
R1 R2
Where: 0 VClamp 1.0 V
[ Ipk(max)
VClamp
RS
Figure 23. Soft–Start Circuit
8(14)
4(7)
2(3)
1.0M
R
Bias
R
Osc
+
1.0mA
EA
5.0V Ref
+
S
Q
2R
R
R
1.0V
1(1)
C
tSoft–Start 3600C in µF
5(9)
MOTOROLA ANALOG IC DEVICE DATA
11
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]