E-UC3843BD1013TR STMicroelectronics, E-UC3843BD1013TR Datasheet - Page 9
![IC CTRLR PWM CURR-MODE HP 8-SOIC](/photos/1/38/13851/497-8-soic_sml.jpg)
E-UC3843BD1013TR
Manufacturer Part Number
E-UC3843BD1013TR
Description
IC CTRLR PWM CURR-MODE HP 8-SOIC
Manufacturer
STMicroelectronics
Datasheet
1.UC3845BD1013TR.pdf
(15 pages)
Specifications of E-UC3843BD1013TR
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
500kHz
Duty Cycle
100%
Voltage - Supply
8.2 V ~ 25 V
Buck
No
Boost
Yes
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
0°C ~ 70°C
Package / Case
8-SOIC (3.9mm Width)
Frequency-max
500kHz
Duty Cycle (max)
100 %
Output Voltage
4.90 V to 5.10 V
Output Current
1000 mA
Mounting Style
SMD/SMT
Switching Frequency
500 KHz
Operating Supply Voltage
30 V
Maximum Operating Temperature
+ 150 C
Fall Time
50 ns
Minimum Operating Temperature
- 40 C
Rise Time
50 ns
Synchronous Pin
No
Topology
Boost, Flyback, Forward
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-4603-6
Figure 19 : Isolated MOSFET Drive and Current Transformer Sensing.
Figure 18 : Slope Compensation Techniques.
R
I
S
S
5.0V ref
+
+
-
R
-
R
SLOPE
1
COMP/LATCH
R
S
Q
+
-
R
C
I
R
SENSE
T
T
V
V
T
REG
/C
CC
T
7
8
4
3
D95IN349
UC3842B
5
GND
6
3
C
BOUNDARY
ISOLATION
R
UC2842B/3B/4B/5B - UC3842B/3B/4B/5B
R
S
R
I
S
S
R
R
SLOPE
1
N
S
Q1
V
in
N
P
R
C
I
R
T
T
SENSE
V
T
REG
/C
+
0
-
I
pk
T
50% DC
=
V
8
4
3
V
(pin 1)
GS
3R
UC3842B
Waveforms
S
-1.4
5
+
0
-
GND
( )
D95IN348
25% DC
N
N
S
P
9/15