KIA3842P

Manufacturer Part NumberKIA3842P
ManufacturerKEC(Korea Electronics)
KIA3842P datasheet
 


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SEMICONDUCTOR
HIGH PERFORMANCE CURRENT MODE CONTROLLER
The KIA3842P/F is high performance fixed frequency current
mode controller. This is specifically designed for Off-Line and
DC to DC converter applications offering the designer a cost effective
solution with minimal external components. This integrated circuit
feature a trimmed oscillator for precise duty cycle control, a temperature
compensated reference, high gain error amplifier, current sensing
comparator, and a high current totempole output ideally suited for driving
a power MOSFET. Also included are protective features consisting of
input and reference undervoltage lockouts each with hysteresis, cycle-by-
cycle current limiting, programmable output deadtime, and a latch for
single pulse metering. These devices are available in 8pin dual-in-line
plastic packages as well as the 14pin plastic, surface mount(FLP-14).
The FLP-14 package has separate power and ground pins for the
totempole output stage. The KIA3842P/F has UVLO thresholds of
16V(on) and 10V(off), ideally suited for off-line converters.
FEATURES
Trimmed Oscillator Discharge Current for Precise Duty Cycle Control.
Current Mode Operation to 500kHz.
Automatic Feed Forward Compensation.
Latching PWM for Cycle-By-Cycle Current Limiting.
Internally Trimmed Reference with Undervoltage Lockout.
High Current TotemPole Output.
Undervoltage Lockout with Hysteresis.
Low Start-up and Operating Current.
MAXIMUM RATINGS (Ta=25 )
CHARACTERISTIC
Total Power Supply and Zener Current
Output Current, Source of Sink (Note 1)
Output Energy (Capacitive Load Per Cycle)
Current Sense and Voltage Feedback inputs
Error Amp Output Sink Current
KIA3842P
Power Dissipation
KIA3842F
Operating Temperature
Storage Temperature
Note 1) : Maximum package power dissipation limits must be observed.
1997. 7. 16
Revision No : 1
TECHNICAL DATA
SYMBOL
RATING
UNIT
(I
+I
)
30
mA
CC
Z
I
1.0
A
O
W
5.0
J
V
-0.3 to + 5.5
V
IN
I
10
mA
O
1.25
W
P
D
862
mW
Ta
0 to + 70
T
-65 to + 150
stg
KIA3842P/F
BIPOLAR LINEAR INTEGRATED CIRCUIT
D
W
d
P
T
DIM MILLIMETERS
A
A
9.6 0.2
8
5
B
6.45 0.2
D
1.52 0.1
d
0.46 0.1
G
0.50 MIN
H
3.8 0.3
L
3.3 0.3
1
4
P
T
0.25+0.1/-0.05
W
Q
DIP-8
P
L
D
A
DIM
MILLIMETERS
14
8
A
B1
B2
D
G
0.15+0.1/-0.05
H
L
P
T
0.20+0.1/-0.05
1
7
FLP-14
Q
+ _
+ _
+ _
+ _
+ _
+ _
2.54
7.62
0 - 15
+ _
8.66 0.2
+ _
3.94 0.2
+ _
6.00 0.3
+ _
0.4 0.1
+ _
1.63 0.2
+ _
0.65 0.2
1.27
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KIA3842P Summary of contents