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KODENSHI KOREA
KODENSHI KOREA

KK494 Datasheet Preview

KK494 Datasheet

PWM Control Circuit

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KK494 pdf
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TECHNICAL DATA
PWM Control Circuit
KK494
The KKK494 incorporates on a single monolithic chip all the functions
required in the construction of a pulse-width-modulation control circuit.
Designed primarily for power supply control, the KK494 contains an on-
chip 5-volt regulator, two error amplifiers, adjustable oscillator, dead-
time control comparator, pulse-steering flip-flop, and output-control
circuitry. The uncommitted output transistors provide either common-
emitter or emitter-follower output capability. Push-pull or single-ended
output operation may be selected through the output-control function. The
architecture of the KK494 prohibits the possibility of either output being
pulsed twice during push-pull operation.
Complete PWM Power Control Circuitry
Uncommitted Outputs for 200 mA Sink or Source
Output Control Selects Single-Ended or Push-Pull Operation
Internal Circuitry Prohibits Double Pulse at Either Output
Internal Regulator Provides a Stable 5 V Reference Supply
Variable Dead-Time Provides Control Over Total Range
ORDERING INFORMATION
KK494N Plastic
KK494D SOIC
TA = -20°C to 85° C for all packages
PIN ASSIGNMENT
FUNCTION TABLE
Output Control
Grounded
At Vref
Output Function
Single-ended or Parallel Output
Normal Push-Pull Operation
LOGIC DIAGRAM
1



KODENSHI KOREA
KODENSHI KOREA

KK494 Datasheet Preview

KK494 Datasheet

PWM Control Circuit

No Preview Available !

KK494 pdf
www.DataSheet4U.com
KK494
MAXIMUM RATINGS
Symbol
VCC
VI
VO
Tstg
Parameter
Supply Voltage
Amplifier Input Voltage
Collector Output Voltage
Collector Output Current
Storage Temperature
Value
41
VCC +0.3
41
250
-65 to +150
Unit
V
V
V
mA
°C
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
VI
VO
CT
RT
TA
Parameter
Supply Voltage
Amplifier Input Voltage
Collector Output Voltage
Collector Output Current (Each Transistor)
Current Into Feed back Terminal
Timing Capacitor
Timing Resistor
Oscillator Frequency
Operating Free-Air Temperature
Min Max Unit
7 40 V
-0.3 VCC - 2
V
40 V
200 mA
0.3 mA
0.47 10.000 nF
1.8 500 K
1 300 KHz
-20 +85
°C
2


Part Number KK494
Description PWM Control Circuit
Maker KODENSHI KOREA
Total Page 5 Pages
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