kia3842f Korea Electronics (KEC GROUP), kia3842f Datasheet

kia3842f

Manufacturer Part Number

kia3842f

Description

High Performance Current Mode Controller

Manufacturer

Korea Electronics (KEC GROUP)

Datasheet

1.KIA3842F.pdf (7 pages)

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1997. 7. 16

HIGH PERFORMANCE CURRENT MODE CONTROLLER

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).

totempole output stage. The KIA3842P/F has UVLO thresholds of

16V(on) and 10V(off), ideally suited for off-line converters.

FEATURES

MAXIMUM RATINGS (Ta=25 )

Note 1) : Maximum package power dissipation limits must be observed.

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

Power Dissipation

Operating Temperature

Storage Temperature

The FLP-14 package has separate power and ground pins for the

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.

The KIA3842P/F is high performance fixed frequency current

CHARACTERISTIC

Revision No : 1

SEMICONDUCTOR

KIA3842P

KIA3842F

TECHNICAL DATA

SYMBOL

stg

)

-0.3 to + 5.5

-65 to + 150

RATING

0 to + 70

1.25

862

1.0

5.0

UNIT

BIPOLAR LINEAR INTEGRATED CIRCUIT

KIA3842P/F

FLP-14

DIP-8

DIM MILLIMETERS

DIM

0.25+0.1/-0.05

MILLIMETERS

6.45 0.2

1.52 0.1

0.46 0.1

0.50 MIN

0.15+0.1/-0.05

0.20+0.1/-0.05

9.6 0.2

3.8 0.3

3.3 0.3

0 - 15

8.66 0.2

3.94 0.2

6.00 0.3

1.63 0.2

0.65 0.2

2.54

7.62

0.4 0.1

+ _

1.27

+ _

1/7

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kia3842f Summary of contents

Page 1

... 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 Revision ...

Page 2

... PIN CONNECTIONS (TOP VIEW) KIA3842P Voltage Feedback KIA3842F Voltage Feedback BLOCK DIAGRAM V ref 8(14 4(7) + Voltage Feedback - Input 2(3) Error Amplifier Output/ Compensation 1(1) Pin numbers adjacent to terminsls are for the DIP-8 package. Pin numbers in parenthesis are for the FLP-14 package. 1997 ...

Page 3

ELECTRICAL CHARACTERISTICS (Vcc=15V(Note 2), R REFERENCE SECTION CHARACTERISTIC Reference Output Voltage Line Regulation Load Regulation Temperature Stability Total Output Variation over Line, Load, and Temperature Output Noise Voltage Long Term Stability Output Short Circuit Current OSCILLATOR SECTION CHARACTERISTIC Frequency Frequency ...

Page 4

OUTPUT SECTION CHARACTERISTIC Low State Output Voltage High State Output Voltage Rise Time Fall Time UNDER VOLTAGE LOCKOUT SECTION CHARACTERISTIC Start-up Threshold Voltage Minimum Operating Voltage PWM SECTION CHARACTERISTIC Duty Cycle Max. Duty Cycle Min. TOTAL DEVICE CHARACTERISTIC Power Supply ...

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kia3842f Korea Electronics (KEC GROUP), kia3842f Datasheet

kia3842f

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kia3842f Summary of contents

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