MFG:SAMSUNG Package Cooled:DIP8 D/C:04+
MFG: SAMSUNG
Package Cooled: DIP8
D/C: 04+
Description: The KA7525B provides simple and high performance active power factor correction. KA7525B is optimized ...
The KA7525B provides simple and high performance active power factor correction. KA7525B is optimized for electronic ballast and low power, high density power supplies requiring a minimum board area, reduced component count and low power dissipation. Addition of internal current sense blanking (Internal R,C) eliminates the need for an external R/C filter. Internal clamping of the error amplifier and multiplier outputs improves turn on overshoot characteristics and current limiting. Special circuitry has also been added to prevent no load runaway conditions. Output drive clamps limiting power MOSFET gate drive independent of supply voltage greatly enhance the products practical application.
|
Parameter |
Symbol |
Value |
Unit |
| Supply Voltage |
Vcc |
20 |
V |
| Peak Driver Output Current |
Ioh, IoI |
±500 |
mA |
| Driver Output Clamping Diodes VO > VCC or VO < -0.3V |
Iclamp |
±10 |
mA |
| Detector Clamping Diodes |
Idet |
±10 |
mA |
| Error Amp, Multiplier and Comparator Input Voltage |
Vin |
-0.3 to 6 |
V |
| Operating Temperature Range |
TOPR |
0 to 125 |
°C |
| Storage Temperature Range |
TSTG |
-65 to 150 |
°C |
| Power Dissipation |
Pd |
0.8 |
W |
| Thermal Resistance (Junction-to-Air) |
Rja |
100 |
°C/W |
• Internal Start-up Timer
• Internal Current Sense Blanking Which Eliminates the Need for an External R/C filter
• Overvoltage Comparator Eliminates Runaway Output Voltage
• Zero Current Detector
• One Quadrant Multiplier
• Trimmed 1.5% Internal Bandgap Reference
• Under Voltage Lock Out with 2.1V of Hysteresis
• Totem Pole Output with High State Clamp
• Low Start-up and Operating Current
• 8-Pin DIP or 8-Pin SOP.
KA7525B
PDF/DataSheet Download
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The KA7524B provides the necessary features to implement the Electronic BALLAST control and S.M.P.S application for designing on active power factor correction circuit.
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