KP1059

Low System Cost, Non-isolated Buck LED Power Switch
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General Description

KP1059 is a highly integrated power switch with DCM Buck constant current (CC) control for LED lighting applications.

KP1059 combines a 500V power MOSFET switch with a power controller in one chip. The IC also integrates high voltage startup/IC supply circuit and a novel transformer demagnetization circuit, which eliminates transformer auxiliary winding. The IC supports small inductance, which lowers system cost greatly.

KP1059 integrates functions and protections of Under Voltage Lockout (UVLO), Cycle-by-cycle Current Limiting (OCP), Thermal Fold-back (OTP), LED Short Protection, etc.


Features

l   Integrated with 500V MOSFET

l   No Auxiliary Winding Needed

l   ±5% CC Regulation

l   Very Low VDD Operation Current

l   Support Low Cost Small Inductance

l   Built-in Thermal Fold-back

l   Built-in Charging Circuit for Fast Start-Up

l   Built-in AC Line CC Compensation

l   Build in Protections:

n  LED Short Protection

n  On-Chip Thermal Fold-back (OTP)

n  Cycle-by-Cycle Current Limiting

n  Leading Edge Blanking (LEB)

n  Pin Floating Protection

n  VDD UVLO

l   Available with SOT23-3L Package


Applications

l   E14 Filament lamp

Pin Configuration

Typical Application Circuit

Ordering Information

Part Number

Description

KP1059LGA

SOT23-3L, Halogen free in T&R, 3000Pcs/Reel


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