DATA SHEET

www.onsemi.com

© Semiconductor Components Industries, LLC, 2014

April, 2022 − Rev. 2

1

Publication Order Number:

FSL4110LR/D

1000 V SenseFET

Integrated Power Switch

FSL4110LR

Description

The FSL4110LR is an integrated pulse width modulation (PWM)

controller and 1000 V avalanche rugged SenseFET specifically

designed for high input voltage offline Switching Mode Power

Supplies (SMPS) with minimal external components. VCC can be

supplied through integrated high−voltage power regulator without

auxiliary bias winding.

The integrated PWM controller includes a fixed−frequency

oscillator, Under−Voltage Lockout (UVLO), Leading−Edge Blanking

(LEB), optimized gate driver, soft−start, temperature−compensated

precise current sources for loop−compensation, and variable

protection circuitry.

Compared with a discrete MOSFET and PWM controller solution,

the FSL4110LR reduces total cost, component count, PCB size, and

weight; while simultaneously increasing efficiency, productivity, and

system reliability. This device provides a basic platform for

cost−effective design of a flyback converter.

Features

• Built−in Avalanche Rugged 1000 V SenseFET

• Precise Fixed Operating Frequency: 50 kHz

• VCC can be Supplied from either Bias−winding or Self−biasing

• Soft Burst−Mode Operation Minimizing Audible Noise

• Random Frequency Fluctuation for Low EMI

• Pulse−by−Pulse Current Limit

• Various Protection Functions: Overload Protection (OLP),

Over−Voltage Protection (OVP), Abnormal Over−Current Protection

(AOCP), Internal Thermal Shutdown (TSD) with Hysteresis.

Under−Voltage Lockout (UVLO) and Line Over−Voltage Protection

(LOVP) with Hysteresis.

• Built−in Internal Startup and Soft−Start Circuit

• Fixed 1.6 s Restart Time for Safe Auto−Restart Mode of All

Protections

• These are Pb−Free Devices

Applications

• SMPS for Electric Metering

• Auxiliary Power Supply for 3−Phase Input Industrial Systems

MARKING DIAGRAM

See detailed ordering and shipping information on page 13 of

this data sheet.

ORDERING INFORMATION

PDIP−7 (PDIP−8 LESS PIN 6)

(7−DIP)

CASE 626A

PDIP7 MINUS PIN 6 GW

(7−LSOP)

CASE 707AA

$Y&Z&2&K

L4110LR

$Y

= Logo

&Z

= Assembly Plant Code

&2

= 2−Digit Date Code

&K

= 2−Digits Lot Run Traceability Code

L4110LR

= Specific Device Code

$Y&Z&2&K

L4110LR

FSL4110LRN

FSL4110LRLX