USL3531K

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 6

www.unisonic.com.tw

QW-R125-052 .a



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

5

mA

Internal HV MOSFET Drain Voltage

DRAIN

-0.3~500

V

Current Sense Pin Input Voltage

CS

-0.3~6

V

Over-Voltage Setting Pin Voltage

TEST

-0.3~6

V

Power Dissipation

0.45

W

Junction Temperature

-40~+150

°C

Storage Temperature

-55~+150

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



RECOMMENDED OPERATION CONDITIONS

PARAMETER

SYMBOL

RATINGS

UNIT

(Input Voltage 176V~265V)

160

mA

(Input Voltage 176V~265V)

220

mA

Minimum LED Loading Voltage

>15

V



THERMAL RESISTANCES CHARACTERISTICS

PARAMETER

SYMBOL

RATING

UNIT

Junction to Ambient

150

°C/W



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX UNIT

SUPPLY VOLTAGE SECTION

16.8

V

13.8

V

9

V

180

280

µA

200

300

µA

CURRENT SENSE SECTION

Threshold Voltage for Peak Current Limit

390

400

410

mV

Threshold Voltage for Peak Current Limit When

Output Short

200

mV

Leading Edge Blanking Time for Current Sense

300

ns

Switch Off Delay Time

200

ns

INTERNAL TIME CONTROL SECTION

Minimum OFF Time

3.0

µs

Maximum OFF Time

220

µs

Maximum On Time

35

µs

MOSFET SECTION

Static Drain-source On-resistance

14

Ω

Drain-Source Breakdown Voltage

500

V

Power MOSFET Drain Leakage Current

1

µA

THERMAL REGULATION SECTION

Thermal Regulation Temperature

150

°C

Notes: 1. Production testing of the chip is performed at 25°C.

2. The maximum and minimum parameters specified are guaranteed by test, the typical value are guaranteed

by design, characterization and statistical analysis.