USL3633

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

3 of 6

www.unisonic.com.tw

QW-R103-097.b



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

5

mA

Internal HV MOSFET Drain Voltage

-0.3~600

V

Current Sense Pin Input Voltage

CS

-0.3~6

V

Over-Voltage Setting Pin Voltage

-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)

280

mA

(Input Voltage 176V~265V)

350

mA

Minimum LED Loading Voltage

>15

V



THERMAL RESISTANCES CHARACTERISTICS

PARAMETER

SYMBOL

RATING

UNIT

Junction to Ambient

145

°C/W



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX UNIT

Supply Voltage Section

16.8

V

13.8

V

9

V

160

250

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

350

ns

Switch Off Delay Time

200

ns

Internal Time Control Section

Minimum OFF Time

4.5

µs

Maximum OFF Time

240

µs

Maximum On Time

35

µs

0.5

V

MOSFET Section

Static Drain-source On-resistance

5

Ω

Drain-Source Breakdown Voltage

600

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.