USL1650

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

3 of 4

www.unisonic.com.tw

QW-R125-029.c



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Input Voltage

40

V

GATE Voltage

14

V

ACTL Voltage (Note 1)

8

V

VC Voltage

6

V

SENSE Voltage

-0.3~6

V

Power Dissipation

0.392

W

Junction Temperature

150

°C

Storage Temperature

-65~+150

°C

Notes: 1. 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.

2. If the ACTL pin is connected with a serial 1MΩ resistor, the maximum voltage can go up to 36V.



RECOMMENDED OPERATING CONDITIONS (Note)

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Input Voltage

17~32

V

Junction Temperature Range

-40~125

°C

Note: The device is not guaranteed to function outside its operating conditions.



THERMAL DATA

PARAMETER

SYMBOL

RATING

UNIT

Junction to Ambient

225

°C/W



PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Input Start-Up Voltage

15

17

19

V

Minimum Operation Voltage After Star t-Up

6.0

7.5

9.0

V

Input Quiescent Current

1.65

5.0

mA

Hiccup Operation

250

300

μA

Input Shutdown Current

0.1

5.0

μA

Over Voltage Protection

32.5 35.5 36.5

V

Current Sense Voltage

160

mV

Switching Frequency

38

47

55

kHz

Oscillator Maximum Duty Cycle

100

%

Minimum Turn-On Time

300

ns

Power MOSFET

Static Drain-Source On-State Resistance

11.5 15.5

Ω

Drain-Source Voltage

650

V

Drain-Source Leakage Current

10

μA

ACTL LED Dimming

Analog Dimming ACTL Pin Input Current

1

5

μA

Analog Dimming Range

0

1.3

V

Analog Dimming

Threshold Voltage

High Level

1.2

1.3

V

Low Level

0

0.1

V

VC Threshold for PWM Switch Off

1.1

1.25

1.4

V

Thermal Protection

Thermal Shutdown Temperature

150

°C