UPSRB04

Preliminary

CMOS IC

UNISONIC TECHNOLOGIES CO., LTD

3 of 7

www.unisonic.com.tw



ABSOLU T E M AX I M U M RAT I N G

PARAMETER

SYMBOL

RATINGS

UNIT

-0.3 ~ 30

V

VC Voltage

-0.3 ~ 7

V

BASE Voltage

-0.3 ~ 7

V

CS Input Voltage

-0.3 ~ 7

V

FB Input Voltage

-0.3 ~ 7

V

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.



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Start up Current

5

15

μA

Static Current

0.72

1

mA

Turn-off Threshold Voltage

6.5

7.1

7.8

V

Turn-on Threshold Voltage

18.4

19.4

20.4

V

26.5

28

29.5

V

Operating Voltage

26

V

Current Sense Input Section

LEB Time

0.5

μS

Minimum Over Current threshold

485

500

515

mV

Maximum Over Current threshold

555

mV

Minimum CS threshold

100

mV

Maximum TON Time

50

uS

OCP Propagation Delay

100

nS

FB Input Section

Reference Voltage for Feedback

Threshold

2.475

2.5

2.525

V

Minimum Pause

2.0

μS

Minimum frequency

720

800

880

Hz

Maximum Cable Compensation

Current

48

μA

BASE Drive Section

Base Sourcing Maximum Current

50

mA

Base Sourcing Current After Pre-off

1.5

mA

Output Over Voltage Protection

Output over voltage threshold

2.85

3

3.15

V

On chip over temperature section

Over temperature protection trigger

point

165

°C

Over temperature protection

recovery point

130

°C