USRB02

Preliminary

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LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

3 of 7

www.unisonic.com.tw

QW-R103-087.a



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

-0.3~30

V

C Voltage

-0.3~700

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

Lead Temperature (Soldering, 10 secs)

260

°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.



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

Junction to Ambient

150

°C/W



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX UNIT

Start up Current

5

15

μA

Static Current

0.72

1.0

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

Vth_ocp_min

485

500

515

mV

Maximum Over Current Threshold

Vth_ocp_max

555

mV

Minimum CS threshold

Vcs_mini

100

mV

Maximum Ton

Ton_max

50

uS

OCP Propagation Delay

From OCP Comparator to Base

Drive

100

nS

FB Input Section

Reference Voltage for Feedback

Threshold

2.475

2.5

2.525

V

Minimum Toff

Tpause_min

2.0

uS

Minimum frequency

F_min

720

800

880

Hz

Maximum Cable Compensation

Current

Icable

48

μA

Output over voltage threshold

V_ovp

2.85

3.00

3.15

V

Power BJT Section

Collector-emitter breakdown voltage

450

V

Collect Peak Current

0.6

A

Collector-Base Breakdown Voltage

700

V

On Chip Over Temperature Section

Over Temperature Protection

T_otp

165

°C

Over Temperature Protection

recovery point

T_otp_rec

130

°C