LD7831

4

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD7831-DS-00 April 2014

Absolute Maximum Ratings

Supply Voltage VCC

-0.3 ~30V

High voltage pin, HV……………………………………………………………… -0.3 ~700V

OUT

-0.3 ~30V

COMP, ZCD

-0.3 ~6V

CS,

-0.3 ~6V

ZCD Pin Clamping Current

-1.5m~100

A

Maximum Junction Temperature

150

C

Storage Temperature Range

-65

C to 150C

Package Thermal Resistance (SOP-7/SOP-8,



160

C/W

Power Dissipation (SOP-7/SOP-8, Tj=125

250mW

Lead temperature (Soldering, 10sec)

260

C

ESD Voltage Protection, Human Body Model (except HV pin)

2.5KV

ESD Voltage Protection, Machine Model

250 V

Caution:

Stress exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stress above Recommended Operating Conditions may affect

device reliability.

Recommended Operating Conditions

Item

Min.

Max.

Unit

Operating Junction Temperature

-20

125

C

Supply VCC Voltage

10

26

V

Vcc pin capacitor

4.7

22

F

Comp pin capacitor

0.33

1

F

CS pin capacitor

47

470

pF

Note:

1.

It’s essential to connect VCC pin with a SMD ceramic capacitor (0.1

F~0.47F) to

filter out the undesired switching noise for stable operation. This capacitor should be

placed close to IC pin as possible

2.

Connecting a capacitor to COMP pin is also essential to filter out the undesired

switching noise for stable operation.

3.

The small signal components should be placed close to IC pin as possible.