LD5523D2

11/11/2020

4

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD5523D2-DS-00 November 2020

Absolute Maximum Ratings

Supply Voltage VCC,

-0.3V ~30V

COMP

-0.3V ~ 7V

OUT

-0.3V ~ VCC+0.3V

FB, CS

-0.3V~ 7V

Maximum Junction Temperature

150

C

Storage Temperature Range

-65

C to 150C

Package Thermal Resistance (SOT-26, θJA)

200

C/W

Power Dissipation (SOT-26, at Ambient Temperature = 85

C)

200mW

Lead temperature (Soldering, 10sec)

260

C

ESD Voltage Protection, Human Body Model

2 KV

ESD Voltage Protection, Machine Model

200 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

-40

125

C

VCC voltage

8

16

V

VCC capacitor

4.7

10

F

COMP Capacitor

680

2200

pF

CS Filter Capacitor

47

390

pF

Start-up resistor Value (AC Side, Half Wave)

400K

2M



Start-up resistor Value (VBulk Side)

2M

4.5M



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.