NCP4328

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3

PIN FUNCTION DESCRIPTION

NCP4328A

TSOP−5

NCP4328B

TSOP−6

Pin Name

Description

1

1

VCC

Supply voltage pin

2

2

GND

Ground

5

6

VSNS

Output voltage sensing pin, connected to output voltage divider

4

4

ISNS

Current sensing input for output current regulation, connect it to shunt resistor

in ground branch.

−

5

LED

PWM LED driver output. Connected to LED cathode with current define by

external serial resistance

3

3

FBC

Output of current sinking OTA amplifiers driving feedback optocoupler’s LED.

Connect here compensation networks as well.

ABSOLUTE MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Input Voltage

−0.3 to 40.0

V

FBC, LED Voltage

V

VSNS, ISNS Voltage

−0.3 to 10.0

V

LED Current

10

mA

Thermal Resistance − Junction−to−Air (Note 1)

315

°C/W

Junction Temperature

−40 to 150

°C

Storage Temperature

−55 to 125

°C

ESD Capability, Human Body Model (Note 2)

2000

V

ESD Capability, Machine Model (Note 2)

250

V

Stresses 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 stresses above the Recommended Operating Conditions may affect

device reliability.

2. This device series incorporates ESD protection and is tested by the following methods:

ESD Human Body Model tested per JESD22−A114F

ESD Machine Model tested per JESD22−A115C

Latchup Current Maximum Rating tested per JEDEC standard: JESD78D.