CYStech Electronics Corp.

Spec. No. : C510Q8

Issued Date : 2003.04.24

Revised Date :

Page No. : 2/15

PL384XBQ8

CYStek Product Specification

Absolute Maximum Ratings

Symbol Parameter

Value

Unit

Supply Voltage (low impedance source)

30

V

Supply Voltage (Ii<30mA)

Self Limiting

Output Current

±

1

A

Output Energy (capacitive load)

5

µJ

Analog Inputs (pins 2, 3)

-0.3 to 5.5

V

Error Amplifier Output Sink Current

10

mA

Ptot

Power Dissipation at Tamb≤ 25℃

800

mW

Tstg

Storage Temperature Range

-65 to +150

℃

Junction Operating Temperature

-40 to +150

℃

Lead Temperature (soldering 10s)

300

℃

Note : All voltages are with respect to pin 5, all currents are positive into the specified terminal.

Pin Functions

No Function

Description

1

COMP

This pin is the Error Amplifier output and is made available for loop compensation.

2

This is the inverting input of the Error Amplifier. It is normally connected to the switching

power supply output through a resistor divider.

3

A voltage proportional to inductor current is connected to this input. The PWM uses this

information to terminate the output switch conduction.

4

The oscillator frequency and maximum output duty cycle are programmed by connecting

5

GROUND

This pin is the combined control circuitry and power ground.

6

OUTPUT

This output directly drives the gate of a power MOSFET. Peak currents up to 1A are sourced

and sunk by this pin.

7

This pin is the positive supply of the control IC.

8

Thermal Data

Symbol

Description

Value

Unit

Thermal Resistance, junction to ambient

150

℃

/W

COMP

OUTPUT

GROUND