PL384XAP8 Datasheet, PDF (2/15 Pages) Cystech Electonics Corp. – High Performance Current Mode PWM Controllers

Spec. No. : C510P8-A
CYStech Electronics Corp.
Issued Date : 2003.08.12
Revised Date :
Page No. : 2/15
Absolute Maximum Ratings
Symbol Parameter
VI Supply Voltage (low impedance source)
VI Supply Voltage (Ii<30mA)
IO Output Current
EO Output Energy (capacitive load)
Analog Inputs (pins 2, 3)
Error Amplifier Output Sink Current
Ptot Power Dissipation at Tamb≤ 25℃
Tstg Storage Temperature Range
TJ Junction Operating Temperature
TL Lead Temperature (soldering 10s)
Value
Unit
30
V
Self Limiting
±1
A
5
µJ
-0.3 to 5.5
V
10
mA
1.25
W
-65 to +150 ℃
-40 to +150 ℃
300
℃
Note : All voltages are with respect to pin 5, all currents are positive into the specified terminal.
Pin Connection (top view)
COMP
VFB
ISENSE
RT/CT
VREF
VCC
OUTPUT
GROUND
Pin Functions
No Function Description
1 COMP This pin is the Error Amplifier output and is made available for loop compensation.
2 VFB
This is the inverting input of the Error Amplifier. It is normally connected to the switching
power supply output through a resistor divider.
3 ISENSE
A voltage proportional to inductor current is connected to this input. The PWM uses this
information to terminate the output switch conduction.
4 RT/CT
The oscillator frequency and maximum output duty cycle are programmed by connecting
resistor RT to VREF and capacitor CT to ground. Operation to 500kHz is possible.
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 VCC
This pin is the positive supply of the control IC.
8 VREF
This is the reference output. It provides charging current for capacitor CT through resistor RT.
Thermal Data
Symbol
Description
Rth, j-amb
Thermal Resistance, junction to ambient
Value
100
Unit
℃/W
PL384XAP8
CYStek Product Specification