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PL384XAQ8 Datasheet(PDF) 2 Page - Cystech Electonics Corp.

Part No. PL384XAQ8
Description  High Performance Current Mode PWM Controllers
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Maker  CYSTEKEC [Cystech Electonics Corp.]
Homepage  http://www.cystekec.com
Logo CYSTEKEC - Cystech Electonics Corp.

PL384XAQ8 Datasheet(HTML) 2 Page - Cystech Electonics Corp.

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CYStech Electronics Corp.
Spec. No. : C510Q8-A
Issued Date : 2003.08.12
Revised Date :
Page No. : 2/15
PL384XAQ8
CYStek Product Specification
Absolute Maximum Ratings
Symbol Parameter
Value
Unit
VI
Supply Voltage (low impedance source)
30
V
VI
Supply Voltage (Ii<30mA)
Self Limiting
IO
Output Current
±
1
A
EO
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℃
1.25
W
Tstg
Storage Temperature Range
-65 to +150
TJ
Junction Operating Temperature
-40 to +150
TL
Lead Temperature (soldering 10s)
300
Note : All voltages are with respect to pin 5, all currents are positive into the specified terminal.
Pin Connection (top view)
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
Value
Unit
Rth, j-amb
Thermal Resistance, junction to ambient
150
/W
COMP
VFB
ISENSE
RT/CT
VREF
VCC
OUTPUT
GROUND


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