Spec. No. : C543F5
Issued Date : 2004.02.27
Revised Date :
CYStech Electronics Corp.
Page No. : 2/10
Typical Application (Fixed Output Voltage Version)
7V-40V unregulated
DC input
Feedback
+VIN
1
+5V regulated output
3A load
4
L1
PL2576-5.0
Output
2
μ
100 H
+
+
Cin
D1
Cout
3 GND 5
ON/OFF
μ
100 F
1N5822
μ
1000 F
Figure. 1
Block Diagram
Vin
Unregulated
DC Input
ON/OFF
Internal
Regulator
1
5
ON / OFF
Feedback
4
+
Cin
Fixed Gain
Error Amp
R2
Comparator
3 Amp
Switch
Driver
1.0k
R1
Vout
L1
Output
GND
2
3
Cout
Current
Limit
Thermal
Reset
+
1.23V
52kHz
L
Shutdown
band-gap
reference
Oscillator
D1
O
A
D
3.3V, R2=1.7k
5V, R2=3.1k
12V, R2=8.84k
15V, R2=11.3k
For Adjustable version, R1=open, R2=0
Ordering Information
Temperature
Output Voltage
12
Package
Type
Range
3.3
5.0
15
ADJ
-40℃≤TA≤125℃
PL2576-3.3F5 PL2576-5.0F5 PL2576-12F5 PL2576-15F5 PL2576-ADJF5 TO-263-5L
PL2576-XXXF5
CYStek Product Specification
CYSTEKEC [ CYSTECH ELECTONICS CORP. ]
