PL2576-XXXF5 Datasheet, PDF (2/10 Pages) Cystech Electonics Corp. – Simple Switcher 3A Step- Down Voltage Regulator

Spec. No. : C543F5
CYStech Electronics Corp. Issued Date : 2004.02.27
Revised Date :
Page No. : 2/10
Typical Application (Fixed Output Voltage Version)
7V-40V unregulated
DC input
+VIN
1
+ _Cin
100^μF
Feedback
PL2576-5.0
4
Output
L1
2
3 GND 5 _ON/OFF
100^μH
D1
1N5822
+5V regulated output
3A load
+ _Cout
1000^μF
Block Diagram
Figure. 1
Unregulated
DC Input
Vin
1
Feedback
4
+
Cin
Internal
Regulator
Fixed Gain
R2 _{Error Amp}
Comparator
1.0k
R1
ON / OFF
Driver
3 Amp
Switch
1.23V
band-gap
reference
52kHz
Oscillator
Reset
Thermal Current
Shutdown Limit
ON/OFF
5
Output
2
GND
3
L1
Vout
Cout
+
L
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
Range
-40℃≤TA≤125℃
Output Voltage
3.3
5.0
12
15
PL2576-3.3F5 PL2576-5.0F5 PL2576-12F5 PL2576-15F5
ADJ
Package
Type
PL2576-ADJF5 TO-263-5L
PL2576-XXXF5
CYStek Product Specification