Datasheet
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TEST CIRCUITS
TL2575-xx
Fixed Output
C
IN
100 µF
+
+V
IN
1
3 GND 5
D1
2
L1
330 µH
C
OUT
330 µF
+
4
L
O
A
D
V
OUT
V
IN
Unregulated
DC Input
C
IN
= 100 µF, Aluminum Electrolytic
C
OUT
= 330 µF, Aluminum Electrolytic
D1 = Schottky
L1 = 330 µH (for 5-V V
IN
with 3.3-V V
OUT
, use 100 mH)
Fixed-Output Voltage
TL2575
(ADJ)
C
IN
100 µF
+
+V
IN
1
3 GND 5 ON/OFF
D1
11DQ06
OUTPUT
2
L1
330 µH
C
OUT
330 µF
+
FEEDBACK
4
L
O
A
D
V
OUT
7-V to 40-V
Unregulated
DC Input
Adjustable-Output Voltage
V
OUT
= V
REF
(1 + R2/R1) = 5 V
V
REF
= 1.23 V
R1 = 2 kW
R2 = 6.12 kW
R2
R1
ON/OFF
OUTPUT
FEEDBACK
TL2575 , TL2575HV
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007
A. Pin numbers are for the KTT (TO-263) package.
Figure 2. Test Circuits and Layout Guidelines
9
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