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| TL2575 Datasheet, PDF (9/23 Pages) Texas Instruments – 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS | |||
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www.ti.com
VIN
Unregulated
DC Input
TL2575, TL2575HV
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638 â MAY 2006
TEST CIRCUITS
Fixed-Output Voltage
+VIN
1
TL2575-xx
Fixed Output
FEEDBACK
4
OUTPUT
2
L1
330 µH
VOUT
+ CIN
100 µF
3 GND
5 ON/OFF
D1
L
+
COUT
330 µF
O
A
D
CIN = 100 µF, Aluminum Electrolytic
COUT = 330 µF, Aluminum Electrolytic
D1 = Schottky
L1 = 330 µH (for 5-V VIN with 3.3-V VOUT, use 100 mH)
7-V to 40-V
Unregulated
DC Input
Adjustable-Output Voltage
+VIN
1
TL2575
(ADJ)
FEEDBACK
4
OUTPUT
2
L1
330 µH
+
CIN
100 µF
3 GND
5 ON/OFF
D1
11DQ06
+
COUT
330 µF
VOUT
R2
L
O
A
D
R1
VOUT = VREF(1 + R2/R1) = 5 V
VREF = 1.23 V
R1 = 2 kW
R2 = 6.12 kW
A. Pin numbers are for the KTT (TO-263) package.
Figure 2. Test Circuits and Layout Guidelines
Submit Documentation Feedback
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