LM2575-ADJ Ver la hoja de datos (PDF) - Motorola => Freescale
Número de pieza
componentes Descripción
Fabricante
LM2575-ADJ Datasheet PDF : 28 Pages
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Unregulated
DC Input
Cin
LM2575
Figure 1. Block Diagram and Typical Application
Typical Application (Fixed Output Voltage Versions)
7.0 V – 40 V
+Vin
Unregulated
DC Input
1
Cin
100 µF
Feedback
LM2575
4
L1
330 µH
Output
2
3 Gnd 5 ON/OFF
D1
1N5819
5.0 V Regulated
Output 1.0 A Load
Cout
330 µF
Representative Block Diagram and Typical Application
+Vin
1
4
Feedback
3.1 V Internal
Regulator
ON/OFF
R2 Fixed Gain
Error Amplifier Comparator
R1
1.0 k Freq
Shift
18 kHz
1.235 V
Band–Gap
Reference
52 kHz
Oscillator
Current
Limit
Latch
Reset
Driver
1.0 Amp
Switch
Thermal
Shutdown
ON/OFF
5
Output
R2
Voltage Versions
(Ω)
3.3 V
1.7 k
5.0 V
3.1 k
12 V
8.84 k
15 V
11.3 k
For adjustable version
R1 = open, R2 = 0 Ω
Output
2
Gnd
3
L1
D1
Regulated
Output
Vout
Cout
Load
This device contains 162 active transistors.
ABSOLUTE MAXIMUM RATINGS (Absolute Maximum Ratings indicate limits beyond
which damage to the device may occur.)
Rating
Symbol
Value
Unit
Maximum Supply Voltage
ON/OFF Pin Input Voltage
Output Voltage to Ground (Steady–State)
Vin
45
V
–
–0.3 V ≤ V ≤ +Vin
V
–
–1.0
V
Power Dissipation
Case 314B and 314D (TO–220, 5–Lead)
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 936A (D2PAK)
Thermal Resistance, Junction–to–Ambient
(Figure 34)
Thermal Resistance, Junction–to–Case
Storage Temperature Range
Minimum ESD Rating (Human Body Model: C
= 100 pF, R = 1.5 kΩ)
PD
RθJA
RθJC
PD
RθJA
RθJC
Tstg
–
Internally Limited
65
5.0
Internally Limited
70
5.0
–65 to +150
3.0
W
°C/W
°C/W
W
°C/W
°C/W
°C
kV
Lead Temperature (Soldering, 10 s)
–
260
°C
Maximum Junction Temperature
TJ
150
°C
NOTE: ESD data available upon request.
2
MOTOROLA ANALOG IC DEVICE DATA
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