LM2576TV-ADJ(2004) 查看數據表（PDF） - ON Semiconductor
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LM2576TV-ADJ Datasheet PDF : 26 Pages
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Unregulated
DC Input
Cin
LM2576
Typical Application (Fixed Output Voltage Versions)
7.0 V − 40 V
+Vin
Unregulated
DC Input
1
Cin
100 mF
Feedback
LM2576
4
L1
100 mH
Output
2
3 GN 5 ON/OFF
D
D1
1N5822
5.0 V Regulated
Output 3.0 A Load
Cout
1000 mF
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
(W)
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 W
Output
2
GND
3
L1
D1
Regulated
Output
Vout
Cout
Load
This device contains 162 active transistors.
Figure 1. Block Diagram and Typical Application
MAXIMUM RATINGS
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
Thermal Resistance, Junction−to−Case
Storage Temperature Range
Minimum ESD Rating (Human Body Model: C = 100 pF, R = 1.5 kW)
PD
RqJA
RqJC
PD
RqJA
RqJC
Tstg
−
Internally Limited
65
5.0
Internally Limited
70
5.0
−65 to +150
2.0
W
°C/W
°C/W
W
°C/W
°C/W
°C
kV
Lead Temperature (Soldering, 10 seconds)
−
260
°C
Maximum Junction Temperature
TJ
150
°C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
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