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参数资料
| 型号： | LM2576T-12G |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 稳压器 |
| 英文描述： | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5 |
| 封装： | LEAD FREE, TO-220, 5 PIN |
| 文件页数： | 12/28页 |
| 文件大小： | 275K |
| 代理商： | LM2576T-12G |
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LM2576
http://onsemi.com
2
Figure 1. Block Diagram and Typical Application
7.0 V 40 V
Unregulated
DC Input
L1
100
mH
GN
D
+Vin
1
Cin
100
mF
3ON/OFF
5
Output
2
Feedback
4
D1
1N5822
Cout
1000
mF
Typical Application (Fixed Output Voltage Versions)
Representative Block Diagram and Typical Application
Unregulated
DC Input
+Vin
1
Cout
Feedback
4
Cin
L1
D1
R2
R1
1.0 k
Output
2
GND
3
ON/OFF
5
Reset
Latch
Thermal
Shutdown
52 kHz
Oscillator
1.235 V
BandGap
Reference
Freq
Shift
18 kHz
Comparator
Fixed Gain
Error Amplifier
Current
Limit
Driver
1.0 Amp
Switch
ON/OFF
3.1 V Internal
Regulator
Regulated
Output
Vout
Load
Output
Voltage Versions
3.3 V
5.0 V
12 V
15 V
R2
(
W)
1.7 k
3.1 k
8.84 k
11.3 k
For adjustable version
R1 = open, R2 = 0
W
LM2576
5.0 V Regulated
Output 3.0 A Load
This device contains 162 active transistors.
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Maximum Supply Voltage
Vin
45
V
ON/OFF Pin Input Voltage
0.3 V
≤ V ≤ +Vin
V
Output Voltage to Ground (SteadyState)
1.0
V
Power Dissipation
Case 314B and 314D (TO220, 5Lead)
PD
Internally Limited
W
Thermal Resistance, JunctiontoAmbient
RqJA
65
°C/W
Thermal Resistance, JunctiontoCase
RqJC
5.0
°C/W
Case 936A (D2PAK)
PD
Internally Limited
W
Thermal Resistance, JunctiontoAmbient
RqJA
70
°C/W
Thermal Resistance, JunctiontoCase
RqJC
5.0
°C/W
Storage Temperature Range
Tstg
65 to +150
°C
Minimum ESD Rating (Human Body Model: C = 100 pF, R = 1.5 k
W)
2.0
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2576T-12-H | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2576T-12LB03 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Mode SMPS Controller |
| LM2576T-12P | 制造商:National Semiconductor Corporation 功能描述:2576T-12 制造商:Texas Instruments 功能描述:2576T-12 |
| LM2576T-12-V | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2576T-15 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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