- 您现在的位置：买卖IC网 > PDF目录178069 > LM2576 (ON SEMICONDUCTOR) 3.0 A, 15 V, Step-Down Switching Regulator(3.0A,15V,降压型开关稳压器) PDF资料下载
参数资料
| 型号： | LM2576 |
| 厂商： | ON SEMICONDUCTOR |
| 英文描述： | 3.0 A, 15 V, Step-Down Switching Regulator(3.0A,15V,降压型开关稳压器) |
| 中文描述： | 3.0甲，15 V的，降压型开关稳压器（3.0A的，15V的，降压型开关稳压器） |
| 文件页数： | 14/28页 |
| 文件大小： | 275K |
| 代理商： | LM2576 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
LM2576
http://onsemi.com
21
Figure 32. Undervoltage Lockout Circuit for
Buck Converter
R2
10 k
Z1
1N5242B
R1
10 k
Q1
2N3904
R3
47 k
Vth ≈ 13 V
Cin
100
mF
LM2576XX
1
3
5GN
D
ON/OFF
+Vin
NOTE: This picture does not show the complete circuit.
The following formula is used to obtain the peak inductor
current:
where ton +
|V
O
|
V
in )
|V
O
|
x
1.0
fosc
, and fosc + 52 kHz.
I
peak [
I
Load
(V
in )
|V
O
|)
V
in
)
V
in
xton
2L
1
Under normal continuous inductor current operating
conditions, the worst case occurs when Vin is minimal.
Figure 33. Undervoltage Lockout Circuit for
BuckBoost Converter
R2
15 k
Z1
1N5242B
R1
15 k
Q1
2N3904
R3
47 k
Vth ≈ 13 V
Cin
100
mF
LM2576XX
1
3
5GN
D
ON/OFF
+Vin
Vout
NOTE: This picture does not show the complete circuit.
Adjustable Output, LowRipple Power Supply
A 3.0 A output current capability power supply that
features an adjustable output voltage is shown in Figure 34.
This regulator delivers 3.0 A into 1.2 V to 35 V output.
The input voltage ranges from roughly 3.0 V to 40 V. In order
to achieve a 10 or more times reduction of output ripple, an
additional LC filter is included in this circuit.
Figure 34. 1.2 to 35 V Adjustable 3.0 A Power Supply with Low Output Ripple
D1
1N5822
L1
150
mH
Output
2
4
Feedback
R2
50 k
R1
1.21 k
L2
20
mH
Output
Voltage
1.2 to 35 V @ 3.0 A
Optional Output
Ripple Filter
40 V Max
Unregulated
DC Input
Cout
2200
mF
C1
100
mF
Cin
100
mF
LM2574Adj
1
5
3ON/OFF
GN
D
+Vin
相关PDF资料 |
PDF描述 |
|---|---|
| LM2742 | N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages |
| LM2931A | 100 mA, Adjustable Output, LDO Voltage Regulator with 60 V Load Dump Protection(100mA，可调输出，带有60V负载保护的低压差稳压器) |
| LM2931 | 100 mA, Adjustable Output, LDO Voltage Regulator with 60 V Load Dump Protection(100mA，可调输出，带有60V负载保护的低压差稳压器) |
| LM293 | Low Offset Voltage Dual Comparators(低失调电压，2比较器) |
| LM311H | COMPARATOR, 10000 uV OFFSET-MAX, 200 ns RESPONSE TIME, MBCY8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2576/D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Easy Switcher? 3.0 A Step-Down Voltage Regulator |
| LM2576_05 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:52kHz Simple 3A Buck Regulator |
| LM2576_06 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:3.0 A, 15 V, Step−Down Switching Regulator |
| LM2576_11 | 制造商:HTC 制造商全称:HTC Korea TAEJIN Technology Co. 功能描述:3A, 52kHz, Step-Down Switching Regulator |
| LM2576_12 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:EASY SWITCHERER 3.0 A STEPa??DOWN VOLTAGE REGULATOR |
发布紧急采购，3分钟左右您将得到回复。