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參數(shù)資料
| 型號(hào)： | LM2575-15IN |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Precision Chopper-Stabilized Operational Amplifier 8-SOIC -40 to 125 |
| 中文描述： | 1 -一種簡(jiǎn)易降壓開(kāi)關(guān)穩(wěn)壓 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大小： | 195K |
| 代理商： | LM2575-15IN |
www.ti.com
APPLICATION INFORMATION
Layout Guidelines
With any switching regulator, circuit layout plays an important role in circuit performance. Wiring and parasitic
inductances, as well as stray capacitances, are subjected to rapidly switching currents, which can result in
unwanted voltage transients. To minimize inductance and ground loops, the length of the leads indicated by
heavy lines should be minimized. Optimal results can be achieved by single-point grounding (see
Figure 2
) or by
ground-plane construction. For the same reasons, the two programming resistors used in the adjustable version
should be located as close as possible to the regulator to keep the sensitive feedback wiring short.
LM2575-xx
Fixed Output
C
IN
100
μ
F
+
+V
IN
1
3
GND
5
D1
2
L1
330
μ
H
C
OUT
330
μ
F
+
4
L
O
A
D
V
OUT
V
IN
Unregulated
DC Input
C
IN
= 100
μ
F, Aluminum Electrolytic
C
OUT
= 330
μ
F, Aluminum Electrolytic
D1 = Schottky
L1 = 330
μ
H
Fixed Output Voltage Versions
LM2575
(ADJ)
C
IN
100
μ
F
+
+V
IN
1
3
GND
5
ON/OFF
D1
11DQ06
OUTPUT
2
L1
330
μ
H
C
OUT
330
μ
F
+
FEEDBACK
4
L
O
A
D
V
OUT
7-V to 60-V
Unregulated
DC Input
Adjustable Output Voltage Versions
V
OUT
= V
REF
(1 + R2/R1) = 5 V
Where,
V
REF
= 1.23 V
R1 = 2 k
R2 = 6.12 k
R2
R1
ON/OFF
OUTPUT
FEEDBACK
LM2575
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATOR
SLVS569D–JANUARY 2005–REVISED JULY 2005
A.
Pin numbers are for the KTT (TO-263) package.
Figure 2. Test Circuit and Layout Guidelines
7
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2575-15T | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Easy Switcher 1.0 A Step-Down Voltage Regulator(389.50 k) |
| LM2575-15TA5R | 制造商:FCI 制造商全稱(chēng):First Components International 功能描述:1.0A Step - Down Voltage Switching Regulators 1A output current |
| LM2575-15TA5T | 制造商:FCI 制造商全稱(chēng):First Components International 功能描述:1.0A Step - Down Voltage Switching Regulators 1A output current |
| LM2575-15TB5BT | 制造商:FCI 制造商全稱(chēng):First Components International 功能描述:1.0A Step - Down Voltage Switching Regulators 1A output current |
| LM2575-15TB5T | 制造商:FCI 制造商全稱(chēng):First Components International 功能描述:1.0A Step - Down Voltage Switching Regulators 1A output current |
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