參數(shù)資料
型號： LM2575T-012G
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, SFM5
封裝： LEAD FREE, CASE 314D-04, TO-220, 5 PIN
文件頁數(shù)： 15/28頁
文件大?。?/td> 492K
代理商： LM2575T-012G
LM2575, NCV2575
http://onsemi.com
22
Figure 32. Undervoltage Lockout Circuit for
BuckBoost Converter
R2
15 k
Z1
1N5242B
R1
15 k
Q1
2N3904
R3
68 k
Vth ≈ 13 V
Cin
100
mF
LM25755.0
1
3
5
GND
ON/OFF
+Vin
Vout = -5.0 V
NOTE: This picture does not show the complete circuit.
Adjustable Output, LowRipple Power Supply
A 1.0 A output current capability power supply that
features an adjustable output voltage is shown in Figure 33.
This regulator delivers 1.0 A into 1.2 V to 35 V output.
The input voltage ranges from roughly 8.0 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 33. Adjustable Power Supply with Low Ripple Voltage
D1
1N5819
L1
150
mH
Output
2
4
Feedback
R2
50 k
R1
1.1 k
L2
20
mH
Regulated
Output Voltage
1.2 V to 35 V @1.0 A
Optional Output
Ripple Filter
Unregulated
DC Input
+
Cout
2200
mF
C1
100
mF
Cin
100
mF
/50 V
LM2575Adj
1
5
3ON/OFF
GND
+Vin
R
,THERMAL
RESIST
ANCE
JAθ JUNCTION‐T
O‐AIR
(
C/W)
°
30
40
50
60
70
80
1.0
1.5
2.0
2.5
3.0
3.5
010
20
30
25
15
5.0
L, LENGTH OF COPPER (mm)
Minimum
Size Pad
2.0 oz. Copper
L
Free Air
Mounted
Vertically
P
D
,MAXIMUM
POWER
DISSIP
A
TION
(W)
Figure 34. D2PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
PD(max) for TA = 50°C
RqJA
相關PDF資料
PDF描述
LM2577K-12/883 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, MBFM2
LM2577KADJ/883 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, MBCY4
LM2577K-15/883 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, MBFM2
LM2633MTDX/NOPB SWITCHING CONTROLLER, 275 kHz SWITCHING FREQ-MAX, PDSO48
LM2635MX/NOPB SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PDSO20
相關代理商/技術參數(shù)
參數(shù)描述
LM2575T-015 功能描述:直流/直流開關調節(jié)器 15V 1A Buck PWM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
LM2575T-015G 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:1.0 A, Adjustable Output Voltage, Step−Down Switching Regulator
LM2575T12 制造商:Semtech 功能描述:_
LM2575T-12 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
LM2575T-12 LF03 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 4V to 40V 5-Pin(5+Tab) TO-220 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Down 4V to 40V 5-Pin(5+Tab) TO-220
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