參數(shù)資料
型號(hào)： LM2575T-ADJFLOWLB03/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5
封裝： LEAD FREE, TO-220, 5 PIN
文件頁(yè)數(shù)： 1/26頁(yè)
文件大?。?/td> 722K
代理商： LM2575T-ADJFLOWLB03/NOPB
LM1575/LM2575/LM2575HV
SIMPLE SWITCHER 1A Step-Down Voltage Regulator
General Description
The LM2575 series of regulators are monolithic integrated
circuits that provide all the active functions for a step-down
(buck) switching regulator, capable of driving a 1A load with
excellent line and load regulation. These devices are avail-
able in fixed output voltages of 3.3V, 5V, 12V, 15V, and an
adjustable output version.
Requiring a minimum number of external components, these
regulators are simple to use and include internal frequency
compensation and a fixed-frequency oscillator.
The LM2575 series offers a high-efficiency replacement for
popular three-terminal linear regulators. It substantially re-
duces the size of the heat sink, and in many cases no heat
sink is required.
A standard series of inductors optimized for use with the
LM2575 are available from several different manufacturers.
This feature greatly simplifies the design of switch-mode
power supplies.
Other features include a guaranteed ±4% tolerance on out-
put voltage within specified input voltages and output load
conditions, and ±10% on the oscillator frequency. External
shutdown is included, featuring 50 A (typical) standby cur-
rent. The output switch includes cycle-by-cycle current limit-
ing, as well as thermal shutdown for full protection under
fault conditions.
Features
n
3.3V, 5V, 12V, 15V, and adjustable output versions
n
Adjustable version output voltage range,
1.23V to 37V (57V for HV version) ±4% max over
line and load conditions
n
Guaranteed 1A output current
n
Wide input voltage range, 40V up to 60V for HV version
n
Requires only 4 external components
n
52 kHz fixed frequency internal oscillator
n
TTL shutdown capability, low power standby mode
n
High efficiency
n
Uses readily available standard inductors
n
Thermal shutdown and current limit protection
n
P
+ Product Enhancement tested
Applications
n
Simple high-efficiency step-down (buck) regulator
n
Efficient pre-regulator for linear regulators
n
On-card switching regulators
n
Positive to negative converter (Buck-Boost)
Typical Application (Fixed Output Voltage
Versions)
01147501
Note: Pin numbers are for the TO-220 package.
SIMPLE SWITCHER is a registered trademark of National Semiconductor Corporation.
January 2004
LM1575/LM2575/LM2575HV
Series
SIMPLE
SWITCHER
1A
Step-Down
V
oltage
Regulator
2004 National Semiconductor Corporation
DS011475
www.national.com
相關(guān)PDF資料
PDF描述
LM2575IKC 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5
LM2575-05IKC 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5
LM2575-33IKC 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5
LM2575-12IKTGR 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5
LM2575-15IKC 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2575T-ADJG 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 1A 1.23-37V ADJ Buck PWM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
LM2575T-ADJG 制造商:ON Semiconductor 功能描述:IC STEP-DOWN REGULATOR TO-220-5 制造商:ON Semiconductor 功能描述:IC, STEP-DOWN REGULATOR, TO-220-5
LM2575T-ADJ-H 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller
LM2575TADJLF02 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 4V to 40V 5-Pin(5+Tab) TO-220 Rail
LM2575T-ADJ-V 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller
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