- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄240256 > LM2575M-3.3/NOPB (NATIONAL SEMICONDUCTOR CORP) 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDSO24 PDF資料下載
參數(shù)資料
| 型號(hào)： | LM2575M-3.3/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, PDSO24 |
| 封裝： | SO-24 |
| 文件頁數(shù)： | 1/40頁 |
| 文件大?。?/td> | 917K |
| 代理商： | LM2575M-3.3/NOPB |
當(dāng)前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁
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-regualtor 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.
May 1999
LM1575/LM2575/LM2575HV
Series
SIMPLE
SWITCHER
1A
Step-Down
V
oltage
Regulator
2001 National Semiconductor Corporation
DS011475
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2575T-3.3T | 3.2 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, PSFM5 |
| LMZ14202EXTTZX-ADJ | SWITCHING REGULATOR, PSSO7 |
| LSN-1/10-D3 | 1-OUTPUT 10 W DC-DC REG PWR SUPPLY MODULE |
| LSN-1.8/10-D3 | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| LSN-1.2/10-D3 | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2575M-5.0 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)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(fēng)格:SMD/SMT |
| LM2575M-5.0/LB03 | 制造商:Texas Instruments 功能描述: |
| LM2575M-5.0/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)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(fēng)格:SMD/SMT |
| LM2575M50 | 制造商:Texas Instruments 功能描述:SWITCHING REG 1A 5.0V SMD 2575 |
| LM2575M-ADJ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)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(fēng)格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。