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参数资料
| 型号： | LM1572MTCX-ADJ/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | TSSOP-16 |
| 文件页数： | 1/17页 |
| 文件大小： | 583K |
| 代理商： | LM1572MTCX-ADJ/NOPB |
LM1572
1.5A, 500kHz Step-down Voltage Regulator
General Description
The LM1572 is a 500kHz step-down (buck) switching volt-
age regulator capable of driving up to 1.5A in to a load while
occupying a very small PCB area. Current Mode Control
results in superior transient response and regulation over a
wider range of operating conditions. National’s advanced
analog bipolar, CMOS plus DMOS process enables high
efficiency at high switching frequency, and the internal
150m
MOSFET switch provides more power from a
smaller package.
The LM1572 has programmable soft-start and frequency
foldback to limit the inrush current, and a TTL compatible
shutdown for easy sequencing. It draws 2.3mA of supply
current in standby mode, and only 26A in shutdown mode.
The LM1572 is available in a TSSOP-16 package with an
adjustable output or fixed outputs of 5V and 3.3V. The ad-
justable version can be set between 2.42V and 5V.
Features
n
500kHz clock allows small, surface mount components
n
150m
MOSFET switch
n
Guaranteed load current of 1.5A
n
Current mode control
n
Programmable soft-start
n
Internally set slope compensation
n
TTL compatible shutdown
n
Fixed 5V, 3.3V or adjustable output
n
Low shutdown supply current of 26A
n
Cycle-by-cycle current limit
n
Short-circuit protection and thermal protection
n
TSSOP-16 package
Applications
n
LCD Monitors and TVs
n
Set-Top Boxes
n
Cable Modems
n
Down conversion from 12V in local/distributed systems
Typical Applications (Fixed/Adjustable Voltage Parts)
20033313
July 2002
LM1572
1.5A,
500kHz
Step-down
V
oltage
Regulator
2002 National Semiconductor Corporation
DS200333
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM1572MTCX-5.0/NOPB | 3.2 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM1572MTCX-3.3/NOPB | 3.2 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM1572MTC-3.3/NOPB | 3.2 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM1572MTC-ADJ/NOPB | 3.2 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM1575J-ADJ/883 | 3 A SWITCHING REGULATOR, 58 kHz SWITCHING FREQ-MAX, CDIP16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM1575 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ 1A Step-Down Voltage Regulator |
| LM1575_07 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ 1A Step-Down Voltage Regulator |
| LM1575-12 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:SIMPLE SWITCHER 1A STEP-DOWN VOLTAGE REGULATOR |
| LM1575-15 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:SIMPLE SWITCHER(TM) 1A STEP-DOWN VOLTAGE REGULATOR |
| LM1575-5.0AK | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Mode SMPS Controller |
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