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LM20124MHX/NOPB PDF预览

LM20124MHX/NOPB

更新时间: 2024-09-24 01:07:35
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德州仪器 - TI /
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描述
4A, 1MHz PowerWise® Synchronous Buck Regulator

LM20124MHX/NOPB 数据手册

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LM20124, LM20124-Q1  
www.ti.com  
SNVS507F OCTOBER 2007REVISED MARCH 2013  
4A, 1MHz PowerWise® Synchronous Buck Regulator  
Check for Samples: LM20124, LM20124-Q1  
1
FEATURES  
DESCRIPTION  
2
LM20124-Q1 is AEC-Q100 qualified and  
The LM20124 is a full featured 1 MHz synchronous  
buck regulator capable of delivering up to 4A of  
continuous output current. The current mode control  
loop can be compensated to be stable with virtually  
any type of output capacitor. For most cases,  
compensating the device only requires two external  
components, providing maximum flexibility and ease  
of use. The device is optimized to work over the input  
voltage range of 2.95V to 5.5V making it suited for a  
wide variety of low voltage systems.  
manufactured on an Automotive Grade Flow  
Input voltage range 2.95V to 5.5V  
Accurate current limit minimizes inductor size  
96% efficiency at 1 MHz switching frequency  
32 mintegrated FET switches  
Starts up into pre-biased loads  
Output voltage tracking  
Peak current mode control  
The device features internal over voltage protection  
(OVP) and over current protection (OCP) circuits for  
increased system reliability. A precision enable pin  
and integrated UVLO allows the turn-on of the device  
to be tightly controlled and sequenced. Start-up  
inrush currents are limited by both an internally fixed  
and externally adjustable Soft-Start circuit. Fault  
detection and supply sequencing is possible with the  
integrated power good circuit.  
Adjustable output voltage down to 0.8V  
Adjustable Soft-Start with external capacitor  
Precision enable pin with hysteresis  
Integrated OVP, UVLO, power good and  
thermal shutdown  
TSSOP 16 pin exposed pad package  
APPLICATIONS  
The LM20124 is designed to work well in multi-rail  
power supply architectures. The output voltage of the  
device can be configured to track a higher voltage rail  
using the SS/TRK pin. If the output of the LM20124 is  
pre-biased at startup it will not sink current to pull the  
output low until the internal soft-start ramp exceeds  
the voltage at the feedback pin.  
Simple to design, high efficiency point of load  
regulation from a 5V or 3.3V bus  
High Performance DSPs, FPGAs, ASICs and  
microprocessors  
Broadband, Networking and Optical  
Communications Infrastructure  
The LM20124 is offered in a 16-pin TSSOP package  
with an exposed pad that can be soldered to the  
PCB, eliminating the need for bulky heatsinks.  
Typical Application Circuit  
L
LM20124  
V
OUT  
SW  
FB  
V
IN  
PVIN  
R
R
FB1  
EN  
C
IN  
R
F
C
OUT  
FB2  
AVIN  
COMP  
PGOOD  
VCC  
C
F
C
VCC  
SS/TRK  
AGND  
R
C1  
PGND  
C
SS  
(optional)  
C
C1  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007–2013, Texas Instruments Incorporated  

LM20124MHX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM20124MH/NOPB TI

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4A, 1MHz PowerWise® Synchronous Buck Regulat
LM20124MHE/NOPB TI

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4A, 1MHz PowerWise® Synchronous Buck Regulat

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