LM3100 Datasheet PDF - National Semiconductor
Part Number | LM3100 | |
Description | Voltage Regulator | |
Manufacturers | National Semiconductor | |
Logo | ||
There is a preview and LM3100 download ( pdf file ) link at the bottom of this page. Total 15 Pages |
Preview 1 page No Preview Available ! www.DataSheet4U.com
February 2006
LM3100
SIMPLE SWITCHER® Synchronous 1MHz 1.5A
Step-Down Voltage Regulator
General Description
The LM3100 Synchronously Rectified Buck Converter fea-
tures all functions needed to implement a highly efficient,
cost effective buck regulator capable of supplying 1.5A to
loads with voltages as low as 0.8V. Dual 40V N-Channel
synchronous MOSFET switches allow for low external com-
ponent thus reducing complexity and minimizing board
space. The LM3100 is designed to work exceptionally well
with ceramic and other very low ESR output capacitors. The
Constant ON-Time (COT) regulation scheme requires no
loop compensation, results in fast load transient response,
and simplifies circuit implementation. Through the use of a
unique design the regulator does not rely on output capacitor
ESR for stability, as do most other COT regulators. The
operating frequency remains nearly constant with line and
load variations due to the inverse relationship between the
input voltage and the on-time. The oprating frequency can
be externally programmed up to 1MHz. Protection features
include VCC under-voltage lockout, thermal shutdown and
gate drive under-voltage lockout. The part is available in a
thermally enhanced eTSSOP-20 package
Features
n Input voltage range 4.5V - 36V
n 1.5A output current
n 0.8V, ±1.5% reference
n Integrated 40V, dual N-Channel buck synchronous
switches
n Low component count and small solution size
n No loop compensation required
n Ultra-fast transient response
n Stable with ceramic and other low ESR capacitors
n Programmable switching frequency up to 1MHz
n Max. duty cycle limited during start-up
n Valley current limit
n Precision Internal Reference for adjustable output
voltage down to 0.8V
n Thermal shutdown
n Thermally enhanced eTSSOP-20 package
Typical Applications
n 5VDC, 12VDC, 24VDC, 12VAC, and 24VAC systems
n Embedded Systems
n Industrial Controls
n Automotive Telematics and Body Electronics
n Point of Load Regulators
n Storage Systems
n Broadband Infrastructure
n Direct Conversion from 2/3/4 Cell Lithium Batteries
Systems
Typical Application
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation
© 2006 National Semiconductor Corporation DS201747
DataSheet4 U .com
20174702
www.national.com
|
|
www.DataSheet4U.com
Electrical Charateristics Specifications with standard type are for TJ = 25˚C only; limits in boldface type apply
over the full Operating Junction Temperature (TJ) range. Minimum and Maximum limits are guaranteed through test, design, or
statistical correlation. Typical values represent the most likely parametric norm at TJ = 25˚C, and are provided for reference
purposes only. Unless otherwise stated the following conditions apply: VIN = 18V, VOUT = 3.3V. (Continued)
Symbol
TSD-HYS
Parameter
Thermal shutdown temperature
hysteresis
Conditions
TJ falling
Min Typ Max Units
20 ˚C
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device
is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
Note 3: θJC measurements are performed in general accordance with Mil-Std 883B, Method 1012.1 and utilizes the copper heat sink technique. Copper Heat Sink
@ 60˚C.
Note 4: VCC provides self bias for the internal gate drive and control circuits. Device thermal limitations limit external loading.
DataSheet4 U .com
5 www.national.com
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for LM3100 electronic component. |
Information | Total 15 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ LM3100.PDF Datasheet ] |
Share Link :
Electronic Components Distributor
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
Part Number | Description | MFRS |
LM310 | The function is Voltage Follower. National Semiconductor | |
LM3100 | The function is LM3100 SIMPLE SWITCHER Synchronous 1MHz 1.5A Step-Down Voltage Regulator (Rev. G). Texas Instruments | |
LM3100 | The function is Voltage Regulator. National Semiconductor | |
Semiconductors commonly used in industry:
1N4148 |  
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
LM31
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA |