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A 3.3V Input Step-Down Converter for CPU Cores
Lower Operating Frequency Improves ICL7660 Voltage-Conversion Efficiency
Programmable Universal Filter Implements C-Message Weighting Function
DS1670 Portable System Controller
Using the Secure Microcontroller Watchdog Timer
Using the High-Speed Microcontroller as a Bootstrap Loader
低ドロップアウト電圧のpFETリニアレギュレータ
軽負荷で効率の高いブーストコンバータ
超低消費電力のデュアル電圧出力DAC
バッテリ充電用電流源として応用可能なブーストDC-DC電圧レギュレータ
FPGAまたはASICへの1-Wire®マスタの組み込み
Inaccuracies of Estimating Remaining Cell Capacity with Voltage Measurements Alone
Recommended ESD Protection and Circuit Placement for the DS2438 in Li-Ion Cell Pack Master
Battery Considerations for Today's Low-Power, Long-Life Solid State Devices
Using Dallas Battery Management ICs with High Voltage Battery Packs
Reverse Compatibility of the DS1721 Digital Temperature Sensor with the DS1621
デュアル電源アナログスイッチをどのように3Vまたは5V単一電源で動作させるかについて
Lithium-Ion Cell Fuel Gauging with Maxim Battery Monitor ICs
Interfacing the DS1620 with a DS5000/8051 Microcontroller
8051マイクロプロセッサのクロックとしてのEconOscillator™の使用
データマルチプレクサでMAX7219またはMAX7221のLED7セグメントディスプレイドライバにカーソルを付加
1-Wireマスター(DS1WM)をARM7プロセッサにインタフェースさせるには
DC-DCスイッチモード電源コントローラで安定化チャージポンプを駆動
Small Message Encryption using SHA Devices
Maxim Digital Monetary Certificates
SHA <U>i</U>Button Secrets and Challenges
Passwords in SHA Authentication
DS1963S SHA 1-Wire API Users Guide
SHA <u>i</u>Button API Overview
<u>i</u>Button&reg;アプリケーションで堅牢な1-Wire&reg;通信を実現するためのソフトウェア手法
Using the DS1808 in Audio Applications
マイクロコントローラ環境における1-Wire&reg;温度センサDS18X20/DS1822とのインタフェース
Using DS1050 Programmable PWMs to Control a DC Motor and an LCD LED Backlight
Using the DS1814 MicroMonitor to Control Microprocessor Resets
Considerations for the DS1847/DS1848 Look-Up Tables
DS1869 Digital Potentiometer Modes of Operation
Interfacing a DS1868 3-Wire Device to a SPI Bus
Adding Nonvolatile SRAM into Embedded Systems
Using Programmable Oscillators to Generate and Control System Clocks
DS1077L EconOscillator Architecture and Online Interactive Frequency Calculator
Monitor Calibration in Fiber Optic Applications
Using the DS1631 Temperature Sensor in DS1621 Applications
1-Wire&reg;製品によるプリント回路基板の識別
DS1847/DS1848 Temperature Coefficient Supplement
Frequency Calculator for the DS1085/DS1085L EconOscillator
Controlling a Variable Voltage Power Supply Using the DS1809 (Pushbutton Control)
Digitally-Controlled Phase Shift Using the DS1669
DS1077 5V EconOscillator Architecture and Online Interactive Frequency Calculator
1-Wire&reg;デバイスによるグローバル識別番号の作成
1-Wire 検索アルゴリズム
Challenge and Response with 1-Wire&reg; SHA Devices
シリアル1-Wire&reg;ラインドライバDS2480Bの使用
Extending 1-Wire&reg; Range with Network Proxies
Sense Resistor Power Dissipation
Networked Temperature Monitoring
3V機器に対応したバッテリ切換え回路
Multiplexing Shutdown Allows Text to be Displayed
GSMおよび900MHz ISMアプリケーション用の超低コスト+30dBm PA
MAX2242 PAを2.4GHzのDECTコードレス電話アプリケーション用に最適化
Methods of Controlling Laser Drivers: POTs and DACs
CDMAアプリケーション用のMAX2206/MAX2208パワーディテクタ
Design Case Study: Designing a Power Supply for a Portable, Wireless Contact Manager
オートトランスレギュレータで12Vを-12Vに反転
MAX1470スーパーヘテロダインレシーバ用の水晶発振器の選び方
既存の設計をTDA5200またはTDA5201からMAX1470スーパーヘテロダインレシーバに変更する方法
LDO Linear Regulator Improves White LED Brightness Matching
Buck/Boost Charge-Pump Regulator Powers White LEDs from a Wide 1.6V to 5.5V Input
A Single SCART Interface for Video
マルチセルから3Vを発生する高効率SEPICスイッチングレギュレータ
SDTV Reconstruction Filter with Adjustable Group Delay
直線性0.05%の低電力3V ADC
MAX3670: Loop-Filter Configuration for the MAX3670 Low-Jitter PLL Reference Clock Generator
Building Dot Matrix Graphic Panels with the MAX6952 and MAX6953 5x7 LED Drivers
Software Control of the MAX6952 and MAX6953 LED Drivers in Graphic Applications
直列接続または並列接続の白色LEDに電力を供給するためのチャージポンプとステップアップDC-DCコンバータのソリューション
Single Supply Sequencer Sequences Negative Voltages\r\n
Design of Graphic Chip and Related Circuitry Power Supplies Using MAX1953 1MHz PWM Step-down Controller
One Megahertz Adaptable Power Supply Meets XENPAK MSA Specification\r\n
+2.7Vで動作する調整不用の傾斜計
Reset Circuit Ensures Valid Supply Voltage
VDDQ Supply for Server DDR Memory Using PWM Step-Down Controller
Simple Change Improves PFM Boost-Controller Efficiency
Compensating for Ideality Factor and Series Resistance Differences between Thermal-Sense Diodes
コンパクトなテレコム用電源の設計
Microcontroller Recognizes Addresses in RS-485 Systems
MAX3274: MAX3274 Optimizes Dual-Rate, Fibre Channel Receivers
Tech. Brief 39: NV SRAM Cross Reference Table
High-Gain Signal Conditioning Circuit for Thin and Thick Film Sensors
Windowed Watchdog Enhances &micro;P Supervisors
負電源可変のDAC駆動チャージポンプ
I&sup2;Cアドレスの競合を軽減する超小型アナログスイッチ
DAC and Op Amp Generate Variable Negative Control Voltage
Simplify Isolated Temperature Sensing With Single Wire Sensors
Fail-Safe, Low-Speed, Variable-Reluctance Sensors
DC-to-DC Converter Combats EMI
High-Side Current Sensor Has Period Output
Selectable-Range Current Loop
Micro Tutorial 1: Understanding DC Electrical Characteristics of Microcontrollers
Methods for Trimming the Power Required in RS-485 Systems
HFAN-02.3.1: Maintaining Average Power and Extinction Ratio, Part 1, Slope Efficiency and Threshold Current
HFAN-02.3.2: Maintaining Average Power and Extinction Ratio, Part 2, MAX3863 Laser Driver and DS1847 Digital Resistor
双方向スイッチを制御するトランスドライバIC
白書2：1-Wire&reg;パブリックドメインキットの使用
白書3：1-Wire SHA-1デバイスはなぜ安全なのか
White Paper 4: Glossary of 1-Wire SHA-1 Terms
白書5：データシートコマンドに対する1-Wire APIの使用
ホストシステムをウェイクアップするIRセンサ/モニタ
HFAN-09.0.3: APON Class A, B, & C Physical Layer Requirements
周波数プランと評価ツール
デュアルモードのセルラ電話におけるMAX2309 PLL分周器の値の最適化
Understanding Single-Ended, Pseudo-Differential and Fully-Differential ADC Inputs
High-Power Boost Converter Switches Modes Automatically and Maintains Light-Load Efficiency
Isolated SLIC supply
コンパクトなインダクタレスブースト回路で白色LEDバイアス電流を安定化
HFAN-02.2.1: Maintaining the Extinction Ratio of Optical Transmitters Using K-Factor Control
Using Ceramic Output Capacitors with the MAX1734 Voltage-Mode Buck Converter
Optimizing Audio Bridged Tied Load Amplifiers
韓国で使用される帯域(1750MHz)のPCS-CDMAトランスミッタアプリケーション用のMAX2361
Amplifier Provides Signal Conditioning for Piezofilm Sensor
Circuit Inverts Temperature-Sensor Output with Accuracy
Phase-Lock Loop Applications Using the MAX9382
Selecting Numeric and Alphanumeric Display Configurations for the MAX6954 and MAX6955 SPI and I&sup2;C LED Display Drivers
Uninterruptible Power Supply for USB Devices
Small Capacitor Improves Efficiency in High-Power CPU Supply
Switching Between Battery and External Power Sources
Using the MAX3157 High-CMR RS-485 Transceivers
Practical Data Acquisition using a Windows&sup1;-based Power Meter\r\n
Temperature Sensor Has One Digital Input and One Digital Output
スペクトラム拡散システムにおけるレシーバ感度方程式
Adding Global Intensity Control to the MAX6956 and MAX6957 Static LED Drivers
Experimenting with the MAX6956 and MAX6957 SPI and I&sup2;C GPIO and LED Display Drivers from a PC
Monitoring a Small Step Change of a DC Voltage
Interface a Multiplexed-Bus Real-Time Clock to a &#181;P With Separate Address and Data Buses
Adding Panel LED Intensity Control to MAX6952 and MAX6953 5x7 Matrix LED Drivers
Simple Current Source Varies the Switching Frequency of a Power Supply for a Digital Still Camera
Adding Global LED Intensity Control to the MAX6954 and MAX6955 LED Drivers
DDR Memory-Termination Supply is Flexible for 2.5V and 1.8V Memory Systems
Direct Interface of the MAX1452/MAX1455 with the MAX1452/MAX1455 Communication Board
Step-by-Step Procedure for Performing Temperature Compensation Using MAX1452 and MAX1455 Evaluation Kit Software
Simple Circuit Boosts a 3V Input and Improves Efficiency
Consider the \"Deboo\" Single-Supply Integrator
Low-Cost AC Supply
Parallel-Port Interface Powers Low Voltage Systems
Power Supply From 4-20mA Transmission Line
Level Translators For SPI&#8482; and I&sup2;C Bus Signals
Current Limited DC-DC Controller Used as Step-Up Step-Down SEPIC Power Supply for USB Devices
A 3.3V Input Step-Down Converter for CPU Cores
Inexpensive Peak Detector Features Droopless Operation
Flyback Transformer Design for MAX1856 SLIC Power Supplies
PFMブーストコンバータに電流モード動作を付加する回路接続
High-Accuracy Current-Sense Amplifier Enables Current Sensing and Current Sharing
HFAN-04.5.1: Measuring Random Jitter on a Digital Sampling Oscilloscope
MAX3861: Configuring the MAX3861 AGC Amp as an SFP Limiting Amplifier with RSSI
シングルバンドとマルチバンドのLNAとダウンコンバータのMAX2538ファミリを用いた設計
Ultra Low Power Reset Generator\r\n
Chip Recorder Customizes Phone Ringer
Electronic Displays Comparison
Maximize Battery Life and Minimize Replacements
Using the MAX7219/7221 to Drive Higher Voltage or Current
市販のトランスによるコンデンサ突入電流制限回路
高効率電圧スプリッタを形成する電圧インバータIC
White Paper 7: Thermochron&reg; Mission Authentication and Security
W-CDMA Power Supply Dramatically Improves Transmit Efficiency
デュアル出力、差動出力の水晶発振器
WCDMAスーパーヘテロダインリファレンスデザイン：V1.0 RFトランシーバの詳細
Pulsed Sensor Extends Battery Life
Tracking Power Supply Has Dual Outputs \r\n
Powering Four White LEDs with High Efficiency Using the MAX1848
DCオフセット電圧が存在する場合のMAX2510 I/Q変調器の性能
HFAN-09.0.4: NRZ Bandwidth - LF Cutoff and Baseline Wander
White Paper 6: 1-Wire&reg; Drivers Installation Guide for Windows
Pseudo-Random Number Generation Routine for the MAX765x Microprocessor
MAX2309のVCO位相ノイズの最適化
MAX3735: Choosing the APC Loop Capacitors Used with MAX3735/MAX3735A SFP Module Designs
VFD Grid/Anode Supply Using MAX6850-MAX6853 PUMP Output
Powering Six White LEDs with High Efficiency Using the MAX1848
High-V DC-DC Converter Is Ideal for MEMS (Warning: High-Voltage Circuit)
Applying HSTL Signals to PECL Input Devices
A Simple Thermistor Interface to an ADC
Portable Temperature Monitoring Demystified
高周波数での安定性のためMAX2648 5GHz LNAを用いた設計
433.05MHz&#65374;434.79MHzの欧州ISM帯域用にLNAをチューニング
Effects of Digital Crosstalk in Data Converters
A Beginner&#x27;s Guide to Filter Topologies
Dual-Voltage Supply Powers SIM Card
USB-Powered DSL Modem Supply
光トランシーバのライトショーの裏側
SHA-1セキュアハッシュアルゴリズムを使った電子取引の安全保証
マイクロコントローラにより、8051を使用した設計の電力効率を改善
短距離デバイス(SRD)に関する規制の参照場所
リモートキーレスエントリ(RKE：Remote Keyless Entry)システムの設計
リモートキーレスエントリシステムの概要
Power Supply for DDR-SDRAM Termination Operates From 3V to 5.5V Input
MAX1470 Superheterodyne Receiver FAQ
Graphics Chip Supply Delivers 1.65V at 26A
All-Ceramic Capacitors Enable the Smallest Footprint for a 1MHz, 6A Step-Down Regulator
Two AA Cells Power Dual-Supply &micro;P
Flexible Hot-Swap Current Limiter Allows Thermal Protection
HFAN-06.2: IBIS Data for CML, PECL, and LVDS Interface Circuits
A Cheap, Tiny LDO Provides up to 2A Output Current
GPS車両追跡装置
Tiny Voltage Converter Boosts a Single Lithium Cell and Needs no Inductors
Self-Oscillating Contactor Driver Minimizes Hold Power
レーザドライバとディジタル制御ポテンショメータおよび抵抗とのインタフェース
Measuring Telecom Systems Against a Pulse Mask Template
5MHz, 3-Pole, Low-Pass Filter plus Video Line Driver for Consumer Video Applications
Smart IC Maintains Uniform Bias Current for GaAs MESFETs
DS2155シングルチップトランシーバの二次側保護用ネットワークインタフェースと回路設計
Few Components Needed for an ESD-Protected Solid-State Potentiometer (EPOT) System with Two Pushbuttons
Simple Circuit Provides +5V Gate Bias from -48V Input
Choosing the MAX1932 External Inductor, Diode, Current-Sense Resistor, and Output Filter Capacitors for Worst-Case Conditions
DiSEqCコンパチブル、LNB用可変電源
ディジタル制御のパワ−変調を備えた可視レーザドライバ
Speed Control for Isolated -48V Fans
Add Current Boost to USB Charger Driven by an AC Adapter
HFAN-02.0.2: Laser Diode to Single-Mode Fiber Coupling Efficiency: Part 1 - Butt Coupling
Reduce Component Count and Cut Costs by Disabling the MAX1737 Source-Current Loop
White Paper 1: SHA Devices Used in Small Cash Systems
Phase Noise and TD-SCDMA UE Receiver
Satellite Radio Receiver 1st Mixer: MAX2682 Tuned for 2642.5MHz
The MAX2265 Is Ideal for EDGE Base-Station Pre-Driver Applications
How to Tune and Antenna Match the MAX1470 Circuit
低ノイズAPDバイアス回路
REP039: The MAX2510 IF Transceiver with the MAX5183 DAC
Improving Receiver Sensitivity with External LNA
One-Shot Timing Improves Microprocessor Reset Circuit
Mixer 2x2 Spurious Response and IP2 Relationship
Effects of Digital Crosstalk in Data Converters <br>Part 2: Crosstalk on the Clock
Effects of Digital Crosstalk in Data Converters<br> Part 3: Digital Data Signal Crosstalk on the Clock
Noise Reduction For ADSL Modem Power
Choosing the Right DC-DC Converter for Automotive Applications
Using the MAX3250 &#177;50V-Isolated RS-232 Transceivers
Low-Noise Amplifier Stability Concept to Practical Considerations, Part 1
Low-Noise Amplifier Stability Concept to Practical Considerations, Part 2
Low-Noise Amplifier Stability Concept to Practical Considerations, Part 3
External Pass Transistor Lowers Dropout Voltage
Signal Integrity vs. Transmission Rate and Cable Length for LVDS Serializers
DDR Memory-Termination Supply
Tiny IC Debounces Pushbutton Switch
Pass Transistor Boosts Current from Negative Linear Regulator
Circuit Drives Mixed Types and Quantities of LEDs
Transmit Digital Signals and Power Over Same Wires
Regulated Dual Voltages Control STN-LCD Contrast
Different Ways to Use a MAX6369 Series Watchdog Timer
High-Speed Pulse Generator Has Programmable Levels
Negative Resistor Cancels Op Amp Load
Single FET Controls 2nd LED Array in Switch-Mode LED Backlight
Low-Battery Indicator Is Low Cost, Highly Efficient, <i>and</i> Environmentally Friendly
Using a 4&#8211;20mA Loop-Powered Temperature Sensor
Triple Capacitive Voltage Inverter with the MAX871
Doubler/Inverter Charge Pumps Divide by Two
One Resistor Takes Heat from Single-Supply Op Amps
Using Maxim SPI-compatible Display Drivers with other SPI Peripherals
Charlieplexing - Reduced Pin-Count LED Display Multiplexing
-48V Hot Swap Solution For Telecom Line Cards Assures Immunity To Input Voltage Transients
Increase the Power of a Buck (Step-Down) Switching Power Supply IC
Critical DAC Parameters for Multi-Carrier GSM/EDGE Transmitters
Understanding Temperature Sensor Readings in the MAX1463
The MAX1463EVKIT Setup and Functional Verification
ウェハレベルパッケージ(WLP)とその応用
16QAMを用いた2.3GHzにおけるMAX2363トランスミッタICの性能
HFTA-06.0: Designing a Simple, Small, Wide-Band and Low-Power Equalizer for FR4 Copper Links
Convert a CPU Core Supply from Latchoff Mode to Hiccup Mode During a Short Circuit
トリミング不要の電話トーンジェネレータ
HFAN-06.1: Input/Output Models for Maxim Fiber Components
MAX3735: Using the MAX3735 in a Small Form Factor (SFF) Transceiver Module
消費電流が10&micro;A以下に低減されたロジック出力の小型光センサ
5V電源シーケンスを保証し、-12Vを-5Vにステップダウンする400mAレギュレータ
フィクスチャの設計とキャリブレーションでデバイスのSパラメータ測定を向上
MAX2538とKSS IFフィルタを備えたセルラCDMAミキサの性能
An Introduction to Jitter in Communications Systems
MAX9987&#65374;90ファミリのLOバッファ/スプリッタを使用して将来のLO駆動設計を簡素化
&micro;Cの内部8ビットADCを12ビットADCにアップグレード
Increasing the Fuel Gauge Dynamic Range
Calculator Converts Analog Signals to Digital Format for Optical SFF-8472 Standard
受話器を外した電話線から150mWの絶縁電源
HFTA-07.0：クロックおよびデータリカバリ回路における高精度リファレンスクロックの使用
Wiring the MAX6958/59 to 4-Digit Clock Displays
Understanding ADC Noise for Small and Large Signal Inputs for Receiver Applications
USB-Powered High Precision Hi-Fi Phono Preamp
Simple Circuit Generates Multiple Isolated Supply Voltages
Add High Voltage Capability to the MAX471/MAX472 High-Side Current Sense Amplifiers
Driving 4-1/2 Digit Meter Displays with the MAX6958/59 LED Drivers
HFAN-02.3.3: Optimizing the Resolution of Laser Driver Current Settings Using a Linear Digital Potentiometer
HFAN-03.0.2：光レシーバ性能の評価
Driving 4-1/2 Digit Counter Displays with the MAX6958/59 LED Drivers
Improving the Performance of the MAX4455 by Reducing On-Screen Display Artifacts
Temperature Monitoring Using the MAX1253/54 and MAX1153/54
DOCSIS 2.0の要件を満たすマキシムのケーブルアップストリームアンプの性能
MAX4454ベースのI/Q発生器によるRF直交モジュレータのテスト
Exact Circuit Analysis with Microsoft Excel
Analysis of ADC System Distortion Caused by Source Resistance
Bi-directional Current-Sense with Single Output
Class D Motor-Speed Control
48x16 Video-Crosspoint IC Eliminates External Mux-Amps
8:1 Mux-Amps Form Large Multiplane Mux Structures
Designing Output-Matching Networks for the MAX1472 ASK Transmitter
Tips to Remember When Designing with Digital Potentiometers
Avoiding Noise and Power Problems with Unused Op Amps
Simple Pulse Generator Has Low Parts Count
TD-SCDMAリファレンスデザインV1.0
DS1851 Varactor Temperature Compensation
GPSに最適化したLNA (REP024)
Auto-Retry Controller Suits Telecom Applications
Circuit Enables PC-Based Voltage Measurements
MAX2242パワーアンプ：アプリケーションの重要事項
MAX3872: Choosing an Optimal Filter Capacitor for the MAX3872 Multi-Rate CDR
DS1375 Power Line to 60Hz Clock
民生品における放射ノイズを減少するために スプレッドスペクトラム発振器を使用
MAX2247 Power Amplifier for 802.11g WLAN
500mW PHS Transmitter Meets Transient Spectrum Requirements with Edge Control
75&#937;のハイパスフィルタで衛星DBSチューナへのUHFの進入を制御
水晶発振子精度のサイン波発生器
1-Wire File Structure
ソフトウェアを介した1-Wire通信
1-Wire® Tagging with XML
Fan-Control Circuits and Speed Control Guide
MAX2655 GPS LNAの安定性の測定
1-Wireソフトウェアリソースガイドデバイス解説
Temperature Sensor IC: DS1631

キーワード: step-down converter, CPU cores, low voltage, step-down controller, lower core voltage, step down converters, cpu core, low core voltage
関連製品

アプリケーションノート 1162

A 3.3V Input Step-Down Converter for CPU Cores


要約: As I/O moves from 5V to 3.3V in microprocessor systems, there is a need for power conversion from 3.3V to a lower core voltage such as 1.8V at appreciable current. Without a higher voltage available, this requires a controller that will operate on less than 3.3V and FETs that are specified at a sub-logic-level gate voltage.

As I/O moves from 5V to 3.3V in microprocessor systems, there is a need for power conversion from 3.3V to a lower core voltage such as 1.8V at appreciable current. Without a higher voltage available, this requires a controller that will operate on less than 3.3V and FETs that are specified at a sub-logic-level gate voltage.

The MAX1637 step-down controller (shown below) is guaranteed to operate with Vcc from 3.15V to 5.5V. The IRF7401 is specified with Vgs = 2.7V. In addition, the inductor is the tallest part at 4.5mm (max).

A 3.3V Input Step-Down Converter for CPU Cores
3.3V to 1.8V @ 4A


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APP 1162:
アプリケーションノート 1162,AN1162, AN 1162, APP1162, Appnote1162, Appnote 1162