概要

The ISL9103, ISL9103A is a 500mA, 2. 4MHz step-down regulator, which is ideal for powering low-voltage microprocessors in compact devices such as PDAs and cellular phones. It is optimized for generating low output voltages down to 0. 8V. The supply voltage range is from 2. 7V to 6V allowing the use of a single Li+ cell, three NiMH cells or a regulated 5V input. It has guaranteed minimum output current of 500mA. A high switching frequency of 2. 4MHz pulse-width modulation (PWM) allows using small external components. Under light load condition, the device operates at low IQ skip mode with typical 20µA quiescent current for highest light load efficiency to maximize battery life, and it automatically switches to fixed frequency PWM mode under heavy load condition. The ISL9103, ISL9103A includes a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize system efficiency and minimize the external component count. 100% duty-cycle operation allows less than 300mV dropout voltage at 500mA. The ISL9103, ISL9103A offers internal digital soft-start, enable for power sequence, overcurrent protection and thermal shutdown functions. In addition, the ISL9103, ISL9103A offers a quick bleeding function that discharges the output capacitor when the IC is disabled. The ISL9103, ISL9103A is offered in a 1. 6x1. 6mm UTDFN package. The complete converter occupies less than 0. 5cm2.

ISL9103A Functional Diagram
ISL9103A Functional Diagram
  • High Efficiency Integrated Synchronous Buck Regulator with up to 95% Efficiency
  • 2.7V to 6.0V Supply Voltage
  • 2.4MHz PWM Switching Frequency
  • 500mA Guaranteed Output Current
  • 3% Output Accuracy Over-Temperature and Line for Fixed Output Options
  • 20µA Quiescent Supply Current in Skip Mode
  • Less than 1µA Logic Controlled Shutdown Current
  • 100% Maximum Duty Cycle for Lowest Dropout
  • Ultrasonic Switching Frequency at Skip Mode to Prevent Audible Frequency Noise (For ISL9103A Only)
  • Discharge Output Capacitor when Disabled
  • Internal Digital Soft-Start
  • Peak Current Limiting, Short Circuit Protection
  • Over-Temperature Protection
  • Chip Enable
  • Small 6 Pin 1.6mmx1.6mm UTDFN Package
  • Pb-Free (RoHS Compliant)

アプリケーション

  • Single Li-ion Battery-Powered Equipment
  • Mobile Phones and MP3 Players
  • PDAs and Palmtops
  • WCDMA Handsets
  • Portable Instruments

ドキュメント

= ピックアップ
分類 タイトル 日時
データシート
ISL9103, ISL9103A Datasheet
PDF 744 KB
Product Advisory
PA22026 - MSL1 Packing Change for listed Renesas Products
PDF 414 KB
アプリケーションノート
AN9208: High Frequency Power Converters
PDF 592 KB
製品変更通知
PCN10114 - Part Marking Configuration Change for Intersil TDFN, uTDFN, and uTQFN Packaged Products
PDF 205 KB
アプリケーションノート
AN1681: Grounding Techniques
PDF 509 KB
アプリケーションノート
AN1684: Nonideality of Ground
PDF 397 KB
アプリケーションノート
AN9210: A New Pspice Subcircuit For The Power MOSFET Featuring Global Temperature Options
PDF 650 KB
アプリケーションノート
AN9209: A Spice-2 Subcircuit Representation For Power MOSFETs Using Empirical Methods
PDF 387 KB
アプリケーションノート
AN7244: Understanding Power MOSFETs
PDF 349 KB
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設計・開発

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製品選択

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    ご購入 / サンプル
    型名
    ISL9103AIRUAZ-T
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    		 uTDFN Reel 1 サンプルを入手,
    ISL9103AIRUBZ-T
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    今すぐ購入する
    		uTDFN Reel 1 1.694 サンプルを入手,
    ISL9103AIRUCZ-T
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    今すぐ購入する
    		uTDFN Reel 1 1.993 サンプルを入手,
    ISL9103AIRUDZ-T
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    		 uTDFN Reel 1 サンプルを入手,
    ISL9103AIRUFZ-T
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    		 uTDFN Reel 1 サンプルを入手,
    ISL9103AIRUJZ-T
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    		 uTDFN Reel 1 サンプルを入手,
    ISL9103AIRUWZ-T
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    		 uTDFN Reel 1 サンプルを入手,
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