The ISL78236 is a dual output, 3A/3A, integrated FET buck regulator for point-of-load power applications. The supply voltage range is from 2. 8V to 6V, allowing for the use of a single Li+ cell, three NiMH cells, or a regulated 3V/5V bus input. It is optimized for regulating output voltages down to 1. 2V. Each channel provides an output current up to 3A, which can be combined to form a single 6A output in current sharing mode. The two channels operate 180° out of phase to reduce input RMS current and EMI. The ISL78236 integrates a pair of low ON-resistance P-channel and N-channel internal MOSFETs to maximize efficiency and minimize external component count. It can operate up to 100% duty cycle to maximize operating life as battery voltage drops out. When supplying 3A on each channel, the 100% duty cycle operation limits the dropout voltage to less than 250mV. Other features include internal digital soft-start, independent channel enable for power sequencing, overcurrent protection, and thermal shutdown. The ISL78236 is offered in a 24 Ld 4mmx4mm QFN package with 1mm maximum height. The complete converter occupies less than 1. 5cm2 area. The ISL78236 is AEC - Q100 qualified and is rated for the automotive temperature range (-40°C to +105°C).

特長

  • Dual 3A/3A independent outputs
  • 2.5MHz synchronous buck regulator with internal MOSFETs up to 95% efficiency
  • 2% voltage reference accuracy over-temperature
  • 6A current sharing mode operation
  • Internal or external compensation
  • Peak current limiting and hiccup mode short circuit protection
  • Reverse overcurrent protection
  • Over-temperature protection shutdown
  • AEC-Q100 qualified

アプリケーション

  • DSP and embedded processor power supply
  • Infotainment system power
  • Automotive point of load power

descriptionドキュメント

タイトル language 分類 形式 サイズ 日付
データシート
star ISL78236 Datasheet データシート PDF 2.40 MB
ユーザーガイド、マニュアル
ISL78236CRSHEVAL1Z User Guide マニュアル-開発ツール PDF 950 KB
ISL78236DUALEVAL1Z User Guide マニュアル-開発ツール PDF 951 KB
アプリケーションノート、ホワイトペーパー
AN1681: Grounding Techniques アプリケーションノート PDF 509 KB
AN1684: Nonideality of Ground アプリケーションノート PDF 397 KB

file_downloadダウンロード

タイトル language 分類 形式 サイズ 日付
Hardware
ISL78236DUALEVAL1Z Design Files PCB設計ファイル ZIP 749 KB

memoryボード&キット

製品名 タイトル 分類 会社名
ISL78236CRSHEVAL1Z Automotive High-Efficiency Synchronous Buck Regulator Evaluation Board Evaluation Renesas
ISL78236DUALEVAL1Z Dual 3A Current Sharing 2.5MHz High-Efficiency Synchronous Buck Regulator Evaluation Board Evaluation Renesas