The ISL9120 and ISL9120IR are highly integrated buck-boost switching regulators that accept input voltages either above or below the regulated output voltage. The regulator automatically transitions between buck and boost modes without significant output disturbance. They also have automatic bypass functionality. When the input voltage is generally within 1% to 2% of the output voltage, there will be a direct bypass connection between the VIN and VOUT pins.

In addition to the automatic bypass functionality, the ISL9120 and ISL9120IR also have forced bypass functionality with the use of the BYP pin. The device is capable of delivering up to 800mA of output current (VIN = 2.5V, VOUT = 3.3V) and provides excellent efficiency due to its adaptive current limit Pulse Frequency Modulation (PFM) control architecture.

The ISL9120 and ISL9120IR are designed for stand-alone applications and support a 3.3V fixed output voltage or variable output voltages with an external resistor divider. The forced bypass power saving mode can be chosen if voltage regulation is not required. The device consumes less than 3.5µA of current over the operating temperature range in forced bypass mode.

The ISL9120 and ISL9120IR require only a single inductor and very few external components. Power supply solution size is minimized by the ISL9120 1.41mm x 1.41mm WLCSP package and the ISL9120IR 3mm x 3mm 12 Ld TQFN package.

特長

  • Accepts input voltages above or below regulated output voltage
  • Automatic bypass mode functionality
  • Automatic and seamless transitions between buck and boost modes
  • Input voltage range: 1.8V to 5.5V
  • Selectable forced bypass power-saving mode
  • Adaptive multilevel current limit scheme to optimize efficiency at low and high currents
  • Output current: up to 800mA (VIN = 2.5V, VOUT = 3.3V)
  • High efficiency: up to 98%
  • 41μA quiescent current maximizes light-load efficiency
  • Fully protected for over-temperature and undervoltage
  • Small packages
    • ISL9120 - 1.41mm x 1.41mm WLCSP
    • ISL9120IR - 3mm x 3mm 12 Ld TQFN

アプリケーション

  • Smartphones and tablets
  • Portable consumer and wearable devices

製品選択

製品名 Part Status Pkg. Type Carrier Type MOQ 購入/サンプル
Active WLCSP-BP Reel 3000
Availability
Active WLCSP-BP Reel 250
Availability
Active WLCSP-BP Reel 3000
Availability
Active WLCSP-BP Reel 250
Availability
Active TQFN Tube 100
Availability
Active TQFN Reel 3000
Availability
Active TQFN Reel 250
Availability
Active TQFN Tube 100
Availability
Active TQFN Reel 3000
Availability

ドキュメント&ダウンロード

タイトル language 分類 形式 サイズ 日付
データシート
ISL9120 Datasheet データシート PDF 731 KB
ISL9120IR Datasheet データシート PDF 735 KB
アプリケーションノート、ホワイトペーパー
Five Easy Steps to Create a Multi-Load Power Solution ホワイトペーパー PDF 846 KB
A Smarter Way to Power Wearable Devices 简体中文 ホワイトペーパー PDF 576 KB
AN9208: High Frequency Power Converters アプリケーションノート PDF 592 KB
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
PCN / PDN
PCN21005 - Alternate assembly facility of the listed Renesas DFN / QFN / TDFN / TQFN packaged products 製品変更通知 PDF 158 KB
PCN20025 - Carrier Tape dimension change for the listed Renesas WLCSP Packaged Products 製品変更通知 PDF 126 KB

ボード&キット

製品名 タイトル 分類 Company
ISL9120IIA-EVZ Compact High-Efficiency Low Power Buck-Boost Regulator Evaluation Board 評価 Renesas
ISL9120IIN-EVZ Compact High-Efficiency Low Power Buck-Boost Regulator Evaluation Board 評価 Renesas
ISL9120IRA-EVZ Compact High-Efficiency Low Power Buck-Boost Regulator Evaluation Board 評価 Renesas
ISL9120IRN-EVZ Compact High-Efficiency Low Power Buck-Boost Regulator Evaluation Board 評価 Renesas
Pet-Activity-Monitor-Reference-Design ペットアクティビティモニタ リファレンス Renesas
Smart-Medicine-Box スマート薬ケース リファレンス Renesas
Smart-Medicine-Box-with-BLE BLEスマート薬ケース リファレンス Renesas

ニュース&各種リソース