Load Switch IC TCK321G, TCK322G, TCK323G Application & Circuit

This reference design provides document with input selection characteristics. The load switch has small package and low on resistance suitable for battery charging application.

Battery charger circuit of load switch IC TCK321G, TCK322G, TCK323G application & circuit.

特性

  • Small package: 0.5 mm pitch WCSP16C (1.9 mm x 1.9 mm, t: 0.5 mm (typ.)), PD = 1.65 W
  • High input voltage: VIN (Max) = 36 V
  • High output current: IOUT (DC) = 2.0 A, per channel
  • Low ON resistance : RON = 98 mΩ (typ.) at VIN = 4.5 V, IOUT = - 1.0 A
  • Over voltage lockout function: 12.0 V at 321G, 15.0 V at 322G, 323G (typ.)
  • Under voltage lockout function: 2.9 V (typ.)
  • Auto select mode: a function that IC outputs regular input voltage automatically after judging whether a regular voltage of VINA or VINB.
  • Manual select mode: a function that is selected by VSEL to output voltage.
  • FLAG output
  • FLAG function at Auto select mode: FLAG signal is output the Low level VINA or VINB is selected. (VINA at 321G/322G, VINB at 323G)
  • FLAG function at Manual select mode: FLAG signal is output the Low level when VINA or VINB is out of regular voltage.
  • Reverse current blocking per channel (switch off state)
  • Inrush current reducing circuit
  • Thermal shutdown circuit

說明

  • Operation and application of break-before-make switches designed for safe input selection
  • Main switches in battery charging and other applications for smartphones, tablets, wearable devices, and other mobile devices having multiple charging options
Waveforms in manual selection mode of load switch IC TCK321G, TCK322G, TCK323G application & circuit.
Waveforms in Manual Selection mode

設計文件

供設計人員使用的材料,例如電路操作概述和設計注意事項的解釋。請點擊每個選項以查看內容。

設計數據

提供可載入到EDA工具中的電路資料、PCB佈局資料以及PCB製造中使用的資料。來自多個工具供應商的可用格式。您可以使用喜歡的工具來自由的編輯它。

使用東芝項目/產品

器件型號 器件目錄 使用部位・數量 說明
ESD protection diode (standard type, single) 1 Unidirectional TVS Diode (ESD Protection Diode), 21 V, SOD-963(CST2C)

相關文件

我們提供有助於設計和考慮類似電路的材料,例如已安裝產品的應用說明。請點擊每個選項以查看內容。

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