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Load Switch IC TCK321G, TCK322G, TCK323G Application & Circuit

Battery charger circuit

Battery charger circuit Click to enlarge
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Waveforms in Manual Selection mode

Waveforms in Manual Selection mode Click to enlarge
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Description

  • 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

Features

  • 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

Reference design files

Design, Document

“Design・Document” contains the documents listed below.

Circuit diagram

BOM

Reference guide

Design, File

“Design・File” contains the contents listed below.

Circuit schematic (OrCAD®)

Toshiba items

Toshiba items
Part Number Device Category Portion Usage Description
TCK32xG* Load Switch IC 1 VIN=2.3~28V/Inrush current reduction/Slew rate control/WCSP9
DF2S23P2CTC*
TVS Diode 1 VESD ±30kV(max)/IPP=14A(max)/VBR=24.1V(typ)/CST2C

* : New product

Documents

Application Note

Application note
Name Outline Date of issue
Describes how to use 36V dual inputs- single output power Multiplexer IC, TCK32 series, that is ideal for mobile devices such as smartphones and tablet PCs. 9/2016

Catalog

Catalog
Name Outline Date of issue
Describes the lineups of Small Package(MOSFET/BJT/Diode/Linear IC/Logic/RF Device) 7/2019
Describes the lineups of TVS diode (ESD Protection diode)
9/2017

Video


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·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.