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.
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.
Design, File
“Design・File” contains the contents listed below.
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 |
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