Overview
The RT9458WSC is a battery Management made by Richtek Tech in a WLCSP-20(1.9x2.1) package with 20 pins. -40℃~+125℃ 1 4.2V 4.3V~6V WLCSP-20(1.9x2.1) Battery Management ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:RT9458WSC, from EasyEDA) and its footprint (EasyEDA_Cloud:WLCSP-20_L2.1-W1.9-R4-C5-P0.40-TL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C3034084).
Symbol
Footprint
Parameters
10- Battery Temperature Detection
- Not supported
- Charge Current - Max
- 1.55A
- Charging Saturation Voltage
- 4.2V
- Features
- Overcurrent Protection；Constant voltage charging；Constant current charging；Automatic recharge；Charge termination；Programmable charging current；Reverse current blocking；Overvoltage protection；Undervoltage lockout；Trickle charging
- Interface
- I2C
- Number of Cells
- 1
- Operating Temperature
- -40℃~+125℃
- The Chip Type
- Charging IC
- Type of Battery
- Lithium Battery
- Voltage - Supply
- 4.3V~6V
Order codes
1- RT9458WSCLCSC C3034084
Pinout
20| Pin | Name | Type |
|---|---|---|
| A1 | VIN | Unspecified |
| A2 | VIN | Unspecified |
| A3 | VIN | Unspecified |
| A4 | IRQ | Unspecified |
| A5 | BATS | Unspecified |
| B1 | VMID | Unspecified |
| B2 | VMID | Unspecified |
| B3 | VMID | Unspecified |
| B4 | OTG | Unspecified |
| B5 | ISNSIN | Unspecified |
| C1 | LX | Unspecified |
| C2 | LX | Unspecified |
| C3 | LX | Unspecified |
| C4 | AGND | Unspecified |
| C5 | SCL | Unspecified |
| D1 | PGND | Unspecified |
| D2 | PGND | Unspecified |
| D3 | PGND | Unspecified |
| D4 | BOOT | Unspecified |
| D5 | SDA | Unspecified |
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Is there a KiCad symbol and footprint for the RT9458WSC?
Yes. The symbol is EasyEDA_Cloud:RT9458WSC and the footprint EasyEDA_Cloud:WLCSP-20_L2.1-W1.9-R4-C5-P0.40-TL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the RT9458WSC?
WLCSP-20(1.9x2.1), with 20 pins. Its footprint is drawn on this page.
Where is the RT9458WSC datasheet?
Richtek Tech publishes it: the Datasheet link on this page opens it.
Where can I order the RT9458WSC?
JLCPCB lists it as part C3034084, with 0 in stock; the sellers' links on this page open their listings.
What can replace the RT9458WSC?
Parts like it in the library: the MAX8971GEWP+T by Maxim Integrated (Analog Devices). Check their datasheets: a part that fits the footprint may still differ in its ratings.
