AV04A 2V～4.5V
Features
The RTC is equipped with a JST SH connector, which converts 2 to 4.5V battery voltage to 3.3V with a step-up/down power supply circuit and supplies 3.3V to each leaf. A switch to turn on/off the 3.3V is mounted on the IC. It has an AD converter to monitor the battery voltage. The batteries that can be connected to the SH connector are assumed to be two or three dry batteries or Li-Po and Li-ION batteries.
Specification
Dimension
| Item | Description |
|---|---|
| Dimension | W23×D21×H6.2mm |
Power Supply
| Item | Description |
|---|---|
| Part number | RP604K331B-TR |
| Battery voltage | 1.8～5.5V |
| Output voltage | 3.3V±2% |
| Controlling method | PWM/PFM Automatic switching control |
| Maximum output current | 300mA (when step down) |
| Protection circuit | Over current protection / Thermal shutdown |
AD Converter
| Item | Description |
|---|---|
| Part number | ADC081C027CIMK |
| Resolution | 8bit |
| Reference voltage | Vdd(3.3V) |
| Sample rate | 188.9kSPS(max) |
| Interfaces | I2C (Address: 0x50) |
Block diagram
Pinassign
Tips
Switches and Connectors
| Item | Description |
|---|---|
| Switch | Switch for turning on and off the 3.3v power |
| Connector | JST SH connector |
Sample App
ドキュメント
- Spec sheet
- Schematic
- Component marking (Front side)
- Component marking (reverse side)
- PCBLayout(Zuken)
- PCBLayout(dxf)
- 3D drawing
Revision history
- Rev A1.0: First edition, January 2020
Last modified 12.03.2021