AV04A 2V～4.5V
Features
Section titled “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
Section titled “Specification”Dimension
Section titled “Dimension”| Item | Description |
|---|---|
| Dimension | W23×D21×H6.2mm |
Power Supply
Section titled “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
Section titled “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
Section titled “Block diagram”
Pinassign
Section titled “Pinassign”
Switches and Connectors
Section titled “Switches and Connectors”
| Item | Description |
|---|---|
| Switch | Switch for turning on and off the 3.3v power |
| Connector | JST SH connector |
Sample App
Section titled “Sample App”ドキュメント
Section titled “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
Section titled “Revision history”- Rev A1.0: First edition, January 2020