The SGM40572 is a 1A linear battery charger that it can charge single-cell Li-Ion or Li-polymer battery in a wide input voltage range from smart wall adapter or USB device. The high input voltage range with input over-voltage protection supports charging by an unregulated adapter.
This chip indeed allows the simultaneous connection of the system and battery to the output port. To ensure that the battery is fully charged within the 12-hour safety timer, the average system load must be carefully managed.
The charging process involves three stages:
- Pre-charge stage: A small pre-charge current activates the low-voltage battery to enable constant-current fast charging.
- Constant-current stage: the battery is charged at a constant-current.
- Constant-voltage stage: the battery is charged at a constant-voltage until it reaches full-charge.
Additionally, the SGM40572 includes the internal thermal regulation and the over-temperature protection (OTP) to ensure safe charging.
The SGM40572 allows the charging process to be customized with the external resistors:
- Fast charge current: set by an external resistor.
- Pre-charge current and termination current: adjustable by changing external resistor.
Additionally, the SGM40572 integrates JEITA control to optimize charging based on the battery temperature, which can be monitored by using an NTC resistor.
- Multi-Chemistry Voltage Support: 4.2V, 4.35V and 4.4V
- 0.8% Charge Voltage Accuracy and 10% Charge Current Accuracy
- USB Input Current Limit: 100mA and 500mA
- Programmable Termination and Pre-Charge Threshold
- Input Rating Voltage: 30V
- Input Over-Voltage Protection Threshold: 6.6V or 7.1V
- Input Voltage Dynamic Power Management
- Thermal Shutdown Protection: 155℃
- Thermal Regulation: 125℃
- Support ISET Short Detection and OUT Short-Circuit Protection
- Safety Timer: 12h
- Support Power Good and Charge Status Indication
- Automatic Termination and Timer Disable Mode (TTDM)
- Available in a Green MSOP-10 (Exposed Pad) Package
Smart Watch and Wristband
Wireless Speaker
TWS Headset and Headphone
Portable Medical Equipment
Mobile POS
Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM40572-426ADKNFYPMS10G/TR | Active | MSOP-10 (Exposed Pad) | 10 | YES | YES | YES | YES | -40℃ to +85℃ | View | View | ||||
SGM40572-426AEJMFYPMS10G/TR | Active | MSOP-10 (Exposed Pad) | 10 | YES | YES | YES | YES | -40℃ to +85℃ | View | View | ||||
SGM40572-426BDKNFYPMS10G/TR | Active | MSOP-10 (Exposed Pad) | 10 | YES | YES | YES | YES | -40℃ to +85℃ | View | View | ||||
SGM40572-426BEJMFYPMS10G/TR | Active | MSOP-10 (Exposed Pad) | 10 | YES | YES | YES | YES | -40℃ to +85℃ | View | View | ||||
SGM40572-436ADKNFYPMS10G/TR | Active | MSOP-10 (Exposed Pad) | 10 | YES | YES | YES | YES | -40℃ to +85℃ | View | View | ||||
SGM40572-446AEJMFYPMS10G/TR | Active | MSOP-10 (Exposed Pad) | 10 | YES | YES | YES | YES | -40℃ to +85℃ | View | View |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
