Overview
The NCP1800DM42R2 is a constant current, constant voltage (CCCV) lithium-ion battery charge controller produced by onsemi. This device is designed to manage the charging process of single-cell lithium-ion batteries efficiently and safely. It features an external sense resistor to set the charging current, and it includes various protection mechanisms such as overvoltage lockout, undervoltage lockout, and battery overvoltage detection. The NCP1800DM42R2 is packaged in a Micro8 (PDSO8) case, making it suitable for compact and space-constrained applications.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Supply Voltage | VCC | 2.5 | - | 16 | V |
| Input Supply Current | ICC | - | 140 | 250 | μA |
| Regulated Output Voltage (NCP1800DM42) | VREG | 4.158 | 4.2 | 4.242 | V |
| Full-Charge Current Reference Voltage | VFCHG | 210 | 240 | 270 | mV |
| Full-Charge Current Range with RSNS = 0.4 Ω | IREG1 | 600 | - | 1000 | mA |
| Full-Charge Current Range with RSNS = 0.8 Ω | IREG2 | 300 | - | 600 | mA |
| VCC Overvoltage Lockout | VOVLO | 6.95 | 7.20 | 7.45 | V |
| VSNS Overvoltage Lockout | VSOVLO | 4.4 | 4.5 | 4.6 | V |
| Operating Ambient Temperature | TA | -20 | - | 85 | °C |
| Storage Temperature | Tstg | -55 | - | 150 | °C |
Key Features
- Constant current, constant voltage (CCCV) charging mode for lithium-ion batteries.
- External sense resistor sets the charging current.
- Overvoltage lockout (VCC and VSNS) and undervoltage lockout for protection.
- Battery overvoltage detection and charge disable functionality.
- End-of-charge (EOC) detection and indication through the CFLG pin.
- Compact Micro8 (PDSO8) package suitable for space-constrained applications.
- ESD protection (Human Body Model and Machine Model) and moisture sensitivity level 1.
Applications
- Portable electronics such as smartphones, tablets, and laptops.
- Wearable devices like smartwatches and fitness trackers.
- Power tools and cordless appliances.
- Electric vehicles and hybrid electric vehicles (HEVs).
- Medical devices and healthcare equipment.
- Consumer electronics requiring efficient and safe battery charging.
Q & A
- What is the primary function of the NCP1800DM42R2?
The NCP1800DM42R2 is a constant current, constant voltage (CCCV) lithium-ion battery charge controller.
- What is the input supply voltage range for the NCP1800DM42R2?
The input supply voltage range is from 2.5 V to 16 V.
- How is the full-charge current set in the NCP1800DM42R2?
The full-charge current is set using an external sense resistor connected to the ISEL pin.
- What are the overvoltage lockout thresholds for VCC and VSNS?
The VCC overvoltage lockout thresholds are between 6.95 V and 7.45 V, and the VSNS overvoltage lockout thresholds are between 4.4 V and 4.6 V.
- How does the NCP1800DM42R2 indicate the end-of-charge (EOC) status?
The EOC status is indicated through the CFLG pin, which goes low when the charge is complete.
- What is the operating ambient temperature range for the NCP1800DM42R2?
The operating ambient temperature range is from -20°C to 85°C.
- What type of package does the NCP1800DM42R2 come in?
The NCP1800DM42R2 is packaged in a Micro8 (PDSO8) case.
- Does the NCP1800DM42R2 have ESD protection?
Yes, it has ESD protection according to Human Body Model and Machine Model standards.
- What is the storage temperature range for the NCP1800DM42R2?
The storage temperature range is from -55°C to 150°C.
- What are some common applications of the NCP1800DM42R2?
Common applications include portable electronics, wearable devices, power tools, electric vehicles, and medical devices.
