Overview
The NCP367DPMUECTBG, produced by onsemi, is a charge path protection device designed to ensure the safety and integrity of portable electronic devices during the charging process. This integrated circuit (IC) provides comprehensive protection against various charging anomalies, including overvoltage, overcurrent, and thermal events. It features an internal PMOS FET, which eliminates the need for external devices, thereby reducing system cost and PCB area. The device is compliant with both USB and AC/DC supply standards, making it suitable for a wide range of applications.
Key Specifications
| Characteristic | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Voltage Range | Vin | 1.2 | 28 | V | ||
| Undervoltage Lockout Threshold | UVLO | Vin falls down UVLO threshold | 1.75 | 1.85 | 1.9 | V |
| Undervoltage Lockout Hysteresis | UVLOhyst | 60 | 100 | mV | ||
| Overvoltage Lockout Threshold | OVLO | Vin rises up OVLO threshold | 3.65 | 3.8 | 3.95 | V |
| Overvoltage Lockout Hysteresis | OVLOhyst | 45 | 150 | mV | ||
| Vin versus Vout Resistance | RDS(on) | Enable Mode, Load Connected to Vout | 50 | 100 | mΩ | |
| Supply Quiescent Current | Idd | No Load | 42 | 130 | μA | |
| Overcurrent Threshold | IOCP | EN = low, Load Connected to Vout, Rilim = 0 Ω, 1 A/μs, GS = 0.4 V | 2.30 | 2.85 | 3.40 | A |
| Battery Overvoltage Threshold | OVBAT | 0°C to 85°C | 4.3 | 4.35 | 4.4 | V |
| Battery Overvoltage Hysteresis | OVHYS | 0°C to 85°C | 100 | 150 | 200 | mV |
Key Features
- Overvoltage Protection Up to +30 V
- Fast Turn Off Time
- Very Low Current Consumption/USB Compliant
- Lithium-ion Battery Voltage Monitoring
- Overvoltage Lockout (OVLO) and Undervoltage Lockout (UVLO)
- Overcurrent Protection Externally Adjustable (OCP) up to 2.8 A
- Thermal Shutdown Protection
- Shutdown EN and Gain Input Pins
- Soft-Start to Eliminate Inrush Current
- Alert FLAG Output
- Compliance to IEC61000-4-2 (Level 4) ESD Ratings
- 8 Lead DFN 2.2x2 mm Package, Pb-Free Devices
Applications
- USB Devices
- Mobile Phones
- Peripherals
- Personal Digital Applications
- MP3 Players
Q & A
- What is the primary function of the NCP367DPMUECTBG?
The NCP367DPMUECTBG is a charge path protection device that protects portable electronic devices from incorrect charging conditions, including overvoltage, overcurrent, and thermal events.
- What is the input voltage range of the NCP367DPMUECTBG?
The input voltage range is from 1.2 V to 28 V.
- How does the overcurrent protection work?
The overcurrent protection is externally adjustable and can be set using a pull-down resistor and gain select pin. It turns off the internal PMOS FET when the charge current exceeds the set limit.
- What is the battery overvoltage threshold?
The battery overvoltage threshold is between 4.3 V and 4.4 V with a built-in hysteresis of 100 mV to 200 mV.
- Does the NCP367DPMUECTBG have thermal shutdown protection?
Yes, it includes thermal shutdown protection to prevent overheating.
- How does the FLAG output work?
The FLAG output alerts the system of any fault events such as overvoltage, overcurrent, or thermal events by going low.
- What is the package type of the NCP367DPMUECTBG?
The device is packaged in an 8 Lead DFN 2.2x2 mm package and is Pb-Free.
- Is the NCP367DPMUECTBG compliant with any ESD standards?
Yes, it is compliant with IEC61000-4-2 (Level 4) ESD ratings, providing ±8 kV contact and ±15 kV air protection.
- What are some typical applications for the NCP367DPMUECTBG?
Typical applications include USB devices, mobile phones, peripherals, personal digital applications, and MP3 players.
- How does the soft-start feature work?
The soft-start feature limits the inrush current during power-up, allowing capacitor charging and preventing high current peaks.
