Overview
The NCP367OPMUEOTBG, produced by onsemi, is a charge path protection device designed to ensure the safety and reliability of portable electronic devices during the charging process. This integrated circuit provides comprehensive protection against various charging anomalies, including overvoltage, undervoltage, overcurrent, and thermal faults. The device features an internal PMOS FET, eliminating the need for external components and thus reducing system cost and PCB area. It is particularly suited for applications involving USB and AC/DC power supplies, making it compatible with a wide range of portable devices such as mobile phones, MP3 players, and personal digital assistants.
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 | 100 | mV | |
| Overvoltage Lockout Threshold | OVLO | Vin rises up OVLO threshold | 5.64 | 5.85 | 6.60 | V |
| Overvoltage Lockout Hysteresis | OVLOhyst | 100 | 150 | mV | ||
| Vin versus Vout Resistance | RDS(on) | Vin = 5 V, Enable Mode, Load Connected to Vout | 50 | 100 | 100 | mΩ |
| Supply Quiescent Current | Idd | No Load | 42 | 130 | μA | |
| Overcurrent Threshold | IOCP | Vin = 5 V, 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 | 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 kV (Contact), 15 kV (Air)
- 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 NCP367OPMUEOTBG?
The NCP367OPMUEOTBG is a charge path protection device that protects portable electronic devices from incorrect charging conditions, including overvoltage, undervoltage, overcurrent, and thermal faults.
- What is the input voltage range of the NCP367OPMUEOTBG?
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 the gain select pin. It turns off the internal PMOS FET when the charge current exceeds the set limit.
- What is the purpose of the FLAG output?
The FLAG output alerts the system to any fault conditions such as overvoltage, overcurrent, or thermal events by pulling the pin low.
- What is the battery overvoltage threshold?
The battery overvoltage threshold is between 4.3 V and 4.4 V with a hysteresis of 100 mV to 200 mV.
- How does the device protect against thermal faults?
The device features thermal shutdown protection to prevent overheating and potential damage.
- What is the package type and size of the NCP367OPMUEOTBG?
The device is packaged in an 8-lead DFN 2.2x2 mm package.
- Is the NCP367OPMUEOTBG compliant with any ESD standards?
Yes, it complies with IEC61000-4-2 (Level 4) ESD ratings: 8 kV (Contact), 15 kV (Air).
- What are some typical applications for the NCP367OPMUEOTBG?
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 eliminates inrush current by limiting the current during the initial 1.8 ms when the device is powered up.
