Overview
The MC78M18CDTRKG is a 500 mA positive voltage regulator from onsemi, part of the MC78M00/MC78M00A and NCV78M00 series. These regulators are designed for local, on-card voltage regulation and are similar to the MC7800 series but with half the output current. They are known for their ruggedness and reliability under various operating conditions.
The MC78M18CDTRKG specifically provides an output voltage of 18 V and is available in a DPAK-3 package, which is lead-free. This component is suitable for applications requiring stable voltage regulation with minimal external components.
Key Specifications
| Characteristics | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 17.3 | 18 | 18.7 | Vdc |
| Output Voltage Variation (21 Vdc ≤ VI ≤ 33 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | VO | 17.1 | - | 18.9 | Vdc |
| Line Regulation (TJ = 25°C, 21 Vdc ≤ VI ≤ 33 Vdc, IO = 200 mA) | Regline | - | 10 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | Regload | - | - | 30 | mV |
| Dropout Voltage (TJ = 25°C) | VI−VO | - | 2.0 | - | Vdc |
| Short Circuit Current Limit (TJ = 25°C, VI = 35 V) | IOS | - | 350 | - | mA |
| Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) | ΔVO/ΔT | - | ±0.3 | - | mV/°C |
| Peak Output Current (TJ = 25°C) | IO | - | 700 | - | mA |
| Operating Junction Temperature Range | TJ | - | - | +150 | °C |
| Storage Temperature Range | Tstg | -65 | - | +150 | °C |
Key Features
- No external components required for operation.
- Internal thermal overload protection to prevent overheating.
- Internal short circuit current limiting to protect against short circuits.
- Output transistor safe-area compensation for enhanced reliability.
- High accuracy option available (±2% for MC78M00A series).
- Available in various output voltages including 5.0 V, 8.0 V, 12 V, 15 V, and 18 V.
- NCV prefix available for automotive and other applications requiring high reliability.
Applications
- Local, on-card voltage regulation in various electronic devices.
- Automotive systems requiring high reliability and stability.
- Industrial control systems and equipment.
- Consumer electronics needing stable voltage supply.
- Medical devices requiring precise voltage regulation.
Q & A
- What is the maximum output current of the MC78M18CDTRKG?
The maximum output current is 500 mA with adequate heatsinking.
- What is the output voltage of the MC78M18CDTRKG?
The output voltage is 18 V.
- Does the MC78M18CDTRKG require external components for operation?
No, it does not require any external components for operation.
- What is the dropout voltage of the MC78M18CDTRKG?
The dropout voltage is 2.0 Vdc.
- What is the short circuit current limit of the MC78M18CDTRKG?
The short circuit current limit is 350 mA.
- What is the operating junction temperature range of the MC78M18CDTRKG?
The operating junction temperature range is from 0°C to +150°C.
- What is the storage temperature range of the MC78M18CDTRKG?
The storage temperature range is from -65°C to +150°C.
- Does the MC78M18CDTRKG have internal thermal overload protection?
Yes, it has internal thermal overload protection.
- Is the MC78M18CDTRKG available in different packages?
Yes, it is available in a DPAK-3 package, which is lead-free.
- What are some typical applications of the MC78M18CDTRKG?
Typical applications include local, on-card voltage regulation in various electronic devices, automotive systems, industrial control systems, consumer electronics, and medical devices.
