Overview
The MC7915BT is a three-terminal negative voltage regulator produced by onsemi. This component is part of the MC7900 series, which offers fixed output voltage options ranging from -5.0 V to -24 V. The MC7915BT specifically provides a regulated output voltage of -15 V. It is designed to provide high current and low dropout voltage, making it suitable for a variety of applications requiring stable negative voltage supplies.
Key Specifications
| Characteristics | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (TJ = +25°C) | VO | -14.7 | -15 | -15.3 | Vdc |
| Line Regulation (TJ = +25°C, IO = 1.0 A) | Regline | -17.5 Vdc ≥ VI ≥ -30 Vdc | -20 Vdc ≥ VI ≥ -26 Vdc | 14 - 57 mV | mV |
| Load Regulation (TJ = +25°C) | Regload | 5.0 mA ≤ IO ≤ 1.5 A | 68 - 150 mV | mV | |
| Input Bias Current | IIB | - | 4.4 | 8.0 | mA |
| Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) | Vn | - | - | 90 | μV |
| Ripple Rejection (IO = 20 mA, f = 120 Hz) | RR | - | - | 60 | dB |
| Dropout Voltage (IO = 1.0 A, TJ = +25°C) | VI-VO | - | - | 1.3 | Vdc |
| Average Temperature Coefficient of Output Voltage | ΔVO/ΔT | - | - | -1.0 | mV/°C |
Key Features
- Fixed Output Voltage: The MC7915BT provides a fixed output voltage of -15 V, making it ideal for applications requiring a stable negative voltage supply.
- High Current Capability: It can supply up to 1.0 A of output current, making it suitable for high-current applications.
- Low Dropout Voltage: The component has a low dropout voltage of 1.3 V, which is beneficial for minimizing power losses.
- Line and Load Regulation: Excellent line and load regulation ensure that the output voltage remains stable over a range of input voltages and output currents.
- Thermal Shutdown and Current Limiting: Built-in thermal shutdown and current limiting protect the device from overheating and overcurrent conditions.
- Wide Operating Temperature Range: The device operates over a temperature range of -40°C to +125°C, making it suitable for various environmental conditions.
Applications
- Power Supplies: The MC7915BT is commonly used in power supply circuits to provide a stable negative voltage output.
- Industrial Control Systems: It is used in industrial control systems where reliable negative voltage supplies are necessary.
- Telecommunications Equipment: The component is suitable for telecommunications equipment that require stable negative voltage supplies.
- Medical Devices: It can be used in medical devices that need precise and stable negative voltage supplies.
- Aerospace and Defense: The MC7915BT is also used in aerospace and defense applications due to its reliability and performance over a wide temperature range.
Q & A
- What is the output voltage of the MC7915BT?
The MC7915BT provides a fixed output voltage of -15 V.
- What is the maximum output current of the MC7915BT?
The MC7915BT can supply up to 1.0 A of output current.
- What is the dropout voltage of the MC7915BT?
The dropout voltage of the MC7915BT is 1.3 V.
- Does the MC7915BT have built-in thermal shutdown and current limiting?
- What is the operating temperature range of the MC7915BT?
The MC7915BT operates over a temperature range of -40°C to +125°C.
- What are some common applications of the MC7915BT?
The MC7915BT is commonly used in power supplies, industrial control systems, telecommunications equipment, medical devices, and aerospace and defense applications.
- How does the MC7915BT ensure stable output voltage?
The MC7915BT ensures stable output voltage through excellent line and load regulation.
- What is the ripple rejection of the MC7915BT?
The ripple rejection of the MC7915BT is 60 dB at 120 Hz.
- What is the average temperature coefficient of output voltage for the MC7915BT?
The average temperature coefficient of output voltage for the MC7915BT is -1.0 mV/°C.
- What package types are available for the MC7915BT?
The MC7915BT is available in the TO-220 package type.
