Overview
The L7915ACD2T-TR is a three-terminal negative voltage regulator produced by STMicroelectronics. It is part of the L79 series, which offers several fixed output voltages and is available in various packages, including TO-220, TO-220FP, and D²PAK. This regulator is designed to provide local on-card regulation, eliminating distribution problems associated with single-point regulation. It is particularly suited for split power supplies and can deliver up to 1.5 A of output current with adequate heat sinking.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Voltage | -14.7 | -15 | -15.3 | V |
| Output Current | -5 mA | -1 A | -1.5 A | A |
| Line Regulation | 300 mV | - | 300 mV | mV |
| Load Regulation | 300 mV | - | 300 mV | mV |
| Quiescent Current | 3 mA | - | 3 mA | mA |
| Output Voltage Drift | -0.9 mV/°C | - | -0.9 mV/°C | mV/°C |
| Output Noise Voltage | 250 µV | - | 250 µV | µV |
| Supply Voltage Rejection | 54 dB | - | 60 dB | dB |
| Dropout Voltage | 1.1 V | - | 1.1 V | V |
| Short Circuit Current | 0.7 A | - | 0.7 A | A |
Key Features
- Output current up to 1.5 A
- Fixed output voltage of -15 V
- Thermal overload protection
- Short-circuit protection
- Output SOA (Safe Operating Area) protection
- Output tolerance of 2% (AC version) or 4% (C version) at 25 °C
- Available in TO-220, TO-220FP, and D²PAK packages
Applications
The L7915ACD2T-TR is suitable for a wide range of applications, including:
- Local on-card regulation to eliminate distribution problems associated with single-point regulation
- Split power supplies, particularly where the same voltage options as the L78 positive standard series are required
- Adjustable voltage and current regulation with external components
Q & A
- What is the maximum output current of the L7915ACD2T-TR? The maximum output current is up to 1.5 A.
- What are the available packages for the L7915ACD2T-TR? It is available in TO-220, TO-220FP, and D²PAK packages.
- What is the fixed output voltage of the L7915ACD2T-TR? The fixed output voltage is -15 V.
- Does the L7915ACD2T-TR have thermal overload protection? Yes, it has thermal overload protection.
- What is the quiescent current of the L7915ACD2T-TR? The quiescent current is 3 mA at 25 °C.
- What is the dropout voltage of the L7915ACD2T-TR? The dropout voltage is 1.1 V at 1 A and 25 °C.
- Can the L7915ACD2T-TR be used for adjustable voltage regulation? Yes, it can be used with external components to obtain adjustable voltages and currents.
- What is the short-circuit current of the L7915ACD2T-TR? The short-circuit current is 0.7 A.
- What is the output noise voltage of the L7915ACD2T-TR? The output noise voltage is 250 µV from 10 Hz to 100 kHz at 25 °C.
- What is the supply voltage rejection of the L7915ACD2T-TR? The supply voltage rejection is 54 to 60 dB at 120 Hz.
