LP3966 - Régulateur de tension linéaire TEXAS INSTRUMENTS - Free user manual and instructions
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| Product Type | Low-Dropout Linear Voltage Regulator (LDO) |
| Manufacturer | Texas Instruments |
| Model | LP3966 |
| Output Current (Max) | 3 A |
| Input Voltage Range | 2.2 V to 7 V |
| Output Voltage Options | Adjustable (1.2 V to 5 V) or Fixed (1.5 V, 1.8 V, 2.5 V, 3.3 V) |
| Dropout Voltage (Typical) | 0.55 V at 3 A |
| Package Type | TO-220 (5-pin) or TO-263 (D2PAK) |
| Dimensions (TO-220) | 10.16 mm x 4.83 mm x 8.89 mm (excluding leads) |
| Weight (TO-220) | Approx. 1.5 g |
| Operating Temperature Range | -40°C to +125°C |
| Protection Features | Overcurrent Limitation, Thermal Shutdown, Reverse Battery Protection |
| Power Supply Requirements | External input capacitor and output capacitor (typically 1 µF to 10 µF) |
| Primary Applications | Microprocessor power, battery-powered equipment, post-regulation of switching supplies |
| Maintenance | No regular maintenance required; ensure proper heatsinking if high power dissipation |
| Safety Precautions | Avoid short circuits, do not exceed maximum input voltage (7V), ensure proper thermal management |
| Spare Parts / Reparability | Component-level replacement; standard soldering techniques applicable |
| RoHS Compliant | Yes (RoHS6/7) |
Frequently Asked Questions - LP3966 TEXAS INSTRUMENTS
What is the maximum output current of LP3966?
3 A.
What input voltage range does LP3966 support?
2.2 V to 7 V.
Can LP3966 be used with fixed output voltages?
Yes, it comes in fixed versions such as 1.5V, 1.8V, 2.5V, 3.3V, and also adjustable.
What is the dropout voltage of LP3966?
Typically 0.55 V at 3 A load.
Does LP3966 have protection features?
Yes, overcurrent limitation, thermal shutdown, and reverse battery protection.
What capacitors are recommended for LP3966?
Input capacitor of 1 µF and output capacitor of 1 µF to 10 µF, ceramic or tantalum.
What is the operating temperature range?
-40°C to +125°C.
In which packages is LP3966 available?
TO-220 (5-lead) and TO-263 (D2PAK).
How do I adjust the output voltage on adjustable version?
Use two external resistors to set the output voltage according to formula Vout = Vref * (1 + R1/R2), with Vref = 1.25V.
Can LP3966 be used for battery-powered devices?
Yes, its low dropout voltage makes it suitable for battery-powered applications requiring efficient regulation.
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USER MANUAL LP3966 TEXAS INSTRUMENTS
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Product information
Brand : TEXAS INSTRUMENTS
Model : LP3966
Category : Régulateur de tension linéaire