LP5910-1.8YKAR vs LP5907UVX-3.2/NOPB
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| Category | PMIC - Voltage Regulators - Linear | PMIC - Voltage Regulators - Linear |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | IC REG LINEAR 1.8V 300MA 4DSBGA | IC REG LINEAR 3.2V 250MA 4DSBGA |
| Package | Cut Tape (CT) | Cut Tape (CT) |
| Series | - | - |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 4-XFBGA, DSBGA | 4-XFBGA, DSBGA |
| Supplier Device Package | 4-DSBGA | 4-DSBGA |
| Output Type | Fixed | Fixed |
| Voltage - Output (Min/Fixed) | 1.8V | 3.2V |
| Voltage - Output (Max) | - | - |
| Current - Output | 300mA | 250mA |
| Output Configuration | Positive | Positive |
| Control Features | Enable | Enable |
| Voltage - Input (Max) | 3.3V | 5.5V |
| Number of Regulators | 1 | 1 |
| Voltage Dropout (Max) | 0.3V @ 300mA | 0.2V @ 250mA |
| Current - Quiescent (Iq) | 25 µA | 25 µA |
| Current - Supply (Max) | 350 µA | - |
| PSRR | 80dB ~ 25dB (100Hz ~ 2MHz) | 90dB ~ 60dB (100Hz ~ 100kHz) |
| Protection Features | Over Temperature, Reverse Polarity, Short Circuit | Over Temperature, Short Circuit |
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1. What are the characteristics of linear regulators?
Linear regulators have the characteristics of low cost, small package, few peripheral devices and low noise. There are many types of linear regulator packages, which are very suitable for use in LCD color TVs. For fixed voltage output applications, only 2-3 small capacitors are needed to form the entire solution. Ultra-low output voltage noise is the biggest advantage of linear regulators. The output voltage ripple is less than 35V (RMS), and it has an extremely high signal-to-noise control ratio, which is very suitable for powering small signal processing circuits that are sensitive to noise.
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2. How to choose a linear regulator?
1. Switching regulator: A switching regulator uses an output stage that repeatedly switches between "on" and "off" states to generate an output voltage together with an energy storage component. Its adjustment is achieved by adjusting the switching timing based on the feedback sample of the output voltage. In a fixed-frequency regulator, the switching timing is adjusted by adjusting the pulse width of the switching voltage, which is called PWM control.
2. Parameter regulator: LDO is a linear regulator. Linear regulators use transistors or FETs operating in their linear region to subtract excess voltage from the applied input voltage to produce a regulated output voltage. This transistor allows saturation, so the regulator can have a very low dropout voltage, usually around 200mV.
3. Regulators for laser cutting machines: According to the use requirements of high-power laser cutting machines and the current power supply situation in my country, regulators that meet -
3. What is the difference between a linear regulator and a resistor?
Linear regulators and resistors have significant differences in function, working principle and application scenarios.
Function and working principle:
A linear regulator is an electronic device that achieves a stable voltage output by adjusting linear elements (such as resistors, transistors, etc.) in the circuit. It uses the negative feedback principle. When the input voltage changes, the regulator senses this change and adjusts the parameters of the circuit elements (such as the resistance value or the conduction state of the transistor) accordingly to keep the output voltage stable within the required range. Linear regulators can provide lower output noise and fluctuations, and have better responsiveness to load changes.
Resistors are a basic electronic component used to limit current and divide voltage. It works by hindering the flow of current, has a fixed resistance value, and does not have the function of adjusting the output voltage.
Application scenarios:
Linear regulator -
4. Can a linear regulator be up?
Linear regulators cannot be boost.
The main function of a linear regulator is to stabilize the output voltage, protecting the electrical equipment from high or unstable voltage effects. It realizes a stable output voltage by adjusting the gap between the output voltage and the input voltage, but this process is limited to lowering the voltage, not including the voltage. The working principle of a linear regulator is to regulate the voltage by converting excess voltage into heat loss, thereby realizing the voltage regulation. This feature determines that it does not have the voltage function.
