| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Sharp Microelectronics |
IC REG LINEAR 2.9V 150MA SOT23-5 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR POS ADJ 1A TO220-4 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 5V 500MA SC63 |
0 |
|
 |
Sharp Microelectronics |
IC REG LIN 2.5V 150MA SOT23L-6 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR POS ADJ 1A TO220-5 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 5V 7A TO220-5 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 3.3V 1A SC63 |
0 |
|
 |
Sharp Microelectronics |
IC REG LIN 3.3V 150MA SOT23L-6 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 12V 1A SC63 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 12V 800MA TO220-4 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 15.7V 1A TO220-4 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 3.6V 150MA SOT23-5 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 5V 150MA SOT23-5 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 3.8V 150MA SOT23-5 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR POS ADJ 10A TO3P |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 3.5V 150MA SOT23-5 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 3.3V 150MA SOT23-5 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 5V 2A TO220-4 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 4.9V 150MA SOT23-5 |
0 |
|
 |
Sharp Microelectronics |
IC REG LINEAR 2.2V 150MA SOT23-5 |
0 |
|
Linear Voltage Regulators (LVRs) are critical components in Power Management Integrated Circuits (PMICs) that provide stable output voltage levels by dissipating excess input energy as heat. Unlike switching regulators, LVRs operate without high-frequency switching, making them ideal for noise-sensitive applications. Their importance in modern electronics includes ensuring power integrity in portable devices, industrial equipment, and automotive systems.
| Type | Functional Features | Application Examples |
|---|---|---|
| Low Dropout (LDO) Regulators | Maintain regulation with minimal input-output voltage differential (e.g., 100mV) | Mobile device sensors, RF circuits |
| Quasi-LDO Regulators | Balance dropout voltage and load current capability | Intermediate power stages in IoT devices |
| Dual/Multi-Output LVRs | Single-chip solutions with multiple regulated outputs | Application processors in smartwatches |
| High-Precision LVRs | 0.5% output voltage accuracy with temperature compensation | Medical imaging sensors, test equipment |
Typical LVR architecture includes:
Common packages: QFN (3x3mm), TSSOP, WLCSP for portable devices. High-power variants use flip-chip with exposed thermal pads.
| Parameter | Description | Importance |
|---|---|---|
| Input Voltage Range | Operational voltage limits (e.g., 2.7V-5.5V) | Determines compatibility with power sources |
| Output Voltage Accuracy | Deviation from nominal value ( 1% to 3%) | System stability and component protection |
| Dropout Voltage | Minimum Vin-Vout for regulation (e.g., 30mV-300mV) | Battery life optimization in portable devices |
| Output Current Capability | Max continuous load current (100mA-3A) | Application scalability |
| PSRR (Power Supply Rejection Ratio) | Noise attenuation at specific frequencies (e.g., 70dB at 1kHz) | Signal integrity in analog circuits |
| Quiescent Current | Standby power consumption (1 A-100 A) | Battery efficiency in always-on systems |
| Manufacturer | Product Series | Key Features |
|---|---|---|
| Texas Instruments | TPS7A49 | 150mA, 18V input, 75dB PSRR @ 1kHz |
| STMicroelectronics | LDL1117 | 1A output, adjustable via resistor divider |
| Analog Devices | ADP151 | 200mA, 25 A quiescent current, 200mV dropout |
| ON Semiconductor | NCP1117 | 1A, thermal overload protection, automotive-grade |
Key selection criteria:
Case Study: A wearable ECG monitor used Analog Devices ADP150 (150mA, 2.2V output, 15 A IQ) to achieve 14-day battery life.