從較高的輸入電壓取得穩定的輸出電壓，低壓差穩壓器 (LDO) 可謂是簡易且極具成本效益的方式。LDO 因具有無切換雜訊且小尺寸的優點，廣泛用於各類產品應用，使系統設計更加簡易。
Diodes 公司擁有廣泛的 LDO 產品組合，範圍涵蓋眾多不同功能的產品，例如超低靜態電流 (IQ)、高電源抑制比 (PSRR)、寬輸入電壓、小尺寸及高電流等。
Small-size LDOs | High PSRR LDOs | Low IQ LDOs | Wide Input Voltage LDOs | High Current LDOs | Automotive LDOs
Small-size LDOs: Small form factor
Electronic miniaturization is now mainstream requiring chip-scale or near chip-scale components to meet the size and density requirements. Diodes' Small-size LDOs accomplish this challenging task and deliver the same high-quality performance while consuming as little space as possible.
| Part Number | Description | Package Size (mm) | Datasheet | Order Options |
| AP7350 | 150mA, Ultra-Low IQ in Ultra-Small 0.64-mm x 0.64-mm WLCSP | X2-WLB0606-4 (0.64×0.64) | Download | Buy Now |
| AP7340 | 150mA, 1% Accuracy, Low Noise LDO | X2-DFN1010-4 (1×1) | Download | Buy Now |
| AP7341 | 300mA, Low IQ for RF application | X2-DFN1010-4 (1×1) | Download | Buy Now |
| AP7346 | Dual 130mA, High Accuracy Current Limit | X2-DFN1212-6 (1.2×1.2) | Download | Buy Now |
| AP7342 | Dual 150mA, High PSRR, Low Noise LDO | X2-DFN1212-6 (1.2×1.2) | Download | Buy Now |
| AP7344 | Dual 300mA, High PSRR LDO | X2-DFN1612-8 (1.6×1.2) | Download | Buy Now |
| AP7348 | Quad 300mA, High PSRR LDO | X2-DFN1612-8 (1.6×1.2) | Download | Buy Now |
| AP7353 | 250mA, High PSRR LowNoise LDO with Enable | WLB0707-4 (0.7 V 0.7) | Download | Buy Now |
High PSRR LDOs: Clean up your power supply 
High PSRR LDOs effortlessly power any system in a rough power supply environment. They provide high rejection on the power supply noise to provide clean, DC power to ensure system reliability.
| Part Number | Description | PSRR (dB) | Datasheet | Order Options |
| AP7330 | 300mA, Low Noise LDO with Enable | 80 | Download | Buy Now |
| AP7340 | 150mA, 1% Accuracy, Low Noise LDO | 75 | Download | Buy Now |
| AP7343 | 300mA, Low Dropout with Enable (SOT25) | 75 | Download | Buy Now |
| AP7353 | 250mA, High PSRR LowNoise LDO with Enable (DFN1010, WLB0707) | 90 | Download | Buy Now |
| AP7361C | 1A, Low Dropout with Short Circuit Protection | 75 | Download | Buy Now |
Every day more and more battery-powered products are being introduced into our daily lives. Low IQ LDOs can help to extend the battery life of these essential devices. Preserving energy is the task of today’s electronic devices, and by minimizing the quiescent current of an LDO, our products help to achieve low standby power across a variety of applications.
| Part Number | Description | IQ (µA) | Datasheet | Order Options |
| AP7350 | 150mA, Ultra-Low IQ, in Ultra-Small 0.64-mm x 0.64-mm WLCSP | 0.25 | Download | Buy Now |
| AP7351 | 150mA, Ultra-Low IQ, in DFN1010 | 0.50 | Download | Buy Now |
| AP7354 | 150mA, Ultra-Low IQ, Low-Dropout | 0.25 | Download | Buy Now |
| AP2138 | 250mA, Low IQ LDO | 1 | Download | Buy Now |
| AP2139 | 250mA, with Fast Output Discharge | 1 | Download | Buy Now |
Diodes’ wide input voltage LDOs, up to 40 volts, provide simple, cost-effective solutions to supply MCUs, Embedded systems, sensors, and other active components when facing a high-voltage environment. The high accuracy and current limit functions make any design more reliable and robust.
| Part Number | Description | VIN Max (V) | Datasheet | Order Options |
| AP2205 | 200mA, high accuracy, high ripple rejection, low dropout voltage, low noise, current limit, and ultra-low quiescent current | 24 | Download | Buy Now |
| AP7370 | 300mA high accuracy, low dropout voltage, current limit, reverse current protection, and ultra-low quiescent current | 18 | Download | Buy Now |
| AP7380 | 150mA, Ultra-Low IQ, +/-1% Accuracy LDO with Current Limit and Enable | 24 | Download | Buy Now |
| AP7383 | 150mA, Ultra-Low IQ, Low dropout voltage With Excellent Line/Load Regulation | 30 | Download | Buy Now |
| AP7381 | 150mA, Low IQ, With Short Current Protection Function | 40 | Download | Buy Now |
| AP7384 | 50mA, Low IQ, With Excellent Line/Load Regulation | 40 | Download | Buy Now |
High-current LDOs: Heavy load, Avoid switching noise 
Switching noise can threaten performance in many applications. Our high current LDOs up to 3A provides clean, accurate, and efficient power for those heavy, sensitive loads. Additional High-PSRR featured LDOs eliminate ripple, offer high output accuracy (1% max), and deliver low dropout of 330mV and below.
| Part Number | Description | IOUT (A) | Datasheet | Order Options |
| AP7366 | 600mA, Low IQ with Fast Transient | 0.6 | Download | Buy Now |
| AP7361C | 1A, Low IQ With Short Circuit Protection | 1 | Download | Buy Now |
| AP7173 | 1.5A, With Programmable Soft-Start | 1.5 | Download | Buy Now |
| AP7176B | 3A, Ultra Low Dropout LDO With Enable | 3 | Download | Buy Now |
Automotive LDOs: Compliant to AEC-Q100 with a Grade 1 (-40C to +125C) temperature rating
Diodes Automotive LDOs feature a high power supply rejection ratio (PSRR) of 75dB at 1kHz to deliver stable output voltages suitable for automotive applications, such as point of load power supplies in ADAS, RF communications, cameras, and infotainment systems. The products are available with or without an output discharge function.
| Part Number | Description | IOUT (mA) | Datasheet | Order Options |
| AP7315Q | HIGH PSRR, LOW NOISE WITH ENABLE | 150 | Download | Buy Now |
| AP7343Q | HIGH PSRR, LOW NOISE WITH ENABLE | 300 | Download | Buy Now |
Technical Documents:
