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AP2112K-3.3TRG1

600mA LDO, 3.3V, 250mV dropout, 72dB PSRR, SOT-23-5, Diodes Inc AP2112

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Manufacturer Part：

AP2112K-3.3TRG1

Package：

SOT-23-5 (2.9 x 1.6 x 1.15mm)

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Description

Product Overview

The Diodes Inc AP2112K-3.3TRG1 is a 600mA LDO providing a fixed 3.3V output in SOT-23-5 package. With 250mV dropout at 600mA, 55uA quiescent current, and 72dB PSRR at 1kHz, it provides a cost-effective 3.3V regulation solution for consumer and IoT applications.

Key Specifications

Output Voltage 3.3V (fixed)
Output Current 600mA
Input Voltage 2.5V to 6.0V
Dropout Voltage 250mV @ 600mA
Quiescent Current 55uA (typical)
PSRR 72dB @ 1kHz
Output Noise 40uVrms (10Hz-100kHz)
Accuracy ±1.5%
Package SOT-23-5
Operating Temperature -40°C to +85°C

Features

  • 600mA output current
  • 250mV low dropout
  • 72dB PSRR at 1kHz
  • 55uA quiescent current
  • Stable with 1uF ceramic output
  • Enable pin for power sequencing

Applications

  • IoT device 3.3V power
  • MCU 3.3V rail from Li-ion
  • RF module clean power
  • Consumer electronics 3.3V
  • USB-powered devices

The Diodes Inc AP2112K-3.3TRG1 is a 600mA LDO providing a fixed 3.3V output with 250mV dropout and 72dB PSRR in SOT-23-5 package. It offers an excellent cost-to-performance ratio for consumer and IoT applications requiring clean 3.3V power from single-cell Li-ion or 5V USB supplies.

The AP2112K-3.3TRG1 uses a CMOS LDO architecture with PMOS pass transistor. The 55uA quiescent current provides a good balance between battery life and regulation performance. The 72dB PSRR at 1kHz effectively suppresses input supply noise, making it suitable for noise-sensitive RF and analog circuits. The device is stable with only 1uF ceramic output capacitor, minimizing solution size and cost.

Pin Name Type Function
1 VIN Input Input supply (2.5-6.0V)
2 GND Ground Ground
3 EN Input Enable (active high)
4 NC – No connect (BP for some variants)
5 VOUT Output 3.3V regulated output
  • IoT sensor node 3.3V power from Li-ion battery
  • MCU VDD 3.3V regulation in consumer devices
  • Wi-Fi/BLE module 3.3V clean supply
  • USB-powered 3.3V device power rail
  • Wearable device 3.3V power management
Manufacturer Part Number Package Notes
TI TLV70033DDCR SOT-23-5 300mA, 25uA Iq
Richtek RT9193-33GB SOT-23-5 300mA, ultra-low noise
onsemi NCP511SN33T1G SOT-23-5 150mA, 30uVrms
Microchip MIC5219-3.3YM5-TR SOT-23-5 500mA, low noise
Diodes Inc AP2127K-3.3TRG1 SOT-23-5 300mA, ultra-low Iq
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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