Diodes Incorporated AP734 series Low Dropout Regulators

Features and Applications of AP734 series Low Dropout Regulators

The purpose of this article is to briefly illustrate what is possible with Low Dropout Regulators and the features and applications of these regulators manufactured by Diodes Incorporated under the AP734 series.

Applications

  • Portable electronics
  • Medical
Associated Products

Part NumberDescriptionStockRFQ
AP7343D-11W5-7IC REG LINEAR 1.1V 300MA SOT2551000BUY
AP7343-285W5-7IC REG LINEAR 2.85V 300MA SOT257BUY
AP7343D-23W5-7IC REG LINEAR 2.3V 300MA SOT257BUY
AP7343-295W5-7IC REG LINEAR 2.95V 300MA SOT2544BUY
AP7343D-16W5-7IC REG LINEAR 1.6V 300MA SOT257BUY
AP7343D-20W5-7IC REG LINEAR 2V 300MA SOT2533BUY
AP7343D-15W5-7IC REG LINEAR 1.5V 300MA SOT2515000RFQ
AP7343D-33W5-7IC REG LINEAR 3.3V 300MA SOT2525448BUY
Technical Documents

System-on-chip processors integrate low-dropout (LDO) voltage regulators (VRs) to improve energy efficiency by allowing each core on a shared input voltage rail to operate at a unique voltage. LDOs enable compact size, low cost, and relatively simple integration while avoiding large inductors or capacitors. This tutorial introduces the key trade-offs between analog and digital LDOs. Then, the presentation focuses on the basics of digital LDO designs while covering the primary specifications of transient response, load regulation, current efficiency, load-current range, and dropout voltage. Finally, this tutorial presents a wide range of state-of-the-art LDOs while highlighting the key design trade-offs.

Basics of Digital Low-Dropout (LDO) Integrated Voltage Regulators - Presented by Mingoo Seok


The AP734 series of LDOs is designed for low-power applications with a stable and accurate voltage source. They are available in a small SOT-23 package and have a wide input voltage range of 2.5V to 6.0V, making them ideal for battery-powered applications. The LDOs have a maximum output current of 300mA and can operate in a wide temperature range of -40°C to 85°C. They also have over-temperature and over-current protection, ensuring the device's safe operation in harsh environments.

Features

The main features of AP734 series Low Dropout Regulators may be summarized as follows:

1. Low dropout voltage of 140mV (typical)

2. Output voltage options range from 1.2V to 5.0V

3. Maximum output current of 300mA

4. Very low quiescent current of 35µA (typical)

5. Over-temperature and over-current protection

Applications

  • Battery-powered devices

  • Portable electronics

  • Low-power microcontrollers

  • IoT devices

  • Medical devices

The AP734 LDOs are suitable for various consumer electronic applications, including smartphones, tablets, set-top boxes, and gaming consoles. The AP734 LDOs can be used in industrial automation applications, such as factory automation systems, motor control, and power supplies.


Frequently Asked Questions

What is the input voltage range of the AP734 series LDOs?

The input voltage range of the AP734 series LDOs is 2.5V to 5.5V.

What is the dropout voltage of the AP734 series LDOs?

The dropout voltage of the AP734 series LDOs is typically 0.3V at 150mA.

What is the maximum output current of the AP734 series LDOs?

The maximum output current of the AP734 series LDOs is 300mA.