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[AP1400] 016011190-E-00-PB 2016/09 - 1 - 1. General Description The AP1400 is a multichannel system power supply IC that has a 4ch DC-DC converter and a 2ch LDO, supporting input voltage up to 12V. It integrates a start sequence circuit, a current sense circuit, an external load switch control circuit, and various protection functions. A power supply system can be simply designed with the AP1400. In addition, the standby current is very low at 19 μA. The AP1400 is housed in a small 65-pin WLCSP package, making it ideal for portable equipment such as digital single lens reflex cameras and mirrorless cameras. 2. Features  Operation Input Voltage 4.0 to 12.0 V  Startup Sequence The AP1400 can set th e startup sequence and start time of each regulator by register settings.  Protection Function Pre-start Abnormal Voltage Detection, Short-circuit Protection, Overvoltage Protection, Thermal Protection, Undervoltage Protection.  Standby Current 19 μA (max)  Operation Current 10 mA (max)  DC-DC Converter Soft Start, Output Discharge Function Buck-boost Buck 1ch 3ch DDC1: 5.3V / 700mA(max), Built-in FET DDC2: 4.25V / 2300mA(max), Built-in FET DDC3: 3.3V / 4000mA(max), External FET DDC4: 4.0V / 600mA(max), Built-in FET Switching Frequency Selectable from 1 to 2.57 MHz Recommended Frequency DDC1/2/4: 2 MHz, DDC3: 1 MHz External CLK Synchronization From 1.5 to 2.5 MHz  Internal Oscillation Frequency Accuracy ±3% (max) Ta=25°C, ±7% (max) -20 to 60°C  Load Switch 2ch LDSW1: Ronmax=200mΩ Constant Current Control, Output Discharge Function LDSW2: Ronmax=200mΩ  LDO 2ch Always-On LDO5: 5.0V / 50mA(max) EN= “L”, 250mA(max) EN= “H” LDO3: 3.3V / 50mA(max)  Current Sense 3ch Sense Current Range: 0 to 6.4A External Load Switch Control (with latch function) CS1: Gain x20, x40, x100 Analog Output (Maximum Output Voltage: 3.2V, Settling Time: 20μs) CS2: Gain x20, x40 CS3: Gain x20, x40  Power Good Output Start Detection Function for 4ch DC-DC Converter and External 2ch LDO 2 cell, Multi-channel System Power Control IC AP1400

Figure 1. Block Diagram

Figure 2. Pin Configurations

[AP1400] 016011190-E-00-PB 2016/09 - 5 - 6. Revision History Date (Y/M/D) Revision Page Contents 2016/09/01 00 - First Edition IMPORTANT NOTICE 0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products. 1. All information included in this document are provided only to illustrate the operation and application examples of AKM Products. AKM neither makes warranties or representations with respect to the accuracy or completeness of the information conta ined in this document nor grants any license to any intellectual property rights or any other rights of AKM or any third party with respect to the information in this document. You are fully responsible for use of such information contained in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS. 2. The Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact, including but not limited t o, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance- related fields. Do not use Product for the above use unless specifically agreed by AKM in writing. 3. Though AKM works continually to improve the Product’s quality and reliability, you are responsible for complying with safety standards and for providing adequate designs and safeguards for your hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. 4. Do not use or otherwise make available the Product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). When exporting the Products or related technology or any information contained in this document, you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations. The Products and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 5. Please contact AKM sales representative for details as to environmental matters such as the RoHS compatibility of the Product. Please use the Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. AK M assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 6. Resale of the Product with provisions different from the statement and/or technical features set forth in this document shall immediately void any warranty granted by AKM for the Product and shall not create or extend in any manner whatsoever, any liability of AKM. 7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of AKM.