AS3709-BQFM-00

Voltage/Current - Output 3:	0.6125 V ~ 3.35 V, 1A
Supplier Device Package:	32-QFN (4x4)
Package / Case:	32-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	2.7 V ~ 5.5 V
w/Sequencer:	No
w/Supervisor:	Yes
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	0.6125 V ~ 3.35 V, 1A
Voltage/Current - Output 1:	0.6125 V ~ 3.35 V, 1A
Frequency - Switching:	2MHz ~ 4MHz
Number of Outputs:	7
Function:	Any Function
Topology:	Step-Down (Buck) Synchronous (5), Linear (LDO) (2)
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

AS3709-BQFM-00 is an integrated linear + switching power management integrated circuit (PMIC) developed by Analogix Semiconductor designed to control the power supply of mobile devices by providing a low-voltage power system, regulating power and I/O supply to deliver better battery life. The AS3709-BQFM-00 integrates multiple voltage regulators, power sequencing, current sensing, and sequencing control logic into one package, enabling higher system efficiency and more reliable operation.

Application Field

The AS3709-BQFM-00 PMIC is suitable for a variety of mobile devices, from smart phones to tablets and other portable consumer electronics. The PMIC provides superior mobile device performance by providing improved power control and efficient system-level power delivery, allowing the mobile device to run longer before needing to be recharged.The AS3709-BQFM-00 also supports a wide range of power requirements, from low-power applications such as flashlights and music players to higher-power applications such as gaming consoles and multi-core processors. Additionally, the AS3709-BQFM-00 can be used for power sequencing and power control applications, and offers flexible programmability to accommodate different system requirements.

Working Principle

The AS3709-BQFM-00 PMIC works by regulating the voltage and current applied to the power supply. The power supply itself consists of multiple components, including the battery, the DC-DC converter and the power circuitry (such as the voltage regulator). The AS3709-BQFM-00 PMIC couples with the power circuitry and provides intelligent control of the voltage and current being applied.When the mobile device draws current, the AS3709-BQFM-00 PMIC senses the change and quickly adjusts the power accordingly. This helps to maintain the desired voltage and current output, resulting in quite efficient operation.Additionally, the AS3709-BQFM-00 PMIC has a built-in power sequencing controller. This controller works in tandem with the voltage regulator to ensure a smooth transition in power states. For example, when the phone goes from a low-power state to a full-power state, the power sequencing controller will manage the voltage, current and system requirements, ensuring that all components receive the correct power necessary for them to function correctly.

Conclusion

The AS3709-BQFM-00 PMIC is a versatile and powerful integrated circuit for mobile devices. It enables improved power control and efficient system-level power delivery, allowing the mobile device to run longer before needing to be recharged. Additionally, it supports a wide range of power requirements and offers programmability to accommodate different system requirements, making it suitable for a variety of mobile devices.

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