Stock Name: 希荻微
Stock Code: 688173
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Stock Name: 希荻微
Stock Code: 688173
- All
- Product Management
- News Information
- Introduction Content
- Corporate Outlets
- Frequently Asked Questions
- Corporate Video
- Corporate Album
New Product Express | Halo Microelectronics Launches 1A High-Efficiency & Low-Power Buck DC-DC Chip HL7547
December 30, 2025
As portable terminals such as wearables and fitness trackers evolve toward multi-functionality and longer battery life, they demand higher integration, efficiency, and flexibility from power management chips. Following the launch of the HL7542 and HL7546 series, Halo Microelectronics Co., Ltd. (hereinafter referred to as "Halo Microelectronics") introduces the 1A high-efficiency, low-power synchronous buck DC-DC chip HL7547. With core advantages including ultra-low power consumption, high-precision regulation, and high reliability, this product delivers a more competitive power solution for portable devices.
Product Overview
HL7547 is a synchronous buck converter optimized for portable applications, featuring an input voltage range of 2.3V-5.5V and a maximum output current of 1A, suitable for various power supply scenarios. It integrates automatic PFM/PWM switching mode: PFM mode reduces power consumption under light load, while PWM mode ensures stable output under heavy load, maintaining over 92% conversion efficiency even at 1mA light load. Adopting a 1.54mm×0.77mm 8-pin WLCSP package and a high switching frequency of 1.5MHz, it significantly minimizes the size of external components, perfectly meeting the miniaturization needs of devices.
Core Advantages
1. Ultra-Low Power Consumption & High Efficiency: Operating quiescent current is only 3.3μA, and shutdown mode current is less than 0.2μA, significantly extending device battery life. High conversion efficiency across the entire load range balances energy savings and performance.
2. Flexible & Precise Voltage Regulation: Supports 0.3V-1.3V DVS output (10mV step), configurable via VSEL pin or I2C interface (WL01/02 models), with output voltage accuracy of 1%, adapting to the power supply requirements of different components.
3. High Integration & Comprehensive Protection: Built-in power MOSFET, soft-start circuit, and multiple protections (UVLO, overcurrent, short circuit, thermal shutdown). No complex external circuits are required, enhancing system stability and reliability.
4. Compact Package & Rich Functions: Ultra-small WLCSP package fits space-constrained scenarios. Some models are equipped with Power Good (PG) function, facilitating system startup timing control and status monitoring.
Application Scenarios
HL7547 is widely applicable to wearable devices such as smartwatches and fitness trackers, as well as to end products with stringent requirements for power consumption, size, and reliability, including IoT sensors and portable audio devices.
About Halo Microelectronics
Halo Microelectronics(Stock Code: 688173) develops analog and power management integrated circuits enabling energy-efficient smart systems. Since 2012, Halo Microelectronics has been driving innovation in Mobile, IoT, and Automotive systems. Find out more at: http://www.halomicro.com.
About Halo Microelectronics
Halo Microelectronics(Stock Code: 688173) develops analog and power management integrated circuits enabling energy-efficient smart systems. Since 2012, Halo Microelectronics has been driving innovation in Mobile, IoT, and Automotive systems. Find out more at: http://www.halomicro.com.
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