会社ブログについて Mingjiada Supplies Texas Instruments (TI) Battery Charger ICs for Portable Applications with Limited Space

Introduction: With portable devices such as smartphones, TWS earphones, smartwatches and drones becoming increasingly compact, achieving efficient and safe battery charging management within limited space has become a key challenge for hardware engineers. Shenzhen Mingjiada Electronics Co., Ltd. (hereinafter referred to as ‘Mingjiada’) has been deeply involved in the electronic components industry for nearly 30 years and has long supplied the full range of TI battery charger ICs. Below is an overview of the key TI battery charger IC models supplied by Mingjiada, which are suitable for space-constrained portable applications.

I. Why Choose TI Battery Charger ICs?

Texas Instruments’ (TI) battery charger chips are renowned for their high integration and intelligent features, and are widely used in mobile devices, laptops, portable medical equipment and industrial equipment. TI’s battery charger product range encompasses various types, including linear chargers, switch-mode chargers and buck-boost chargers, and is compatible with a wide range of battery types such as lithium-ion, lithium-polymer and lithium iron phosphate batteries. For space-constrained portable applications, TI offers a comprehensive product portfolio ranging from ultra-compact 2mm × 2mm packages to highly integrated power path management chips.

II. Overview of Mingjiada’s Key Supply Models

1. BQ24800 – SMBus 1–4-cell buck battery charge controller

The BQ24800 is an intelligent battery charge controller based on the SMBus interface, specifically designed for 1 to 4-cell series-connected lithium-ion or lithium-polymer battery packs.

Package size: 28-WQFN (4 mm × 4 mm)

Input voltage: Wide input range from 6 V to 24 V

Key advantages: Utilises a synchronous buck architecture and supports Dynamic Power Management (DPM). Features a built-in high-precision ADC and temperature monitoring function, enabling real-time monitoring of battery voltage, current and temperature. Supports multiple charging modes (pre-charge, constant current, constant voltage and cut-off phases). The compact 4×4 mm package design is particularly suitable for portable devices with limited space.

Typical applications: Laptops, ultrabooks, tablets, industrial and medical equipment

2. BQ24715 – NVDC Architecture 2- to 3-Cell Battery Charger Controller

The BQ24715 is a synchronous buck battery charger controller based on the NVDC (Narrow Voltage DC) architecture.

Package size: VQFN-20 (3.5 mm × 3.5 mm)

Input voltage: 6V to 24V

Key advantages: Ultra-fast transient response of 100µs and ultra-low quiescent current of 500µA. Supports instant-on operation of the system in the absence of a battery or when the battery is deeply discharged. Supports adjustable switching frequencies of 600kHz, 800kHz and 1MHz. The ultra-compact 3.5×3.5mm package makes it an ideal choice for applications with extremely limited space.

Typical Applications: Ultrabooks, laptops, tablets, portable devices

3. BQ24203 – 500mA Single-Cell Lithium-Ion Linear Charger

The BQ24203 is a simple lithium-ion linear charge management device designed specifically for low-cost and space-constrained charger applications.

Package Size: HVSSOP-8 (3.00mm wide)

Charging current: up to 500mA (programmable)

Battery pack voltage: 4.1V

Key advantages: Integrates a power MOSFET, high-precision voltage regulation (accuracy of 0.5%), temperature monitoring, charge status and charge termination functions within a single monolithic device. Standby current as low as 15µA. Supports battery insertion/removal detection and pre-charge regulation with a safety timer.

Typical Applications: Bluetooth headsets, smartwatches, small medical devices, low-power IoT devices

4. BQ24259 – I²C-controlled 2A single-cell USB charge management IC

The BQ24259 is a highly integrated switch-mode battery charge management and system power path management device, specifically designed for single-cell lithium-ion and lithium-polymer batteries.

Package Size: VQFN-24 (4 mm × 4 mm)

Input voltage: 3.9 V to 6.2 V, overvoltage protection at 6.4 V

Maximum charging current: 2 A (programmable)

Key advantages: Charging efficiency of up to 90 per cent; NVDC power path management enables instant system start-up when the battery is depleted or absent; supports USB OTG functionality, providing an adjustable 5 V/1.5 A output; quiescent current of just 20 µA.

Typical applications: drones, smartphones, tablets, portable devices

5. BQ24075 – High-efficiency linear battery charger

The BQ24075 is TI’s classic linear battery charger IC, responsible for efficiently and safely converting an external power supply into a voltage and current suitable for battery charging.

Key advantages: highly integrated, highly reliable linear charging solution

Typical applications: various portable consumer electronic devices

6. BQ24725 – High-Efficiency Synchronous Battery Charger

The BQ24725 is a high-efficiency synchronous battery charger that requires fewer components, making it suitable for multi-chemistry battery charging applications where space is limited.

Package: 20-VQFN

Typical applications: Portable laptops, UMPCs, ultra-thin laptops, handheld terminals, industrial and medical equipment

III. Advantages of Mingjiada’s Supply Services

As an authorised independent distributor with nearly 30 years’ experience in the industry, Mingjiada Electronics offers customers the following guarantees:

Genuine Product Guarantee: All products are sourced from reliable channels, ensuring they are genuine, original items with clear and traceable origins

Adequate Stock: With warehousing centres in Shenzhen and Hong Kong, we maintain ample stock on hand, comprising over 2 million SKUs, enabling us to respond swiftly to customer requirements

Flexible Procurement: We support both small-batch sample orders and large-volume procurement requirements, providing a one-stop electronic component supply service

IV. Contact Details

Company Name: Shenzhen Mingjiada Electronics Co., Ltd.

Official Website: https://www.integrated-ic.com/

Sales Hotline: +86 13410018555 (Mr Chen)

Company Telephone: 86-755-83294757

Email: sales@hkmjd.com

Company Address: Rooms 1239–1241, New Asia Guoli Building, Zhenzhong Road, Futian District, Shenzhen, Guangdong Province