TI Battery Management ICs Enable Safer, More Efficient Charging in Smart Phones, Portable Appliances

Aug 19, 2004
TI battery charge

Providing increased power management functionality in smaller integrated circuits (ICs), Texas Instruments Incorporated (TI) (NYSE: TXN) announced today two new families of single-chip, battery charge and power management ICs that provide safer, more efficient charging capabilities for single-cell lithium-ion (Li-Ion) applications.

The bqTINYTM III (or bq2403x) series of Li-Ion linear charge and system power path management devices is the latest advancement in TI´s bqTINY line of battery management charge ICs. In addition to integrated PowerFETs, high-voltage protection, current sensor, reverse-blocking protection, thermal regulation, high accuracy current and voltage regulation, the IC offers a dynamic power-path management (DPPM) feature.

The DPPM feature allows bqTINY III to power a smart phone, PDA, MP3 player or digital still camera while independently charging the battery. It autonomously selects the USB port or the AC adapter as the power source for the system when either input source is connected. In the absence of input sources, the bqTINY III powers the system from the battery through an integrated low RDSon power FET. The IC ensures a continuous and uninterrupted flow of power to the system, while reducing the number of charge and discharge cycles on the battery. The DPPM feature in bqTINY III also allows the system to power up with a defective or fully discharged battery pack.


First Single-Chip Charge IC and DC/DC Converter

In addition to the bqTINY III family, TI´s new bq2501x integrated charge and power management devices combine a battery charge IC with a low-power, highly efficient synchronous DC/DC conversion IC on a single chip to support space-limited, Li-Ion powered portable applications, such as Bluetooth headsets and accessories.


The bq2501x devices provide an integrated PowerFET, current sensor, reverse blocking protection and intelligent battery management features such as an automatic sleep mode. In addition, the new devices integrate a 150-mA DC/DC converter that provides up to 95 percent power conversion efficiency and can operate directly from a single-cell Li-Ion or Li-Poly battery. The output voltage is either adjustable (bq25010), or fixed at 3.3 V (bq25011), or at 1.8 V (bq25012).


Available Today

bqTINY III is in volume production from TI and its authorized distributors. The bq2501x family of battery charge and power management ICs is currently sampling with volume production scheduled for the fourth quarter, 2004. All bqTINY III devices are packaged in a small, 3.5 mm x 4.5 mm QFN package, and are priced at $2.30 each in quantities of 1,000 units. The bq2501x devices come in a 20-pin, MLP package (3.5 mm x 4. 5 mm) and are priced at $2.05 each in quantities of 1,000. Evaluation modules, application notes and TI´s VIP selection tool are available through power.ti.com.

Explore further: US judge rejects Apple bid to ban Samsung smartphones

add to favorites email to friend print save as pdf

Related Stories

Dead floppy drive: Kenya recycles global e-waste

Aug 22, 2014

In an industrial area outside Kenya's capital city, workers in hard hats and white masks take shiny new power drills to computer parts. This assembly line is not assembling, though. It is dismantling some ...

Qnovo finds way to speed up smartphone charging

Aug 12, 2014

No small setback: Those moments when your smartphone does not look smart at all, telling you it is about to die while you are in the middle of somewhere, looking for an outlet, dreading the waiting time it ...

Porsche adds Cayenne S E-Hybrid to 2015 lineup

Aug 04, 2014

Porsche is positioning its Cayenne as a sports car among sport utility vehicles (SUVs), offering seating for five paired with the high-performance driving experience associated with the brand name. One entrant ...

Asian inventions dominate energy storage systems

Aug 19, 2014

In recent years, the number of patent applications for electrochemical energy storage technologies has soared. According to a study by the Technical University Munich, the largest volume of applications is ...

To bolster lithium battery life, add a little salt

Aug 14, 2014

(Phys.org) —Cornell chemical engineers have achieved a breakthrough in the race to achieve safer, longer-lasting batteries to power the world's automobiles, cell phones, computers and autonomous robots.

Looking at San Francisco through Google Glass

Aug 12, 2014

After you slip on Google Glass - the new computer you wear on your face - you get things rolling with the voice command, "OK, Glass." Then you tell the eyeglass-like contraption what you want it to do - take ...

Recommended for you

Visual search to shop: gimmick or game changing?

7 hours ago

Imagine using your phone to snap a photo of the cool pair of sunglasses your friend is wearing and instantly receiving a slew of information about the shades along with a link to order them.

WEF unveils 'crowdsourcing' push on how to run the Web

7 hours ago

The World Economic Forum unveiled a project on Thursday aimed at connecting governments, businesses, academia, technicians and civil society worldwide to brainstorm the best ways to govern the Internet.

Nigeria launches national identity card scheme

7 hours ago

Nigeria's President Goodluck Jonathan on Thursday launched a national electronic identity card scheme, which backers said would boost access to financial and government services in Africa's most populous nation.

SHORE facial analysis spots emotions on Google Glass

7 hours ago

One of the key concerns about facial recognition software has been over privacy. The very idea of having tracking mechanisms as part of an Internet-connected wearable would be likely to upset many privacy ...

User comments : 0