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Shenzhen Gobright TECH CO.,Ltd
Adress：
Block #5, the 4th Industry Park of Shuitian, Shiyan Town, Baoan Zone, Shenzhen, Guangdong, 518000, China.
Telephone: +86 755 86327335
Fax: +86 755 26901907
Mob: +8615889758291
QQ: 703118636
Skype: eric-gobright
E-mail：
eric@gogobright.com
Wechat: 369280335
Whatsapp: +8615889758291
News
Battery Management ICs Target Single-Cell
Updated: 2013-12-11 14:54:50 (GOBRIGHT NEWS DEPT)
National Semiconductor Corporation a global provider of power management technology, introduced two? battery-charging products for portable electronics, a single-cell USB/AC charger, and a charge control and protection circuit for embedded Lithium-Ion and Lithium-polymer batteries. Ideal for cellular phones, digital still cameras, MP3 players, personal digital assistants (PDAs) and handheld instrumentation, these devices require few external components and support up to 1.2 amps of a full-rated current.
The LP3947 charge management system and LM3655 battery protection IC offer extensive battery over-voltage and over-current protection, battery pre-conditioning and one percent charger voltage accuracy. They are available in thermally enhanced LLP (leadless leadframe) (LP3947) and micro SMD (LM3655) packaging.
"The LP3947 and LM3655 broaden National's portfolio of battery management and protection ICs designed to enhance system performance for highly integrated mobile devices," said Gianluca Colli, director of integrated system products for National Semiconductor's Portable Power Products Group. "By leveraging our packaging expertise, we are also able to offer customers these solutions in the industry's smallest packages."
The LP3947 is a complete charge management system that safely charges and maintains a Li-Ion battery from either a USB power source or an AC adaptor. Using the USB power source, the LP3947 supports both low-power or high-power charging. Alternatively, the LP3947 can take a charge from the AC adaptor. For the USB power source or AC adaptor, the charge current, battery regulation voltage and end-of-charge (EOC) point can be selected via an I2C compatible interface.
The LP3947 also can operate on default values that are pre-programmed in manufacturing. The battery temperature is monitored continuously at the temperature sensor pin to safeguard against hazardous charging conditions. The charger also has under-voltage and over-voltage protection, as well as an internal 5.6-hour timer to protect the battery. The pass transistor?? and charge current-sensing resistor are all integrated inside the LP3947.
National Semiconductor Corporation a global provider of power management technology, introduced two? battery-charging products for portable electronics, a single-cell USB/AC charger, and a charge control and protection circuit for embedded Lithium-Ion and Lithium-polymer batteries. Ideal for cellular phones, digital still cameras, MP3 players, personal digital assistants (PDAs) and handheld instrumentation, these devices require few external components and support up to 1.2 amps of a full-rated current.
The LP3947 charge management system and LM3655 battery protection IC offer extensive battery over-voltage and over-current protection, battery pre-conditioning and one percent charger voltage accuracy. They are available in thermally enhanced LLP (leadless leadframe) (LP3947) and micro SMD (LM3655) packaging.
"The LP3947 and LM3655 broaden National's portfolio of battery management and protection ICs designed to enhance system performance for highly integrated mobile devices," said Gianluca Colli, director of integrated system products for National Semiconductor's Portable Power Products Group. "By leveraging our packaging expertise, we are also able to offer customers these solutions in the industry's smallest packages."
The LP3947 is a complete charge management system that safely charges and maintains a Li-Ion battery from either a USB power source or an AC adaptor. Using the USB power source, the LP3947 supports both low-power or high-power charging. Alternatively, the LP3947 can take a charge from the AC adaptor. For the USB power source or AC adaptor, the charge current, battery regulation voltage and end-of-charge (EOC) point can be selected via an I2C compatible interface.
The LP3947 also can operate on default values that are pre-programmed in manufacturing. The battery temperature is monitored continuously at the temperature sensor pin to safeguard against hazardous charging conditions. The charger also has under-voltage and over-voltage protection, as well as an internal 5.6-hour timer to protect the battery. The pass transistor?? and charge current-sensing resistor are all integrated inside the LP3947.
