Battery Charger IC Suitable For Handheld Equipment

Diodes Incorporated has introduced the API9221 lithium-ion/polymer battery charger IC, which is suitable for handheld equipment requiring both USB and AC/DC power adapter charging inputs. This dual-input IC enables USB host and DC adaptor connections, delivering charge currents in accordance with the USB standard or up to 1.2A respectively. To ensure that equipment can support a range of OEM and aftermarket chargers, the API9221 inputs can withstand a maximum voltage of 28V, reducing external protection component requirements.

To protect the IC, the battery and the system, the charger will suspend charging when the input voltage exceeds 5.4V on the USB input or 6.8V on the DC adaptor input. The IC outputs also feature reverse-current protection. The API9221 features a bypass LDO regulator, enabling a host controller to detect the connection of an out-of-specification supply voltage and safely keep the charger in its off-state condition until a valid supply is connected. The device is claimed to offer excellent thermal regulation and protection, with the ability to reduce charge current to keep the die temperature within safe operating conditions.

The API9221 follows the industry-standard CC/CV charging algorithm and enables USB and adaptor charge currents and end-of-charge currents to be user configured via external resistor settings. With only a one per cent error across the device's operating temperature range, the IC ensures battery charging up to 4.2V. Diodes Incorporated's API9221 battery charger IC is priced at USD0.93 (GBP0.64) each in 1,000-piece quantities.

Comments

Post a Comment

Popular posts from this blog

What is Class I Division 2?

Image
A Class I Division 2 is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment, or (2) In which ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment. Class I Division 2 Classification Class I Division 2 refers to the ANSI/ISA 12.12.01 standard. This standard was previously UL1604 until UL recommended the newer ANSI/ISA standard be used and that all hazardous location products be certified under this standa
Read more

FUSE SIZING CONSIDERATIONS FOR HIGHER EFFICIENCY MOTORS

Image
When selecting the proper fuse for short circuit protection in motor starting applications, it is important to not only ensure that the fuse will not nuisance open during motor start up times, but also that the fuse will coordinate as required with overload relays. When sizing fuses between 125% and 150% of the motor nameplate current, several advantages, including ease of coordination with an overload device, a smaller disconnect, and increased short circuit protection from a lower fuse rating, can be achieved. However, if sizing at this level prevents the motor from starting, it may then be necessary to increase the fuse ampere rating and it then becomes important to know the NEC sizing limitations. As of June 1, 2016, the US Department of Energy has mandated that newly manufactured electric motors will need to meet NEMA Premium® efficiency standards. As motor efficiencies increase, motor locked rotor currents can also be expected to increase. In addition to this, with across-the-lin
Read more

7/8 16UN Connectors that Provide 600 Volts and 15 Amps

TURCK announces new A-Size 3 and 4-pin 7/8 16UN powerfast™ connectors that provide up to 600 Volts and 15 Amps of power. These IP67 rated connectors provide a modular wiring system designed to handle high current applications for machine power distribution, while providing resistance to vibration commonly associated with conveyors, motors and material handling applications. The cordsets are available with a tray rated, exposed run PVC flexlife ® cable, with or without STOOW rating, and 14 AWG wires that allow you to replace hard wiring with a robust, quick disconnect system that saves the time and money spent installing a conduit system. The A-Size powerfast line offers male and female, straight connectors, standard and custom lengths, and pigtails or extensions. To make the system complete, fully encapsulated mating receptacles, with 1/2”-14 NPT mounting threads are available.
Read more