OVP Device offers automatic USB/charger-detection capability.February 17, 2009 -
Incorporating on-board FET, FAN3989 detects presence of USB charger, eliminating external circuitry, and resulting in 15-20% of board space savings. It also monitors VBUS for over or under-voltage conditions, setting FLAG 2 pin low if VBUS is under 3.3 V or over 6.0 V, while turning off internal PMOS load switch. Suited for cell phone applications, unit comes in compact 8-lead MLP packaging, utilizes Pb-free terminals, and meets IPC/JEDEC standard for Pb-free reflow requirements.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Fairchild Semiconductor
3001 Orchard Parkway
San Jose, CA, 95134
USA
Fairchild Semiconductor's Over-Voltage Protection Device with USB/Charger-Detection Simplifies Design
o Saves 15 Percent Board Space for Portable Applications
SAN JOSE, Calif. - February 3, 2009 - Fairchild Semiconductor offers designers of cell phones, mobile audio, computer and consumer applications a highly integrated over-voltage protection (OVP) with USB/charger-detection. The FAN3989 incorporates an on-board FET and features built-in automatic detection allowing the device to sense the presence of a USB charger, all in a single package. This integrated automatic detection feature simplifies design by eliminating external circuitry, which in turn, saves 15 to 20 percent board space compared to discrete implementations. Its over-voltage protection capability is ideal for addressing emerging safety standards, which is particularly important for cell phones.
The FAN3989 acts as a USB connection monitoring device to determine if a USB device or a battery charging device is connected. The product will send a signal to the system controller to indicate the presence of a USB charging device. The FAN3989 also monitors VBUS for over or under-voltage conditions, setting the FLAG 2 pin low if VBUS is under 3.3V or over 6.0V, while turning off the internal PMOS load switch. These integrated features offer a more accurate approach when compared to typical discrete solutions.
"Recent issues regarding over-charging of portable devices have validated the need for increased protection," said Bill Boldt, senior marketing manager, Signal Conditioning products. "Standards bodies are issuing over-voltage protection recommendations to increase the safety of handheld products. The FAN3989 is instrumental in addressing these concerns and ensuring the safety of phones using chargers that are connected to a USB port."
The FAN3989 is packaged in ultra-compact 8-lead MLP packaging. It utilizes lead-free (Pb-free) terminals and has been characterized for moisture sensitivity in accordance with the Pb-free reflow requirements of the joint IPC/JEDEC standard J-STD-020.
Price: (1,000 pcs): US $0.46
Availability: Samples available now
Delivery: 4- 6 weeks ARO
Contact Information:
To contact Fairchild Semiconductor about this product, please go to: http://www.fairchildsemi.com/cf/sales_contacts/.
For information on other products, design tools and sales contacts, please visit: http://www.fairchildsemi.com.
For a datasheet in PDF format, please go to:
http://www.fairchildsemi.com/ds/FA/FAN3989.pdf
About Fairchild Semiconductor:
Fairchild Semiconductor is a global leader delivering energy-efficient power analog and power discrete solutions. Fairchild is The Power FranchiseŽ, providing leading-edge silicon and packaging technologies, manufacturing strength and system expertise for consumer, communications, industrial, portable, computing and automotive systems. An application-driven, solution-based semiconductor supplier, Fairchild provides online design tools and design centers worldwide as part of its comprehensive Global Power ResourceSM.
Please contact us on the web at www.fairchildsemi.com.
Company Name: Fairchild Semiconductor
Address 1: 3001 Orchard Parkway
City: San Jose
State: CA
Zip: 95134
Phone: 1-(781)-404-2416
URL: http://fairchildsemi.com
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