DS3800 DALLAS | Alldatasheet
Document overview
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Technical content
FEATURES
/elevenoclock Houses 400 mAh primary lithium battery /elevenoclock Snaps directly onto a surface–mounted 40mm ball–grid array (BGA) Nonvolatile SRAM module /elevenoclock Attaches after host BGA module has been surface–mounted to protect lithium battery from the high temperatures of reflow soldering /elevenoclock Maintains mechanical and electrical connection with BGA module even during severe shock and vibration stresses /elevenoclock Four attachment flanges latch onto host BGA module to provide strong, semi–permanent attachment. Flanges can be broken off for cap removal /elevenoclock Industrial temperature range of –40°C to +85°C attery Cap PIN ASSIGNMENT ABSOLUTE MAXIMUM RATINGS Operating Temperature -40°C to 85°C Non-Operating Temperature -40°C to 85°C BATTERY CHARACTERISTICS Nominal Voltage 3 volts Nominal Capacity 400 mAh Chemistry Li(CF)x Data Retention Life 8 Years (25°C)
DESCRIPTION
The DS3800 Battery Cap is a snap–on lithium power source for Dallas Semiconductors 40mm ball–grid array (BGA) Nonvolatile SRAM modules. After a host BGA module has been soldered in place and cleaned, the DS3800 Battery Cap is snapped onto the module to serve as the secondary power supply. The Battery Cap is keyed to prevent incorrect attachment and is designed to maintain mechanical and electrical contact with its host module even during severe shock and vibration. Electrically, the DS3800 battery is connected to the host BGA module with gold–plated round pins in the Battery Cap inserted into gold–plated receptacles on the BGA. Mechanically, four flanges on the DS3800 tightly grip the BGA module board to prevent Cap removal, while corner features in the Cap prevent lateral movement of the Cap while it is attached to its host BGA module. DS3800 Advanced NV SRAM Battery Cap PRELIMINARY www.dalsemi.com bÄããÄí qÑåàÇéçÉîÇìéë bqQVNN \ÄììÑë ò>aÄè WWvv\ vvvvvv
A IN. - 1.670 MM - 42.42 B IN. - 1.705 MM - 42.42 C IN. - 0.505 MM - 12.76