Rechargeable Thin Film Battery 50µAh, 3.8V

Features

•  All Solid State

•  SMT Package and Process

•  Lead-Free Reflow Tolerant

•  Thousands of Recharge Cycles          

•  Low Self-Discharge     

•  Eco-Friendly, RoHS Compliant         

Electrical Properties

Output voltage:                         3.8V

Capacity (typical):       50µAh

Charging source:                       4.00V to 4.15V

Recharge time to 80%                50 minutes

Charge/Discharge cycles:           >5000 to 10% Discharge

Physical Properties

Package size:                           8 mm x 8 mm

Operating temperature:              -20°C to 70°C

Storage temperature:           -40°C to 125°C

Applications

•  Standby supply for non-volatile SRAM, real-time  clocks, controllers, supply supervisors, and other system-critical components.

•  Wireless sensors and RFID tags and other powered, low duty cycle applications.

•  Localized power source to keep microcontrollers and other devices alert in standby mode.

•  Power bridging to provide backup power to system during exchange of main batteries.

•  Energy Harvesting by coupling the EnerChip with energy transducers such as solar panels.

 

Pin Number(s)	Descript-xion
1	V+
4	V-
2,3	NIC
5-16	NIC
Note: NIC = No Internal Connection

The EnerChip™ CBC050 is a surface-mount, solid state, rechargeable battery rated for 50μAh at 3.8V. It is ideal as a localized, on-board power source for SRAMs, real-time clocks and microcontrollers which require standby power to retain time or data. It is also suitable for RFID tags, smart sensors, and remote applications which require a miniature, low-cost, and rugged power source. For many applications, the CBC050 is a superior alternative to coin cell batteries and supercapacitors.

Because of their solid state design, EnerChip™ batteries are able to withstand solder reflow temperatures and can be processed in high-volume manufacturing lines similar to conventional semiconductor devices. There are no harmful gases, liquids or special handling procedures, in contrast to traditional rechargeable batteries.

The EnerChip recharge is fast and simple, with a direct connection to a 4.1V voltage source and no current limiting components. Recharge time is 50 minutes to 80% capacity. Robust design offers thousands of charge/discharge cycles. The CBC050 is packaged in an 8 mm x 8 mm quad flat package. It is available in reels for use with automatic insertion equipment.

                      Top View - CBC050 Schematic

Operating Characteristics

Parameter		Condition	Min	Typical	Max	Units
Discharge Cutoff Voltage		25°C	3.0(1)	-	-	V
Charge Voltage		25°C	4.0(2)	4.1	4.3	V
Pulse Discharge Current		25°C	300(3)	-	-	μA
Cell Resistance		25°C	-	1500	3000	Ω
Self-Discharge (average)		non-recoverable	-	2.5	-	% per year
		recoverable		8(4)		% per year
Operating Temperature		-	-20	25	70	°C
Recharge Cycles (to 80% of rated capacity; 4.1V charge voltage)	25°C	10% depth-of-discharge	5000	-	-	cycles
		50% depth-of discharge	1000	-	-	cycles
	40°C	10% depth-of-discharge	2500	-	-	cycles
		50% depth-of-discharge	500	-	-	cycles
Recharge Time (to 80% of rated capacity)		4.1V constant voltage	-	50	-	minutes
Capacity		8 μA discharge; 25°C	-	50	-	μAh

(1) Failure to cutoff the discharge voltage at 3.0V will result in battery performance degradation.
(2) Charging at 4.0V will charge the cell to approximately 70% of its rated capacity.
(3) Typical pulse duration = 20 milliseconds.
(4) First month recoverable discharge is 5% average.

Note: All specifications contained within this document are subject to change without notice