1-CELL LITHIUM-ION/POLYMER BATTERY PROTECTION IC
DESCRIPTION
The UTC UB227 is a series of lithium-ion/lithium-polymer rechargeable battery protection ICs incorporating high accuracy voltage detection circuits and delay circuits. The UTC UB227 is suitable for protection of single cell lithium-ion / lithium polymer battery packs from overcharge, over discharge and over current. The ultra-small package and less required external components make it ideal to integrate the UTC UB227 into the limited space of battery pack.
FEATURES
* Wide Supply Voltage Range: VDD=1.5V~8.0V
* Ultra-Low Quiescent Current: IOPE=3.0μA (VDD=3.9V)
* Ultra-Low Power-Down Current: IPDN=0.1μA (VDD=2.0V)
* Overcharge Detection Voltage: VCU=3.9V~4.4V
* Overcharge Release Voltage: VCL=3.8V~4.4V
* Over Discharge Release Voltage: VDL=2.0V~3.0V
* Over Discharge Release Voltage: VDU=2.0V~3.4V
* Discharge Over Current Detection Voltage: VDIOV=0.05V~0.30V
* Charge Over Current Voltage: VCIOV=-0.115V (Fixed)
* Charger Detection Voltage: VCHA=-0.7V (Fixed)
* Delay Times are Generated by an Internal Circuit. (External Capacitors are Unnecessary.)
