参数资料
型号: UB2012AG-S08-R
厂商: UNISONIC TECHNOLOGIES CO LTD
元件分类: 电源管理
英文描述: POWER SUPPLY SUPPORT CKT, PDSO8
封装: HALOGEN FREE, SOP-8
文件页数: 17/17页
文件大小: 315K
代理商: UB2012AG-S08-R
UB2012
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
9 of 17
www.unisonic.com.tw
QW-R121-018 .b
APPLICATION INFORMATION(Cont.)
CURRENT REGULATION PHASE
When the battery-pack voltage is less than the regulation voltage, VO(REG), the current is regulated by the UTC
UB2012
. This advanced linear charge management IC monitors charge current at the SNS input by the voltage drop
across a sense-resistor, RSNS, in series with the battery pack. In current sensing configuration (Figure 5), RSNS is
between the VCC and SNS pins. Charge-current feedback, applied through pin SNS, maintains a voltage of VSNS
across the current sense resistor. The following formula calculates the value of the sense resistor:
O(REG)
(SNS)
SNS
I
V
R
=
(1)
Where IO(REG) is the desired charging current.
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