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參數(shù)資料
| 型號(hào)： | UB2012AG-S08-R |
| 廠商： | UNISONIC TECHNOLOGIES CO LTD |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | HALOGEN FREE, SOP-8 |
| 文件頁(yè)數(shù)： | 17/17頁(yè) |
| 文件大?。?/td> | 315K |
| 代理商： | UB2012AG-S08-R |
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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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