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ACT8600 bảng dữ liệu(PDF) 49 Page - Active-Semi, Inc

tên linh kiện ACT8600
Giải thích chi tiết về linh kiện  Advanced PMU for Ingenic JZ4760/60B/70 Processors
PDF  50 Pages
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nhà sản xuất  ACTIVE-SEMI [Active-Semi, Inc]
Trang chủ  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT8600 bảng dữ liệu(HTML) 49 Page - Active-Semi, Inc

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ACT8600
Rev 3, 15-Nov-12
Copyright © 2012 Active-Semi, Inc.
Innovative Power
TM
ActivePMU
TM and ActivePathTM are trademarks of Active-Semi.
I
2CTM is a trademark of NXP.
- 49 -
www.active-semi.com
temperature of the battery pack by injecting a 100μA
(typ) current into the thermistor (via the TH pin) and
sensing the voltage at TH. The voltage at TH is
continuously monitored, and charging is suspended
if the voltage at TH exceeds either of the internal
VTHH and VTHL thresholds of 0.5V and 2.5V,
respectively.
The net resistance (from TH to GA) required to cross
the thresholds are given by:
100μA × RNOM × kHOT = 0.5V → RNOM × kHOT ≈
5kΩ
100μA × RNOM × kCOLD = 2.5V → RNOM ×
kCOLD ≈ 25kΩ
where RNOM is the nominal thermistor resistance at
room temperature, and kHOT and kCOLD represent
the ratios of the thermistor's resistance at the
desired hot and cold thresholds, respectively, to the
resistance at 25°C.
The status of the battery temperature pin may be
read at any time by reading the TEMPDAT[-] bit,
where a value of 1 indicates that battery temperature
is within the valid range, and a value of 0 indicates
that battery temperature has exceeded either of the
thresholds.
Figure 7:
Simple Configuration



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