参数资料
型号: LTC4150IMS#PBF
厂商: Linear Technology
文件页数: 1/14页
文件大小: 0K
描述: IC COUNTER/GAUGE GAS/BATT 10MSOP
标准包装: 50
功能: 燃料,电量检测计/监控器
电池化学: 锂离子,镍镉,镍氢
电源电压: 2.7 V ~ 8.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件

LTC4150
Coulomb Counter/
Battery Gas Gauge
FEATURES
DESCRIPTION
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Indicates Charge Quantity and Polarity
±50mV Sense Voltage Range
Precision Timer Capacitor or Crystal Not Required
2.7V to 8.5V Operation
High Side Sense
32.55Hz/V Charge Count Frequency
1.5μA Shutdown Current
10-Pin MSOP Package
The LTC ? 4150 measures battery depletion and charging
in handheld PC and portable product applications. The
device monitors current through an external sense resistor
between the battery’s positive terminal and the battery’s
load or charger. A voltage-to-frequency converter trans-
forms the current sense voltage into a series of output
pulses at the interrupt pin. These pulses correspond to a
?xed quantity of charge ?owing into or out of the battery.
The part also indicates charge polarity as the battery is
APPLICATIONS
depleted or charged.
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Battery Chargers
Palmtop Computers and PDAs
Cellular Telephones and Wireless Modems
The LTC4150 is intended for 1-cell or 2-cell Li-Ion and
3-cell to 6-cell NiCd or NiMH applications.
L , LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode are registered trademarks and
ThinSOT and PowerPath are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners.
TYPICAL APPLICATION
Integral Nonlinearity, % of Full Scale
0.5
+
R SENSE
CHARGER
LOAD
4.7μF
0.4
0.3
0.2
SENSE – SENSE +
C F+
V DD
INT
R L
R L
0.1
0
–0.1
4.7μF
C F–
LTC4150
CLR
POL
CHG
DISCHG
μP
–0.2
–0.3
GND
SHDN
–0.4
4150 TA01a
–0.5
–50
–25
0
25
50
CURRENT SENSE VOLTAGE (mV)
4150 TA01b
4150fc
1
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