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參數(shù)資料
| 型號： | LP3945ILDX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Battery Charge Management System |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 文件頁數(shù)： | 6/15頁 |
| 文件大?。?/td> | 337K |
| 代理商： | LP3945ILDX |
Electrical Characteristics, I
2
C Interface (LP3945 Only)
(Continued)
Unless otherwise noted, V
= 5V, V
= 4V. Typical values and limits appearing in normal type apply for T
= 25C.
Limits appearing in
boldface
type apply over the entire junction temperature range for operation, T
J
= 40C to +85C. (Notes
6, 7, 8)
Symbol
Parameter
Conditions
Typical
Limit
Units
Min
Max
t
TRANS
Maximum Pulse Width of Spikes
that must be Suppressed by the
Input Filter of both DATA & CLK
signals.
(Note 7)
50
ns
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device
is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical
Characteristics tables.
Note 2:
All voltages are with respect to the potential at the GND pin.
Note 3:
The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using the formula
P = (T
J
—T
A
)/
θ
JA
,
(1)
where T
J
is the junction temperature, T
A
is the ambient temperature, and
θ
JA
is the junction-to-ambient thermal resistance. The 1.76W rating appearing under
Absolute Maximum Ratings results from substituting the Absolute Maximum junction temperature, 150C, for T
J
, 85C for T
A
, and 37C/W for
θ
JA
. More power can
be dissipated safely at ambient temperature below 85C. Less power can be dissipated safely at ambient temperatures above 85C. The Absolute Maximum power
dissipation can be increased by 27 mW for each degree below 85C, and it must be de-rated by 27 mW for each degree above 85C.
Note 4:
The human-body model is 100 pF discharged through 1.5 k
. The machine model is 0
in series with 220pF
Note 5:
Like the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 1.08W rating
appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125C, for T
J
, 85C for T
A
, and 37C/W for
θ
JA
into
(1) above. More power can be dissipated at ambient temperatures below 85C. Less power can be dissipated at ambient temperatures above 85C. The maximum
power dissipation for operation can be increased by 27 mW for each degree below 85C, and it must be de-rated by 27 mW for each degree above 85C.
Note 6:
All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with T
= 25C. All hot and cold limits are
guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control.
Note 7:
Guaranteed by design.
Note 8:
LP3945 and LP3946 are not intended as a Li-Ion battery protection device, battery used in this application should have an adequate internal protection.
20066504
The end of charge current threshold default setting is at 0.1C, this threshold can be set to 0.15 or 0.2 by the controller (see bit chart for detail).
Li-Ion Charging Profile
L
www.national.com
6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3945LD | 功能描述:IC MANAGEMENT BATT CHARGE 14-LLP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| LP3946 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management System |
| LP3946ILDX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management System |
| LP3946LD | 制造商:Rochester Electronics LLC 功能描述:STANDALONE CC/CV LIION BATTERY - Bulk |
| LP3946LD/NOPB | 功能描述:IC MANAGEMENT BATT CHARGE 14-LLP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
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