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參數(shù)資料
| 型號(hào)： | LP3947 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC |
| 中文描述： | 的USB / AC適配器，單節(jié)鋰離子電池充電器IC |
| 文件頁(yè)數(shù)： | 6/14頁(yè) |
| 文件大?。?/td> | 649K |
| 代理商： | LP3947 |
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Electrical Characteristics, I
2
C Interface
(Continued)
Unless otherwise noted, V
= 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 +125C.
(Notes 7, 8, 9)
Symbol
Parameter
Conditions
Typ
Limit
Units
Min
Max
t
SU
Set-Up Time Repeated START
Condition
t
DATA-HOLD
Data Hold Time
t
DATA-SU
Data Set-Up Time
t
SU
Set-Up Time for STOP Condition
t
TRANS
Maximum Pulse Width of Spikes that
must be Suppressed by the Input
Filter of both DATA & CLK Signals.
(Note 8)
0.6
μs
(Note 8)
(Note 8)
(Note 8)
(Note 8)
300
100
0.6
ns
ns
μs
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:
Caution must be taken to avoid raising pins EN and V
T
0.3V higher than V
CHG-IN
and raising pins ISEL, MODE, SCL and SDA 0.3V higher than V
BATT
.
Note 4:
The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using the formula
P = (T
J
– T
A
)
θ
JA
,
where T
is the junction temperature, T
is the ambient temperature, and
θ
is the junction-to-ambient thermal resistance. The 1.89W rating appearing under
Absolute Maximum Ratings results from substituting the Absolute Maximum junction temperature, 150C, for T
, 80C for T
, and 37C/W for
θ
. More power can
be dissipated safely at ambient temperatures below 80C. Less power can be dissipated safely at ambient temperatures above 80C. The Absolute Maximum power
dissipation can be increased by 27 mW for each degree below 80C, and it must be de-rated by 27 mW for each degree above 80C.
Note 5:
The human-body model is used. The human-body model is 100 pF discharged through 1.5 k
.
Note 6:
Like the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 1.21W rating
appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125C, for T
J
, 80C for T
A
, and 37C/W for
θ
JA
into
(1) above. More power can be dissipated at ambient temperatures below 80C. Less power can be dissipated at ambient temperatures above 80C. The maximum
power dissipation for operation can be increased by 27 mW for each degree below 80C, and it must be de-rated by 27 mW for each degree above 80C.
Note 7:
All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with T
J
= 25C. All hot and cold limits are
guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control.
Note 8:
Guaranteed by design.
Note 9:
LP3947 is not intended as a Li-Ion battery protection device, any battery used in this application should have an adequate internal protection.
Note 10:
The
±
10 mA limits apply to all charge currents from 100 mA to 450 mA, to 0.1C End Of Charge (EOC). The limits increase proportionally with higher EOC
points. For example, at 0.2C, the End Of Charge current accuracy becomes
±
20 mA.
(1)
20111004
FIGURE 1. Li-Ion Charging Profile
L
www.national.com
6
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| LP3947ISD-09 | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP3947ISD-09/NOPB | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP3947ISD-51 | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP3947ISD-51/NOPB | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP3947ISD-51EV | 功能描述:電源管理IC開發(fā)工具 LP3947 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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