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參數資料
| 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： | 5/15頁 |
| 文件大?。?/td> | 337K |
| 代理商： | LP3945ILDX |
Electrical Characteristics
(Continued)
Unless otherwise noted, V
= 5V, V
= 4V, C
= 1μF, C
= 10μF. Typical values and limits appearing in nor-
mal 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
BATTERY CHARGER—Li ION MODE (MODE = LOW)
Restart Threshold Voltage
(For 4.1V Cell)
Restart Threshold Voltage
(For 4.2V Cell)
Internal Current Sense
Resistance
Internal Current Sense Resistor
Load Current
V
BAT-RST
V
BATT
Falling, Transition from
EOC, to Pre-Qualification State
V
BATT
Falling, Transition from
EOC, to Pre-Qualification State
3.9
3.77
4.02
V
4.00
3.86
4.12
R
SENSE
(Note 7)
120
m
(Note 7)
1.2
A
ICHG
MON
Diff-Amp Output
I
CHG
= 50 mA
I
CHG
= 500 mA
I
CHG
= 950 mA
0C to +85C (Note 7)
40C to +85C (Note 7)
0.583
1.333
2.090
5.625
5.625
V
t
EOC
Time to EOC State
4.78
4.5
6.42
6.75
Hrs
BATTERY CHARGER—NI-MH MODE (MODE = HIGH, LP3945 ONLY)
V
BATT-MAX
Battery Over Voltage Protection
(Charging Current Decreases to
0 mA when V
BATT
is above this
Voltage), V
CHG-IN
= 5.6V
5.4
5.292
5.508
V
LDO MODE (BIPB=HIGH)
V
OUT
Output Voltage Regulation
I
LOAD
=50mA
I
LOAD
=950mA
4.10
4.06
V
LOGIC LEVELS
V
IL
V
IH
Low Level Input Voltage
High Level Input Voltage
EN
EN
EN = LOW
EN = HIGH
0.4
V
V
2.0
10
5
I
IL
Enable Pin Input Current
+10
+5
μA
Electrical Characteristics, I
2
C Interface (LP3945 Only)
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
0.4
Max
0.3 V
DD
V
DD
+0.5
0.2 V
DD
V
IL
V
IH
V
OL
V
HYS
F
CLK
t
HOLD
Low Level Input Voltage
High Level Input Voltage
Low Level Output Voltage
Schmitt Trigger Input Hysteresis
Clock Frequency
Hold Time Repeated START
Condition
CLK Low Period
CLK High Period
Set-up Time Repeated START
Condition
Data Hold Time
Data Set-up Time
Set-up Time for STOP Condition
SDA & SCL
SDA & SCL
SDA & SCL
SDA & SCL
V
V
V
V
0.7 V
DD
0
0.1 V
DD
400
kHz
(Note 7)
0.6
μs
t
CLK-LP
t
CLK-HP
t
SU
(Note 7)
(Note 7)
(Note 7)
1.3
0.6
μs
μs
0.6
μs
t
DATA-HOLD
t
DATA-SU
t
SU
(Note 7)
(Note 7)
(Note 7)
300
100
0.6
ns
ns
μs
L
www.national.com
5
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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:- 標準包裝:1 系列:- 功能:充電管理 電池化學: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 供應商設備封裝:SOT-23-5 包裝:剪切帶 (CT) 產品目錄頁面: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:- 標準包裝:1 系列:- 功能:充電管理 電池化學: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 供應商設備封裝:SOT-23-5 包裝:剪切帶 (CT) 產品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
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