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參數(shù)資料
| 型號(hào)： | LP3946ILD |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 文件頁數(shù)： | 11/15頁 |
| 文件大?。?/td> | 337K |
| 代理商： | LP3946ILD |
Electrical Characteristics (Continued)
Unless otherwise noted, V
CHG-IN = 5V, VBATT = 4V, CCHG-IN = 1F, CBATT = 10F. Typical values and limits appearing in nor-
mal type apply for T
J = 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)
V
BAT-RST
Restart Threshold Voltage
(For 4.1V Cell)
V
BATT Falling, Transition from
EOC, to Pre-Qualification State
3.9
3.77
4.02
V
Restart Threshold Voltage
(For 4.2V Cell)
V
BATT Falling, Transition from
EOC, to Pre-Qualification State
4.00
3.86
4.12
R
SENSE
Internal Current Sense
Resistance
120
m
Internal Current Sense Resistor
Load Current
1.2
A
ICHG
MON
Diff-Amp Output
I
CHG = 50 mA
0.583
V
I
CHG = 500 mA
1.333
I
CHG = 950 mA
2.090
t
EOC
Time to EOC State
0C to +85C (Note 7)
5.625
4.78
6.42
Hrs
40C to +85C (Note 7)
5.625
4.5
6.75
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
4.10
V
I
LOAD=950mA
4.06
LOGIC LEVELS
V
IL
Low Level Input Voltage
EN
0.4
V
IH
High Level Input Voltage
EN
2.0
V
I
IL
Enable Pin Input Current
EN = LOW
10
+10
A
EN = HIGH
5
+5
Electrical Characteristics, I
2C Interface (LP3945 Only)
Unless otherwise noted, V
CHG-IN = 5V, VBATT = 4V. Typical values and limits appearing in normal type apply for TJ = 25C.
Limits appearing in boldface type apply over the entire junction temperature range for operation, T
J = 40C to +85C. (Notes
Symbol
Parameter
Conditions
Typical
Limit
Units
Min
Max
V
IL
Low Level Input Voltage
SDA & SCL
0.4
0.3 V
DD
V
IH
High Level Input Voltage
SDA & SCL
0.7 V
DD
V
DD +0.5
V
OL
Low Level Output Voltage
SDA & SCL
0
0.2 V
DD
V
HYS
Schmitt Trigger Input Hysteresis
SDA & SCL
0.1 V
DD
V
F
CLK
Clock Frequency
400
kHz
t
HOLD
Hold Time Repeated START
Condition
0.6
s
t
CLK-LP
CLK Low Period
1.3
s
t
CLK-HP
CLK High Period
0.6
s
t
SU
Set-up Time Repeated START
Condition
0.6
s
t
DATA-HOLD
Data Hold Time
300
ns
t
DATA-SU
Data Set-up Time
100
ns
t
SU
Set-up Time for STOP Condition
0.6
s
LP3945/LP3946
www.national.com
5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| LP3947 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC |
| 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 |
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