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参数资料
| 型号： | LP3946ILD |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 文件页数： | 8/15页 |
| 文件大小： | 337K |
| 代理商： | LP3946ILD |
LP3945/LP3946 LLP14 Package Drawing
20066503
(TOP VIEW)
See NS Package Number LDA14A
LP3945/LP3946 Pin Description
Pin #
LP3945
LP3946
Description
1
EN
Charger Enable Input. Internally pulled high to CHG-IN pin.
2
SCL
GND
Serial Interface Clock Input for LP3945. Ground in LP3946.
3
SDA
GND
Serial Interface DATA Input/Output for LP3945. Ground in LP3946.
4
BATT
Battery supply input terminal. Must have 10 F ceramic capacitor to GND.
5V
BG
V
BG
Bandgap Voltage Reference (1.225V). Factory test point. Must be left floating.
6VB
SENSE
VB
SENSE
Battery Voltage Sense connected to the + terminal of the battery.
7
GND
Digital Ground
8
Diff-Amp
Charge current monitoring differential amplifier output. Voltage output representation
of the charge current.
9
BIPB
Battery in Place Bar. Input signal to indicate presence/absence of the battery.
Internally pulled high to CHG-IN. Pulled low by the Battery ID resistor. Absence of
the ID resistor (BIPB signal high) indicates no battery. Pulling BIPB pin high sets the
device to LDO mode.
10
EOC
Active Low Open Drain Output to drive Green LED. Active when wall adaptor is
connected and battery is fully charged. Regardless of the battery chemistry, this
signal is available whenever a battery is attached.
11
GND
Analog Ground
12
CHG
Active Low Open Drain Output to drive Red LED. Active when wall adaptor is
connected and battery is being charged. Regardless of the battery chemistry, this
signal is available whenever a battery is attached.
13
StopModeEN
For normal operation, this pin must be left floating. Pulling this pin to ground will
bypass the 5.6 Hrs safety timer in constant current mode. See "StopModeEN PIN"
Section for more detail.
WARNING! Disabling the timer is not a recommended operating condition
since it disables the safety timer function. User must provide protection
against continuously charging a defective battery.
14
CHG-IN
Charger input from a regulated, current limited power source. Must havea1F
ceramic capacitor to GND.
Ordering Information
LP3945 supplied as 1000 units Tape and Reel
LP3945 supplied as 4500 units Tape and Reel
Package Marking
LP3945ILD
LP3945ILDX
L00011B
LP3946 supplied as 1000 units Tape and Reel
LP3946 supplied as 4500 units Tape and Reel
Package Marking
LP3946ILD
LP3946ILDX
L00030B
The LP3946 has default values of I
CHG=500mA, VBATT=4.1V and EOC=0.1C. For other default options, please contact National
Semiconductor Sales Office.
LP3945/LP3946
www.national.com
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LP3946ILDX | 制造商:NSC 制造商全称: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 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| LP3947 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC |
| LP3947ISD-09 | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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