參數(shù)資料
型號： LP3972
廠商： National Semiconductor Corporation
英文描述： Power Management Unit for Advanced Application Processors
中文描述： 電源管理單元的高級應(yīng)用處理器
文件頁數(shù)： 45/59頁
文件大?。?/td> 1072K
代理商： LP3972
I
2
C Compatible Interface
(Continued)
BACKUP BATTERY CHARGER CONTROL REGISTER (BCCR)
This register specifies the status of the main battery supply. NBUB bit
Backup Battery Charger Control Register (BCCR) 8h’89
Bit
7**
6
5**
4**
3**
2
1
0
Designation
Reset Value
Note:
** denotes one time factory programmable EPROM registers for default values
NBUB
0
CNBFL
0
nBFLT
1
BUCEN
0
IBUC
0
0
0
1
Backup Battery Charger Control Register (BCCR) 8h’89 Definitions
Bit
7
Access
R/W
Name
NBUB
Description
No back-up battery default setting. Logic will not allow switch over to
back-up battery.
0 = Back up Battery Enabled, Default
1 = Back up Battery Disabled
Control for nBATT_FLT output signal
0 = nBATT_FLT Enabled
1 = nBATT_FLT Disabled
nBATT_FLT monitors the battery voltage and can be set to the Assert
voltages listed below.
Data Code
3h’01
3h’02
3h’03
3h’04
3h’05
3.4
Enables backup battery charger
0 = Back up Battery Charger Disabled
1 = Back up Battery Charger Enabled
Charger current setting for back-up battery
Data Code
2h’00
2h’01
2h’02
2h’03
6
R/W
CNBFL
5:3
R/W
BFLT
Asserted
2.6
2.8
3.0
3.2
De-Asserted
2.8
3.0
3.2
3.4
3.6
Note:
Default
2
R/W
BUCEN
1:0
R/W
IBUC
BU Charger I (μA)
260
190
325
390
Note:
Default
L
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LP3972_08 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit for Advanced Application Processors
LP3972SQ-0514/NOPB 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
LP3972SQ-5810/NOPB 功能描述:監(jiān)控電路 Pwr Mgmt Unit RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
LP3972SQ-A413 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
LP3972SQ-A413/NOPB 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
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