參數(shù)資料
型號(hào): LP3972SQXE514
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40
封裝: 5 X 5 MM, LLP-40
文件頁數(shù): 40/60頁
文件大?。?/td> 1171K
代理商: LP3972SQXE514
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
NBUB
CNBFL
nBFLT
BUCEN
IBUC
Reset Value
0
1
0
1
Note:
** denotes one time factory programmable EPROM registers for default values
Backup Battery Charger Control Register (BCCR) 8h’89 Definitions
Bit
Access
Name
Description
7
R/W
NBUB
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
6
R/W
CNBFL
Control for nBATT_FLT output signal
0 = nBATT_FLT Enabled
1 = nBATT_FLT Disabled
5:3
R/W
BFLT
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
Asserted
2.6
2.8
3.0
3.2
3.4
De-Asserted
2.8
3.0
3.2
3.4
3.6
Note:
Default
2
R/W
BUCEN
Enables backup battery charger
0 = Back up Battery Charger Disabled
1 = Back up Battery Charger Enabled
1:0
R/W
IBUC
Charger current setting for back-up battery
Data Code
2h’00
2h’01
2h’02
2h’03
BU Charger I (A)
260
190
325
390
Note:
Default
45
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LP3972
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LP3972SQX-E514 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
LP3972SQX-E514/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
LP3972SQX-I414/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
LP3972SQX-I514 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
LP3972SQX-I514/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