參數(shù)資料
型號(hào)： LP3972SQX-5810
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)： 2/60頁
文件大小： 1171K
代理商： LP3972SQX-5810
LDO RTC
Unless otherwise noted, V
IN = 3.6V, CIN = 1.0 μF, COUT = 0.47 F, COUT (VRTC) = 1.0 μF ceramic. Typical values and limits appearing
in normal type apply for T
J = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation,
40°C to +125°C. (Note 2, Note 6, Note 7) and (Note 10)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
OUT
Accuracy
Output Voltage Accuracy
V
IN Connected, Load Current =
1 mA
2.632
2.8
2.968
V
ΔV
OUT
Line Regulation
V
IN = (VOUT nom + 1.0V) to 5.5V
(Note 11) Load Current = 1 mA
0.15
%/V
Load Regulation
From Main Battery
Load Current = 1 mA to 30 mA
0.05
%/mA
From Backup Battery
V
IN = 3.0V
Load Current = 1 mA to 10 mA
0.5
I
SC
Short Circuit Current Limit
From Main Battery
V
IN = VOUT +0.3V to 5.5V
100
mA
From Backup Battery
30
V
IN - VOUT
Dropout Voltage
Load Current = 10 mA
375
mV
I
Q_Max
Maximum Quiescent Current
I
OUT = 0 mA
30
μA
TP1
RTC LDO Input Switched from Main
Battery to Backup Battery
V
IN Falling
2.9
V
TP2
RTC LDO Input Switched from
Backup Battery to Main Battery
V
IN Rising
3.0
V
C
O
Output Capacitor
Capacitance for Stability
0.7
1.0
μF
ESR
5
500
m
www.national.com
10
LP3972
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LP3972SQX-5810/NOPB 功能描述:監(jiān)控電路 Pwr Mgmt Unit RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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
LP3972SQXA413 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit for Advanced Application Processors
LP3972SQX-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
LP3972SQX-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
LP3972SQXA514 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Management Unit for Advanced Application Processors
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