參數(shù)資料
型號： LP3923TL-VB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30
封裝： 3 X 2.50 MM, MICRO SMD-30
文件頁數(shù)： 4/32頁
文件大?。?/td> 1718K
代理商： LP3923TL-VB
Charger Electrical Characteristics
Unless otherwise noted, V
CHG_IN = 5V, VIN= BATT = 3.6V, CCHG_IN = 1 μF, VBATT = 30 F. 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,
T
A = TJ = 25°C to +85°C. (Note 6, Note 9)
Symbol
Parameter
Conditions
Typical
Limit
Units
Min
Max
V
CHG_IN
AC wall adapter input
voltage operating range
4.5
6.8
V
OK_CHG
CHG_IN OK trip-point.
V
CHG_IN - VBATT (Rising)
150
mV
V
CHG_IN - VBATT (Falling)
40
V
TERM
Battery charging
termination voltage
tolerance
V
TERM = 4.2V, ICHG = 50 mA
V
TERM is measured at 10% of the programmed
I
CHG current
-0.35
+0.35
%
-1
+1
I
CHG
CHG_IN programmable
full-rate charging current
6.8V
≥ V
CHG_IN ≥ 4.5V
V
BATT < VCHG_IN VOK_CHG
V
FULL_RATE < VBATT < VTERM (Note 10)
50
1200
mA
Full rate charging current
tolerance
I
CHG = 400 mA
10
+10
%
I
PREEQUAL
Pre-charging current
2.2V < V
BATT < VFULL_RATE
50
30
70
mA
V
FULL_RATE
Full-rate qualification
threshold
V
BATT rising, transition from pre-charging to full-
rate charging
2.8
2.7
2.9
V
BATT rising, transition from pre-charging to full-
rate charging (LP3923-VC)
3.0
2.9
3.1
I
EOC
End-of-charging current,
% of full-rate current
0.1C option selected
10
%
V
RESTART
Restart threshold voltage
From V
TERM voltage (4.2V, 100 mV options
selected)
100
70
130
mV
I
MON
I
MON Voltage 1
I
CHG = 100 mA
0.247
V
I
MON Voltage 2
I
CHG = 400 mA
0.988
0.840
1.127
C
BATT
Capacitance on BATT
30
1000
F
T
REG
Regulated junction
temperature
115
°C
Detection and Timing (one combined timer)
T
POK
Power OK deglitch time
V
CHG > VBATT + VOK_CHG
30
ms
T
PC_FULL
Deglitch time
From pre-charging to full-rate charging
210
ms
T
CHG
Charge timer
Pre-charge mode
1
Hrs
CC mode/CV mode (combined timer)
disabled
2
5
8
T
EOC
Deglitch time for end- of-
charge transition
210
ms
www.national.com
12
LP3923
相關(guān)PDF資料
PDF描述
LP3923TLX-VC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30
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LP3972SQXA413 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LP3923TL-VB/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
LP3923TL-VC 制造商:TI 制造商全稱:Texas Instruments 功能描述:Cellular Phone Power Management Unit
LP3923TL-VC/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
LP3923TL-VI 制造商:TI 制造商全稱:Texas Instruments 功能描述:Cellular Phone Power Management Unit
LP3923TL-VI/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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