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參數(shù)資料
| 型號： | LP3923TLX-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)： | 28/32頁 |
| 文件大?。?/td> | 1718K |
| 代理商： | LP3923TLX-VB |
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LP3923 Pin Descriptions
Pin Number
Name
Type
Description
A1
LDO4
A
LDO4 Output
A2
LDO5
A
LDO5 Output
A3
LDO6
A
LDO6 Output
A4
VIN2
P
Input for LDO3 -LDO8
A5
LDO7
A
LDO7 Output
B1
LDO2
A
LDO2 Output
B2
TCXO_EN
DI
Enable control input for LDO4. HIGH = Enable, LOW = Disable (SLEEP
Mode).
B3
RX_EN
DI
Enable control input for LDO5. HIGH = Enable, LOW = Disable.
B4
TX_EN
DI
Enable control input for LDO6. HIGH = Enable, LOW = Disable.
B5
LDO3
A
LDO3 Output
C1
VIN1
P
Input for LDO1 and LDO2
C2
PS_HOLD
DI
Power Supply Hold Input
C3
RESET_N
DO
Reset Output. Pin stays LOW during power up sequence
C4
IMON
A
Charging current monitor output. This pin presents an analog voltage
representation of the charging current.
C5
LDO8
A
LDO8 Output
D1
LDO1
A
LDO1 Output
D2
SEL
DI
LDO1 and LDO2 default voltage selection.
D3
PON_N
DO
State of PWR_ON inverted. Digital output referred to LDO3.
D4
SDA
DI/O
Serial Interface, Data Input/Output
Open Drain output, external pull up resistor is needed, typ. 1.5 k
.
D5
GND
G
IC Ground pin
E1
SW
A
Buck Output
E2
HF_PWR
DI
Power up sequence starts when this pin is set HIGH. Internal 500 k
pull-
down resistor.
E3
PWR_ON
DI
Power up sequence starts when this pin is set HIGH.
Internal 500 k
pull-down resistor.
E4
SCL
DI
Serial Interface Clock input.
External pull up resistor is needed, typ. 1.5 k
.
E5
BATT
P
Main battery connection. Used both as a power connection for current
delivery to the battery and as a voltage sense connection to monitor the
battery charge level.
F1
VINB
P
Input for Buck
F2
GNDB
G
Power Ground for Buck
F3
FB
A
Buck Feedback pin
F4
ACOK_N
DO
AC Adapter indicator, LOW when V
CHG_IN is above its trip point
F5
CHG_IN
P
DC power input to charger block from AC adapter or USB
A:
Analog Pin
D:
Digital Pin
I:
Input Pin
DI/O
Digital Input/Output Pin
G:
Ground
O:
Output Pin
P:
Power Connection
5
www.national.com
LP3923
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LP3923TLX-VB/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| LP3923TLX-VC | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Cellular Phone Power Management Unit |
| LP3923TLX-VC/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| LP3923TLX-VI | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Cellular Phone Power Management Unit |
| LP3923TLX-VI/NOPB | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
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