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LP3918TL/NOPB 数据表(PDF) 2 Page - Texas Instruments

部件名 LP3918TL/NOPB
功能描述  LP3918 Battery Charge Management and Regulator Unit
PDF  38 Pages
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制造商  TI2 [Texas Instruments]
网页  https://www.ti.com
标志 TI2 - Texas Instruments

LP3918TL/NOPB 数据表(HTML) 2 Page - Texas Instruments

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background image
C
A
5
4
3
2
1
TOP VIEW
BATT
VIN2
LDO5
LDO4
GNDA
LDO3
LDO2
LDO1
VIN1
TCXO
_EN
RX_EN
SDA
SCL
VSS
TX_EN
PON
_N
RESET
_N
ACOK
_N
LDO7
LDO6
HF
PWR
PS_
HOLD
PWR
_ON
IMON
CHGIN
B
D
E
LP3918
SNVS476D – AUGUST 2007 – REVISED MAY 2013
www.ti.com
Device Pin Diagram
Figure 2. LP3918 25 pin DSBGA Package
TOP VIEW
PIN DESCRIPTION
Pin #
Name
Type(1)
Description
A1
IMON
A
Charge current monitor output. This pin presents an analog
voltage representation of the input charging current. VIMON(mV) =
(2.47 x ICHG)(mA).
A2
PS_HOLD
DI
Input for power control from external processor/controller.
A3
VSS
G
Digital Ground pin
A4
RESET_N
DO
Reset Output. Pin stays LOW during power up sequence. 60ms
after LDO1 (CORE) is stable this pin is asserted HIGH.
A5
ACOK_N
DO
AC Adapter indicator, LOW when 4.5V – 6.0V present at CHG_IN.
B1
CHG_IN
P
DC power input to charger block from wall or car power adapters.
B2
PWR_ON
DI
Power up sequence starts when this pin is set HIGH. Internal
500k
Ω pull-down resistor.
B3
SCL
DI
Serial Interface Clock input. External pull up resistor is needed, typ
1.5k
Ω
B4
PON_N
DO
Active low signal is PWR_ON inverted
B5
LDO7
A
LDO7 Output (GP)
C1
BATT
P
Main battery connection. Used as a power connection for current
delivery to the battery.
C2
HF_PWR
DI
Power up sequence starts when this pin is set HIGH. Internal
500k
Ω pull-down resistor.
C3
SDA
DI/O
Serial Interface, Data Input/Output Open Drain output, external pull
up resistor is needed, typ 1.5k
Ω.
C4
TX_EN
DI
Enable control for LDO6 (TX). HIGH = Enable, LOW = Disable.
C5
LDO6
A
LDO6 Output (TX)
D1
VIN1
P
Battery Input for LDO1 - 2
D2
TCXO_EN
DI
Enable control for LDO4 (TCXO). HIGH = Enable, LOW = Disable.
D3
GNDA
G
Analog Ground pin
D4
RX_EN
DI
Enable control for LDO5 (RX). HIGH = Enable, LOW = Disable.
D5
LDO5
A
LDO5 Output (RX)
(1)
A: Analog. D: Digital. I: Input. DI/O: Digital Input/Output. G: Ground. O: Output. P: Power.
2
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Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LP3918



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