參數(shù)資料
型號(hào)： LTC4097EDDB
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12
封裝： 3 X 2 MM, 0.75 MM HEIGHT, PLASTIC, DFN-12
文件頁(yè)數(shù)： 3/20頁(yè)
文件大?。?/td> 219K
代理商： LTC4097EDDB
LTC4097
11
4097f
OPERATION
The LTC4097 is designed to efciently manage charging
a single-cell lithium-ion battery from two separate power
sources: a wall adapter and USB power bus. Using the
constant-current/constant-voltage algorithm, the charger
can deliver up to 1.2A of charge current from the wall
adapter supply or up to 1A of charge current from the
USB supply with a nal oat voltage accuracy of ±0.6%.
The LTC4097 has two internal P-channel power MOSFETs,
thermal regulation and shut down circuitry. No blocking
diodes or external sense resistors are required.
Power Source Selection
The LTC4097 can charge a battery from either the wall
adapter input or the USB port input. The LTC4097 automati-
cally senses the presence of voltage at each input. If both
power sources are present, the LTC4097 defaults to the
wall adapter source provided sufcient power is present
at the DCIN input. “Sufcient power” is dened as:
Supply voltage is greater than the UVLO threshold.
Supply voltage is greater than the battery voltage by
30mV (100mV or 150mV rising, 30mV falling).
The VNTC output pin indicates that sufcient input voltage
is available. Table 1 describes the behavior of the power
source selection.
Table 1. Power Source Selection
VUSBIN > 4V and
VUSBIN > BAT + 30mV
VUSBIN < 4V or
VUSBIN < BAT + 30mV
VDCIN > 4.2V and
VDCIN > BAT + 30mV
Charger powered from
wall adapter source;
USBIN current < 25A
Charger powered from
wall adapter source
VDCIN < 4.2V or
VDCIN < BAT + 30mV
Charger powered from
USB source
No charging
Programming and Monitoring Charge Current
The charge current delivered to the battery from the wall
adapter supply is programmed using a single resistor from
the IDC pin to ground.
R
V
I
V
R
IDC
CHRG DC
IDC
==
1000
()
,
Similarly, the charge current from the USB supply is
programmed using a single resistor from the IUSB pin
to ground. Setting HPWR pin to its high state will select
100% of the programmed charge current, while setting
HPWR to its low state will select 20% of the programmed
charge current.
R
V
I
HPWR
HIGH
I
IUSB
CHRG USB
==
1000
()
===
=
1000
200
V
R
HPWR
HIGH
I
V
R
IUSB
CHRG USB
IUS
()
B
HPWR
LOW
()
=
Charge current out of the BAT pin can be determined at
any time by monitoring the IDC or IUSB pin voltage and
applying the following equations:
I
V
R
ch
ing from wall adapter
BAT
IDC
=
, (
arg
1000
))
,
(arg
sup
I
V
R
ch
ing from USB
p
BAT
IUSB
=
1000
lly HPWR
HIGH
I
V
R
ch
in
BAT
IUSB
,)
,
(arg
=
200
g
g from USB
ply HPWR
LOW
sup
,
)
=
相關(guān)PDF資料
PDF描述
LTC4098EUDC-1#TRPBF BATTERY CHARGE CONTROLLER, 2650 kHz SWITCHING FREQ-MAX, PQCC20
LTC4098EPDC-1#PBF BATTERY CHARGE CONTROLLER, 2650 kHz SWITCHING FREQ-MAX, PQCC20
LTC4098EUDC-1#PBF BATTERY CHARGE CONTROLLER, 2650 kHz SWITCHING FREQ-MAX, PQCC20
LTC4110EUHF#TR 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC38
LTC4110EUHF 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC38
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4097EDDB#PBF 制造商:Linear Technology 功能描述:Battery Charger Li-Ion/Li-Pol 1200mA 4.2V 12-Pin DFN EP
LTC4097EDDB#TRMPBF 功能描述:IC CHARGER LI-ION/POLY 12-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:Impedance Track™ 功能:燃料，電量檢測(cè)計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.4 V ~ 2.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁(yè)面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名稱:296-21665-2
LTC4097EDDB#TRPBF 功能描述:IC CHARGER LI-ION/POLY 12-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件
LTC4098 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual-Input Power Manager
LTC4098-1 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual-Input Power Manager
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*