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参数资料
| 型号： | LTC4096EDD#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封装： | 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10 |
| 文件页数： | 16/16页 |
| 文件大小： | 177K |
| 代理商： | LTC4096EDD#PBF |
LTC4096/LTC4096X
9
4096xf
OPERATION
The LTC4096 is designed to efciently manage charging a
single-cell lithium-ion battery from two separate voltage
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 LTC4096 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 LTC4096 can charge a battery from either the wall
adapter input or the USB port input. The LTC4096 automati-
cally senses the presence of voltage at each input. If both
voltage sources are present, the LTC4096 defaults to the
wall adapter source provided sufcient voltage is present
at the DCIN input. “Sufcient voltage” 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 power present output pin (PWR) indicates that suf-
cient input voltage is available. Table 1 describes the
behavior of this status output.
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;
VPWR = VDCIN – RDC-PWR IPWR
USBIN current < 25A
Charger powered from wall adapter source
VPWR = VDCIN – RDC-PWR IPWR
VDCIN < 4.2V or
VDCIN < BAT + 30mV
Charger powered from USB source;
VPWR = VUSBIN – RUSB-PWR IPWR
No charging
PWR: Hi-Z
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.
R
V
I
V
R
IUSB
CHRG USB
IUS
==
1000
()
,
B
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)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4096X | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Standalone Li-Ion Battery Chargers |
| LTC4096XEDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Standalone Li-Ion Battery Chargers |
| LTC4096XEDD#PBF | 功能描述:IC CHARGER LI-ION DL 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4096XEDD#TRPBF | 功能描述:IC CHARGER LI-ION DL 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4097 | 制造商:LINER 制造商全称:Linear Technology 功能描述:USB/Wall Adapter Standalone Li-Ion/Polymer Battery Charger |
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