Datasheet > 电源电路 > 电源管理电路> LTC4078XEDD-PBF

LTC4078XEDD-PBF

更新时间： 2024-02-12 14:00:53

品牌	Logo	应用领域
凌特 - Linear		电池
页数	文件大小	规格书
16页	182K
描述
Dual Input Li-Ion Battery Charger with Overvoltage Protection

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

LTC4078XEDD-PBF 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	DFN	包装说明：	HVSON, SOLCC10,.11,20
针数：	10	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.17	可调阈值：	NO
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT	JESD-30 代码：	S-PDSO-N10
JESD-609代码：	e3	长度：	3 mm
湿度敏感等级：	1	信道数量：	1
功能数量：	1	端子数量：	10
最高工作温度：	85 °C	最低工作温度：
封装主体材料：	PLASTIC/EPOXY	封装代码：	HVSON
封装等效代码：	SOLCC10,.11,20	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	260
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	0.8 mm	子类别：	Power Management Circuits
最大供电电流 (Isup)：	0.8 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	4.3 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	OTHER	端子面层：	Matte Tin (Sn)
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
宽度：	3 mm	Base Number Matches：	1

LTC4078XEDD-PBF 数据手册

LTC4078X

PIN FUNCTIONS

USBIN (Pin 1): USB Input Supply Pin. This input provides

an internal N-channel MOSFET. When the charge cycle is

completed, CHRG becomes high impedance. This output

is capable of driving an LED.

power to the battery charger assuming a voltage greater

than V

and less than V

is present (typically

UVUSB

OVUSB

3.95V to ꢀV respectively). However, the DCIN input will

take priority if a voltage greater than V is present at

DCIN (typically 4.15V). The USBIN input allows charge

currents up to 850mꢁ. This pin should be bypassed with

a 1µF capacitor.

ENABLE (Pin 6): Enable Input. When the LTC4078X is

charging from the DCIN source, a logic low on this pin

enables the charger. When the LTC4078X is charging

from the USBIN source, a logic high on this pin enables

the charger. If this input is left ﬂoating, an internal 2MΩ

pulldown resistor defaults the LTC4078X to charge when

a wall adapter is applied and to shut down if only the USB

source is applied.

UVDC

IUSB (Pin 2): Charge Current Program for USB Power.

The charge current is set by connecting a resistor, R

IUSB

to ground. When charging in constant-current mode, this

pin servos to 1V. The voltage on this pin can be used to

measure the battery current delivered from the USB input

using the following formula:

BATDET (Pin 7): Battery Detection Input. When the volt-

age on this pin falls below V

(typically 1.75V), the

BDET

charger is on and ready for charging a battery. If this

input is left ﬂoating, an internal pull-up resistor will dis-

able charging.

R_IUSB

IUSB

I_BAT

•1000

IDC (Pin 8): Charge Current Program for Wall ꢁdapter

ITERM (Pin 3): Termination Current Threshold Program.

Power. The charge current is set by connecting a resis-

The termination current threshold, I

, is set by

is set

tor, R , to ground. When charging in constant-current

TERMINꢁTE

IDC

connecting a resistor, R

, to ground. I

mode, this pin servos to 1V. The voltage on this pin can

be used to measure the battery current delivered from the

DC input using the following formula:

ITERM

TERMINꢁTE

by the following formula:

100V

R_ITERM

I_TERMINATE

R_IDC

IDC

I_BAT

•1000

When the battery current, I , falls below the termination

BꢁT

threshold, charging stops and the CHRG output becomes

high impedance. This pin is internally clamped to approxi-

mately 1.5V. Driving this pin to voltages beyond the clamp

voltage should be avoided.

BAT (Pin 9): Battery Charger Output. This pin provides

charge current to the battery and regulates the ﬁnal ﬂoat

voltage to 4.2V.

DCIN (Pin 10): Wall ꢁdapter Input Supply Pin. This input

PWR (Pin 4): Open-Drain Power Supply Status Output.

WhentheDCINorUSBINpinvoltageisvalidtobegincharg-

ing (i.e. when the supply is greater than the undervoltage

lockoutthreshold,lessthantheovervoltagelockoutthresh-

old and at least 120mV above the battery terminal), the

PWR pin is pulled low by an internal N-channel MOSFET.

Otherwise PWR is high impedance. This output is capable

of driving an LED.

provides power to the battery charger assuming a voltage

greater than V

and less than V

is present (typi-

UVDC

OVDC

cally4.15VtoꢀVrespectively). ꢁvalidvoltageontheDCIN

input will always take priority over the USBIN input. The

DCIN input allows charge currents up to 950mꢁ. This pin

should be bypassed with a 1µF capacitor.

Exposed Pad (Pin 11): GND. The exposed backside of the

packageisgroundandmustbesolderedtoPCboardground

for electrical connection and maximum heat transfer.

CHRG (Pin 5): Open-Drain Charge Status Output. When

the LTC4078X is charging, the CHRG pin is pulled low by

4078xf

1...4 5 678 9 10...16

下载PDF

与LTC4078XEDD-PBF相关器件

型号	品牌	描述	获取价格	数据表
LTC4078XEDD-TRPBF	Linear	Dual Input Li-Ion Battery Charger with Overvoltage Protection	获取价格
LTC4079	ADI	具低静态电流的 60V、250mA 线性充电器	获取价格
LTC4079EDD#PBF	Linear	LTC4079 - 60V, 250mA Linear Charger with Low Quiescent Current; Package: DFN; Pins: 10; Te	获取价格
LTC4079EDD#TRPBF	Linear	LTC4079 - 60V, 250mA Linear Charger with Low Quiescent Current; Package: DFN; Pins: 10; Te	获取价格
LTC4079IDD#PBF	Linear	LTC4079 - 60V, 250mA Linear Charger with Low Quiescent Current; Package: DFN; Pins: 10; Te	获取价格
LTC4080	Linear	500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck	获取价格

与LTC4078XEDD-PBF相关文章

STM32H743技术深度剖析与应用案例探索
2024-05-30

15
LM321中文资料解析：引脚功能介绍、技术特点、技术特性分析
2024-05-30

15
74HC14芯片资料介绍：性能特性分析、引脚介绍
2024-05-30

13
LM1875芯片手册：功放参数分析、引脚说明、电路设计要点
2024-05-30

10

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC4078XEDD-PBF

LTC4078XEDD-PBF 技术参数

LTC4078XEDD-PBF 数据手册

与LTC4078XEDD-PBF相关器件

与LTC4078XEDD-PBF相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC4078XEDD-PBF

LTC4078XEDD-PBF 技术参数

LTC4078XEDD-PBF 数据手册

与LTC4078XEDD-PBF相关器件

与LTC4078XEDD-PBF相关文章

您还可以找

您在本页遇到什么问题？