- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄224115 > LTC4052EMS8E-4.2#PBF (LINEAR TECHNOLOGY CORP) Lithium-Ion Battery Pulse Charger with Overcurrent Protection; Package: MSOP; No of Pins: 8; Temperature Range: -40°C to +125°C PDF資料下載
參數(shù)資料
| 型號(hào)： | LTC4052EMS8E-4.2#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Lithium-Ion Battery Pulse Charger with Overcurrent Protection; Package: MSOP; No of Pins: 8; Temperature Range: -40°C to +125°C |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 165K |
| 代理商： | LTC4052EMS8E-4.2#PBF |
LTC4052-4.2
9
405242f
In addition, feedthrough vias or plated through holes (lo-
cated directly beneath the package and elsewhere) connect-
ing internal copper and backside copper layers help transfer
and spread the heat generated by the package.
Calculating Junction Temperature
Example: Find the maximum junction temperature for a
battery voltage of 4V (VIN will collapse to approximately
VBAT in the full charge mode), charge current of 1A and a
maximum ambient temperature of 75
°C.
The power dissipated by the IC is:
P= (IBAT IBAT RDS(ON)) + (VIN IIN)
= (1A 1A 0.35
) + (4V 0.7mA)
= 0.35 + 0.003
= 0.353W
The LTC4052 is available in an enhanced 8-pin MSOP
package which features an exposed copper pad on the
bottom of the package allowing it to be soldered directly to
the PC board copper for maximum heat transfer. This
greatly reduces the thermal resistance and increases the
power handling capability when compared to a standard
MSOP package. The junction to ambient thermal resis-
tance of this package when the backside of the package is
APPLICATIO S I FOR ATIO
WU
U
soldered to the PC board is approximately 35
°C/W de-
pending on the copper area. The junction temperature rise
above ambient will be approximately:
(0.353W)(35
°C/W) = 12.36°C
The maximum junction temperature will be equal to the
maximum junction temperature rise above ambient plus
the maximum ambient temperature or:
TJMAX = 85°C + 12.36°C = 97.36°C
ACPR Output Pin
When the input voltage is 45mV higher than the voltage at
the BAT pin, the ACPR pin is pulled to ground to indicate
that the input supply (wall adapter) is applied. After the
input supply is removed, this pin will become high imped-
ance. An internal 100ms filter prevents the LTC4052 from
turning off if the voltage at the VIN pin rings and gets too
close to VBAT due to parasitic inductance.
Stop Charging
The charger is off when the voltage at the VIN pin is less
than 45mV above VBAT (sleep mode). The charge pump
and the internal pass transistor are turned off, and the
internal resistor divider is disconnected to reduce the
current drain on the battery in the sleep mode.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC4052EMS8E-4.2#TRPBF | Lithium-Ion Battery Pulse Charger with Overcurrent Protection; Package: MSOP; No of Pins: 8; Temperature Range: -40°C to +125°C |
| LTC4053EDD-4.2#PBF | USB Compatible Lithium-Ion Battery Charger with Thermal Regulation; Package: DFN; No of Pins: 10; Temperature Range: -40°C to +125°C |
| LTC4053EMSE-4.2#PBF | USB Compatible Lithium-Ion Battery Charger with Thermal Regulation; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +125°C |
| LTC4053EMSE-4.2#TRPBF | USB Compatible Lithium-Ion Battery Charger with Thermal Regulation; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +125°C |
| LTC4054ES5-4.2#TRMPBF | Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT; Package: SOT; No of Pins: 5; Temperature Range: -40°C to +125°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4053 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:150mA Standalone Linear Li-Ion Battery Charger in ThinSOT |
| LTC4053-4.2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:USB Compatible Lithium-Ion Battery Charger with Thermal Regulation |
| LTC4053EDD-4.2 | 制造商:Linear Technology 功能描述:Battery Charger Li-Ion 500mA 4.2V 10-Pin DFN EP |
| LTC4053EDD-4.2#PBF | 功能描述:IC CHARGER BATTERY USB 10-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 |
| LTC4053EDD-4.2#TRPBF | 功能描述:IC CHARGER BATTERY USB 10-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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。