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參數(shù)資料
| 型號(hào)： | LTC4054 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 熱敏電阻 |
| 英文描述： | Standalone Linear Li-lon Battery Charger with Thermistor Input |
| 中文描述： | 獨(dú)立線性鋰離子電池充電器熱敏電阻輸入 |
| 文件頁(yè)數(shù)： | 10/16頁(yè) |
| 文件大小： | 191K |
| 代理商： | LTC4054 |
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10
LTC4054L-4.2
4054l42f
OPERATIOU
Manual Shutdown
At any point in the charge cycle, the LTC4054L can be put
into shutdown mode by removing R
PROG
thus floating the
PROG pin. This reduces the battery drain current to less
than 2
μ
A and the supply current to less than 50
μ
A. A new
charge cycle can be initiated by reconnecting the program
resistor.
In manual shutdown, the CHRG pin is in a weak pull-down
state as long as V
CC
is high enough to exceed the UVLO
conditions. The CHRG pin is in a high impedance state if
the LTC4054L is in undervoltage lockout mode: either V
CC
is within 100mV of the BAT pin voltage or insufficient
voltage is applied to the V
CC
pin.
Automatic Recharge
Once the charge cycle is terminated, the LTC4054L con-
tinuously monitors the voltage on the BAT pin using a
comparator with a 2ms filter time (t
RECHARGE
). A charge
cycle restarts when the battery voltage falls below 4.05V
(which corresponds to approximately 80% to 90% battery
capacity). This ensures that the battery is kept at or near
a fully charged condition and eliminates the need for
periodic charge cycle initiations. CHRG output enters a
strong pull-down state during recharge cycles.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4054-4.2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT |
| LTC4054ES5-4.2 | 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 |
| LTC4054ES54.2#PBF | 制造商:Linear Technology 功能描述: |
| LTC4054ES5-4.2#PBF | 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 Bulk |
| LTC4054ES5-4.2#TR | 功能描述:IC CHARGR BATTERY L-ION TSOT23-5 RoHS:否 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 |
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