- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄44995 > LTC4065EDC-4.4#PBF (LINEAR TECHNOLOGY CORP) 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 PDF資料下載
參數(shù)資料
| 型號： | LTC4065EDC-4.4#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | 2 X 2 MM, LEAD FREE, PLASTIC, MO-229WCCD-2, DFN-6 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 178K |
| 代理商： | LTC4065EDC-4.4#PBF |
9
LTC4065-4.4
406544f
OPERATIO
U
Undervoltage Lockout (UVLO)
An internal undervoltage lockout circuit monitors the input
voltage and keeps the charger in undervoltage lockout
until VCC rises above 3.6V and approximately 80mV above
the BAT pin voltage. The 3.6V UVLO circuit has a built-in
hysteresis of approximately 0.6V and the automatic shut-
down threshold has a built-in hysteresis of approximately
50mV. During undervoltage lockout conditions, maxi-
mum battery drain current is 4
A and maximum supply
current is 11
A.
Shutdown Mode
The LTC4065-4.4 can be disabled by pulling the EN pin
above the shutdown threshold (approximately 0.82V). In
shutdown mode, the battery drain current is reduced to
less than 1
A and the supply current to about 20A.
Timer and Recharge
The LTC4065-4.4 has an internal termination timer that
starts when an input voltage greater than the undervoltage
lockout threshold is applied to VCC, or when leaving
shutdown the battery voltage is less than the recharge
threshold.
At power-up or when exiting shutdown, if the battery
voltage is less than the recharge threshold, the charge
time is set to 4.5 hours. If the battery voltage is greater than
the recharge threshold at power-up or when exiting shut-
down, the timer will not start and charging is prevented
since the battery is at or near full capacity.
Once the charge cycle terminates, the LTC4065-4.4 con-
tinuously monitors the BAT pin voltage using a compara-
tor with a 2ms filter time. When the average battery voltage
falls below 4.3V (which corresponds to 80% to 90%
battery capacity), a new charge cycle is initiated and a 2.25
hour timer begins. This ensures that the battery is kept at,
or near, a fully charged condition and eliminates the need
for periodic charge cycle initiations. The CHRG output
assumes a strong pull-down state during recharge cycles
until C/10 is reached when it transitions to a high
impendance state.
Trickle Charge and Defective Battery Detection
At the beginning of a charge cycle, if the battery voltage is
low (below 2.9V), the charger goes into trickle charge,
reducing the charge current to 10% of the full-scale
current. If the low-battery voltage persists for one quarter
of the total time (1.125 hour), the battery is assumed to be
defective, the charge cycle is terminated and the CHRG pin
output pulses at a frequency of 2Hz with a 75% duty cycle.
If for any reason the battery voltage rises above 2.9V, the
charge cycle will be restarted. To restart the charge cycle
(i.e., when the defective battery is replaced with a dis-
charged battery less than 2.9V), simply remove the input
voltage and reapply it, or temporarily pull the EN pin above
the shutdown threshold.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC4070IDDB#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| LTC4070EMS8E#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| LTC4070EDDB#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| LTC4071EMS8E#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| LTC4071EDDB#TRMPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4065L | 制造商:LINEAR 制造商全稱:LINEAR 功能描述:Standalone 250mA Li-Ion Battery Charger in 2 × 2 DFN |
| LTC4065L_12 | 制造商:LINEAR 制造商全稱:LINEAR 功能描述:Standalone 250mA Li-Ion Battery Charger in 2 × 2 DFN |
| LTC4065LEDC#TRM | 制造商:Linear Technology 功能描述:BATT CHARGER LI ON 250MA 6DFN |
| LTC4065LEDC#TRMPBF | 功能描述:IC CHARGER LI-ION 6-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標準包裝:4,000 系列:- 功能:燃料，電量檢測計/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC4065LEDC#TRPBF | 功能描述:IC CHARGER LI-ION 6-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝: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)。