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参数资料
| 型号： | LTC4069EDC#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/18页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION 6-DFN |
| 标准包装： | 500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 3.75 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFDFN 裸露焊盘 |
| 供应商设备封装： | 6-DFN-EP（2x2） |
| 包装： | 带卷 (TR) |
LTC4069
OPERATION
POWER
ON
TEMPERATURE
NOT OK
UVLO
IF V CC > 3.6V AND
V CC > V BAT + 80mV?
YES
NTC FAULT
BATTERY CHARGING SUSPENDED
CHRG PULSES (2Hz)
NO
UVLO MODE
CHRG HIGH IMPEDANCE
V BAT > 4.1V
STANDBY MODE
NO CHARGE CURRENT
CHRG HIGH IMPEDANCE
TEMPERATURE NOT OK
V BAT ≤ 2.9V
TRICKLE CHARGE MODE
TEMPERATURE OK
2.9V < V BAT < 4.1V
FAST CHARGE MODE
1/10 FULL CHARGE CURRENT
CHRG STRONG PULL-DOWN
FULL CHARGE CURRENT
CHRG STRONG PULL-DOWN
1/4 CHARGE CYCLE
(1.125 HOURS)
DEFECTIVE BATTERY
IS V BAT < 2.9V?
YES
BAD BATTERY MODE
NO CHARGE CURRENT
CHRG PULSES (2Hz)
V CC < 3V
NO
CHARGE CYCLE
(4.5 HOURS)
RECHARGE
IS V BAT < 4.1V?
YES
RECHARGE MODE
FULL CHARGE CURRENT
CHRG STRONG PULL-DOWN
1/2 CHARGE CYCLE
(2.25 HOURS)
NO
4069 F02
Figure 2. State Diagram of LTC4069 Operation
In typical operation, the charge cycle begins in con-
stant-current mode with the current delivered to the battery
equal to 1000V/R PROG . If the power dissipation of the
LTC4069 results in the junction temperature approaching
115°C, the amplifier (TA) will begin decreasing the charge
current to limit the die temperature to approximately 115°C.
As the battery voltage rises, the LTC4069 either returns to
constant-current mode or enters constant-voltage mode
straight from constant-temperature mode.
Regardless of mode, the voltage at the PROG pin is pro-
portional to the current delivered to the battery.
Battery Temperature Monitoring via NTC
The battery temperature is measured by placing a negative
temperature coefficient (NTC) thermistor close to the
battery pack. The NTC circuitry is shown in Figure 3.
To use this feature, connect the NTC thermistor, R NTC , be-
tween the NTC pin and ground and a resistor, R NOM , from
the NTC pin to V CC . R NOM should be a 1% resistor with a
value equal to the value of the chosen NTC thermistor at
25°C (this value is 100k for a Vishay NTHS0603N01N1003J
thermistor). The LTC4069 goes into hold mode when the
10
For more information www.linear.com/LTC4069
4069fc
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4069EDC-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Standalone 750mA Li-Ion Battery Charger in 2 × 2 DFN with NTC Thermistor Input |
| LTC4070 | 制造商:LINEAR 制造商全称:LINEAR 功能描述:Ultralow Voltage Step-Up Converter and Power Manager |
| LTC4070EDDB | 制造商:LINER 制造商全称:Linear Technology 功能描述:Li-Ion/Polymer Shunt Battery Charger System |
| LTC4070EDDB#PBF | 制造商:Linear Technology 功能描述:Battery Charger Li-Ion/Li-Pol 50mA 4.2V 10-Pin DFN EP Bulk 制造商:Linear Technology 功能描述:IC BATTERY CHARGER 50mA DFN-8 制造商:Linear Technology 功能描述:IC, BATTERY CHARGER, 50mA, DFN-8 制造商:Linear Technology 功能描述:IC, BATTERY CHARGER, 50mA, DFN-8; Battery Type:Li-Ion, Li-Polymer; Battery Charge Voltage:4.2V; Charge Current Max:50mA; Battery IC Case Style:DFN; No. of Pins:8; No. of Series Cells:1; Operating Temperature Min:-40C ;RoHS Compliant: Yes |
| LTC4070EDDB#TRMPBF | 功能描述:IC LI-ION/POLY BATT CHARGER 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
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