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参数资料
| 型号： | LTC4099EUDC#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/36页 |
| 文件大小： | 0K |
| 描述： | IC USB PWR MANAGER/CHRGR 20-QFN |
| 标准包装： | 91 |
| 系列： | PowerPath™ |
| 功能： | 电源管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4.35 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（3x4） |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
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LTC4099
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC4099 is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the – 40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: The LTC4099 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 4: Total input current is the sum of quiescent current, I VBUSQ , and
measured current given by:
V CLPROG /R CLPROG ? (h CLPROG + 1)
Note 5: The PROG pin always represents actual charge current. See the
Full Capacity Charge Indication (C/x) section.
TYPICAL PERFORMANCE CHARACTERISTICS
R CLPROG = 3.01k, unless otherwise noted.
T A = 25°C, V BUS = 5V, BAT = 3.8V, R PROG = 1.02k,
Battery and V BUS Currents
vs Output Current
Battery and V BUS Currents
vs Output Current
Output Voltage vs Output Current
600
V BUS CURRENT
800
V BUS CURRENT
5.0
200
400
BATTERY
CURRENT
(CHARGING)
0
BATTERY
CURRENT
–200 (DISCHARGING)
V BUS INPUT LIMIT SET
–400 FOR USB 500mA
BATTERY CHARGER SET
FOR 800mA
–600
0 200 400 600
800
1000
600
400
200
0
–200
0
V BUS INPUT LIMIT SET
FOR 790mA
BATTERY CHARGER SET
FOR 500mA
200 400
BATTERY
CURRENT
(CHARGING)
BATTERY
CURRENT
(DISCHARGING)
600 800 1000
4.5
4.0
3.5
3.0
0
BAT = 4V
BAT = 3.4V
V BUS INPUT LIMIT SET
FOR USB 500mA
BATTERY CHARGER DISABLED
200 400 600
800
1000
OUTPUT CURRENT (mA)
4099 G01
OUTPUT CURRENT (mA)
4099 G02
OUTPUT CURRENT (mA)
4099 G03
25
20
15
Battery Drain Current
vs Battery Voltage
I VOUT = 0μA
V BUS = 0V
100
90
80
PowerPath Switching Regulator
Efficiency vs Output Current
V CLPROG = 0V
100mA V BUS INPUT
LIMIT MODE
100
90
80
Battery Charging Efficiency
vs Battery Voltage with No
External Load (P BAT /P VBUS )
500mA USB SETTING
100mA USB SETTING
70
10
70
5
V BUS = 5V
(SUSPEND MODES)
60
50
500mA TO 1.2A
V BUS INPUT LIMIT MODES
60
0
2.7
3.0
3.3
3.6
3.9
4.2
40
0.01
0.1
1
50
2.7
3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
4099 G04
OUTPUT CURRENT (A)
4099 G05
BATTERY VOLTAGE (V)
4099 G06
4099fd
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