参数资料
| 型号： | LTC4088EDE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHARGER/USB 14-DFN |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 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： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-DFN-EP（4x3） |
| 包装： | 带卷 (TR) |
LTC4088
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. V BUS = 5V, BAT = 3.8V, R CLPROG = 2.94k, unless otherwise noted.
SYMBOL
I OUT
V CLPROG
V UVLO
V DUVLO
V OUT
f OSC
PARAMETER
V OUT Current Available Before
Discharging Battery
CLPROG Servo Voltage in Current Limit
V BUS Undervoltage Lockout
V BUS to BAT Differential Undervoltage
Lockout
V OUT Voltage
Switching Frequency
CONDITIONS
1x Mode, BAT = 3.3V
5x Mode, BAT = 3.3V
10x Mode, BAT = 3.3V
Low Power Suspend Mode
High Power Suspend Mode
1x, 5x, 10x Modes
Suspend Modes
Rising Threshold
Falling Threshold
Rising Threshold
Falling Threshold
1x, 5x, 10x Modes, 0V < BAT ≤ 4.2V,
I OUT = 0mA, Battery Charger Off
USB Suspend Modes, I OUT = 250μA
MIN
0.26
1.6
3.95
3.5
4.5
1.8
TYP
135
672
1251
0.32
2.04
1.188
100
4.30
4.00
200
50
BAT + 0.3
4.6
2.25
MAX
0.41
2.46
4.35
4.7
4.7
2.7
UNITS
mA
mA
mA
mA
mA
V
mV
V
V
mV
mV
V
V
MHz
R PMOS
R NMOS
PMOS On Resistance
NMOS On Resistance
0.18
0.30
Ω
Ω
I PEAK
R SUSP
Peak Inductor Current Clamp
Suspend LDO Output Resistance
1x, 5x Modes
10x Mode
2
3
15
A
A
Ω
Battery Charger
V FLOAT
I CHG
I BAT
BAT Regulated Output Voltage
Constant-Current Mode Charge Current
Battery Drain Current
0°C ≤ T A ≤ 85°C
R PROG = 1k
R PROG = 5k
V BUS > V UVLO , PowerPath Switching
Regulator On, Battery Charger Off,
I OUT = 0μA
4.179
4.165
980
192
4.200
4.200
1030
206
3.5
4.221
4.235
1080
220
5
V
V
mA
mA
μA
V BUS = 0V, I OUT = 0μA (Ideal Diode Mode)
23
35
μA
V PROG
PROG Pin Servo Voltage
1.000
V
V PROG,TRKL
h PROG
PROG Pin Servo Voltage in Trickle
Charge
Ratio of I BAT to PROG Pin Current
BAT < V TRKL
0.100
1031
V
mA/mA
V TRKL
Trickle Charge Threshold Voltage
BAT Rising
2.7
2.85
3.0
V
ΔV TRKL
Trickle Charge Hysteresis Voltage
135
mV
V RECHRG
t TERM
t BADBAT
I C/X
Recharge Battery Threshold Voltage
Safety Timer Termination Period
Bad Battery Termination Time
Battery Charge Current at Programmed
End of Charge Indication
Threshold Voltage Relative to V FLOAT
Timer Starts when V BAT = V FLOAT
BAT < V TRKL
R C/X = 1k
R C/X = 5k
–80
3.2
0.4
85
–100
4.0
0.5
100
20
–120
4.8
0.6
115
mV
Hour
Hour
mA
mA
V C/X
h C/X
C/X Threshold Voltage
Battery Charge Current Ratio to C/X
100
1031
mV
mA/mA
V CHRG
I CHRG
CHRG Pin Output Low Voltage
CHRG Pin Input Current
I CHRG = 5mA
BAT = 4.5V, V CHRG = 5V
65
0
100
1
mV
μA
4088fb
3
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