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参数资料
| 型号： | LTC1734ES6-4.2#TR |
| 厂商： | Linear Technology |
| 文件页数： | 3/12页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR LI-ION LIN SOT23-6 |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子，镍镉，镍氢 |
| 电源电压： | 4.55 V ~ 8 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 供应商设备封装： | TSOT-23-6 |
| 包装： | 带卷 (TR) |
| 其它名称： | LTC1734ES6-4.2TR |
LTC1734
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V CC = 5V, GND = 0V and V BAT is equal to the float voltage unless
otherwise noted. All current into a pin is positive and current out of a pin is negative. All voltages are referenced to GND, unless
otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Charger Manual Control
V MSDT
Manual Shutdown Threshold
V PROG Increasing
q
2.05
2.15
2.25
V
V MSHYS
Manual Shutdown Hysteresis
V PROG Decreasing from V MSDT
90
mV
I PROGPU
Programming Pin Pull-Up Current
V PROG = 2.5V
–6
–3
– 1.5
μ A
Protection
I DSHRT
Drive Output Short-Circuit Current Limit
V DRIVE = V CC
q
35
65
130
mA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1734E is guaranteed to meet performance specifications
from 0 ° C to 70 ° C ambient temperature range and 0 ° C to 100 ° C junction
temperature range. Specifications over the – 40 ° C to 85 ° C operating
ambient temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: Assumes that the external PNP pass transistor has negligible B-C
reverse-leakage current when the collector is biased at 4.2V (V BAT ) and the
base is biased at 5V (V CC ).
Note 4: Assumes that the external PNP pass transistor has negligible B-E
reverse-leakage current when the emitter is biased at 0V (V CC ) and the
base is biased at 4.2V (V BAT ).
Note 5: The 4.68V maximum undervoltage lockout (UVLO) exit threshold
must first be exceeded before the minimum V CC specification applies.
Short duration drops below the minimum V CC specification of several
microseconds or less are ignored by the UVLO. If manual shutdown is
entered, then V CC must be higher than the 4.68V maximum UVLO
threshold before manual shutdown can be exited. When operating near the
minimum V CC , a suitable PNP transistor with a low saturation voltage
must be used.
TYPICAL PERFOR A CE CHARACTERISTICS
Float Voltage vs Temperature
and Supply Voltage
Float Voltage vs I BAT
I BAT1 vs Temperature
and Supply Voltage
4.21
I BAT = 10mA
PNP = FCX589
4.2V OPTION
4.201
V CC = 5V
T A = 25 ° C
PNP = FCX589
210
R PROG = 7.5k
PNP = FCX589
4.2V OPTION
R PROG = 2150 ?
4.20
V CC = 4.55V
V CC = 8V
4.200
200
V CC = 4.55V AND 8V
4.19
–50 –25
0
25
50
75
100
125
4.199
0
100
200
300
400
500
600
700
190
–50 –25
0
25
50
75
100
125
TEMPERATURE ( ° C)
1734 G01
I BAT (mA)
1734 G02
TEMPERATURE ( ° C)
1734 G03
3
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