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参数资料
| 型号： | LT1512CS8 |
| 厂商： | Linear Technology |
| 文件页数： | 3/12页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR CONST I/V 8-SOIC |
| 标准包装： | 100 |
| 功能： | 充电管理 |
| 电池化学： | 所有电池类型 |
| 电源电压： | 2.7 V ~ 25 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
LT1512
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 5V, V C = 0.6V, V FB = V REF , I FB = 0V, V SW and S/S pins open,
unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V IREF
g m
I FB Reference Voltage
I FB Input Current
I FB Reference Voltage Line Regulation
Error Ampli?er Transconductance
Error Ampli?er Source Current
Measured at I FB Pin
V FB = 0V, V C = 0.8V
V IFB = V IREF (Note 3)
2.7V ≤ V IN ≤ 25V, V C = 0.8V
Δ I C = ± 25μA
V FB = V REF – 150mV, V C = 1.5V
l
l
l
l
l
–107
–110
10
1100
700
120
–100
–100
25
0.01
1500
200
–93
–90
35
0.05
1900
2300
350
mV
mV
μA
%/V
μmho
μmho
μA
A V
Error Ampli?er Sink Current
Error Ampli?er Clamp Voltage
Error Ampli?er Voltage Gain
V C Pin Threshold
V FB = V REF + 150mV, V C = 1.5V
High Clamp, V FB = 1V
Low Clamp, V FB = 1.5V
Duty Cycle = 0%
l
1.70
0.25
0.8
1400
1.95
0.40
500
1
2400
2.30
0.52
1.25
μA
V
V
V/V
V
f
Switching Frequency
2.7V ≤ V IN ≤ 25V
0°C ≤ T J ≤ 125°C
l
450
430
500
500
550
580
kHz
kHz
–40°C ≤ T J < 0°C (LT1512I)
400
580
kHz
Maximum Switch Duty Cycle
Switch Current Limit Blanking Time
l
85
95
130
260
%
ns
BV
Output Switch Breakdown Voltage
0°C ≤ T J ≤ 125°C
l
40
47
V
–40°C ≤ T J < 20°C (LT1512I)
35
V
V SAT
Output Switch ON Resistance
I SW = 2A
l
0.5
0.8
Ω
I LIM
Switch Current Limit
Duty Cycle = 50%
Duty Cycle = 80% (Note 4)
l
l
1.5
1.3
1.9
1.7
2.7
2.5
A
A
Δ I IN
Δ I SW
Supply Current Increase During Switch ON Time
Control Voltage to Switch Current Transconductance
15
2
25
mA/A
A/V
Minimum Input Voltage
l
2.4
2.7
V
I Q
Supply Current
Shutdown Supply Current
2.7V ≤ V IN ≤ 25V
2.7V ≤ V IN ≤ 25V, V S/S ≤ 0.6V
0°C ≤ T J ≤ 125°C
l
l
4
12
5.5
30
mA
μA
–40°C ≤ T J ≤ 0°C (LT1512I)
50
μA
Shutdown Threshold
Shutdown Delay
S/S Pin Input Current
Synchronization Frequency Range
2.7V ≤ V IN ≤ 25V
0V ≤ V S/S ≤ 5V
l
l
l
l
0.6
5
–10
600
1.3
12
2
25
15
800
V
μs
μA
kHz
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: Commercial devices are guaranteed over 0°C to 125°C junction
temperature range and 0°C to 70°C ambient temperature range. These
parts are also designed, characterized and expected to operate over the
–20°C to 85°C extended ambient temperature range, but are not tested at
–20°C or 85°C. Devices with full guaranteed electrical speci?cations over
the ambient temperature range –40°C to 85°C are available as industrial
parts with an “I” suf?x.
Maximum allowable ambient temperature may be limited by power
dissipation. Parts may not necessarily be operated simultaneously
at maximum power dissipation and maximum ambient temperature.
Temperature rise calculations must be done as shown in the Applications
Information section to ensure that maximum junction temperature does
not exceed 125°C limit. With high power dissipation, maximum ambient
temperature may be less than 70°C.
Note 3: The I FB pin is servoed to its regulating state with V C = 0.8V.
Note 4: For duty cycles (DC) between 50% and 85%, minimum guaranteed
switch current is given by I LIM = 0.667 (2.75 – DC).
1512fa
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1512CS8#PBF | 功能描述:IC BATT CHRGR CONST I/V 8-SOIC 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 |
| LT1512CS8#TR | 功能描述:IC CHARGER BATT CONST V/I 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LT1512CS8#TRPBF | 功能描述:IC BATT CHRGR CONST I/V 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LT1512CS8PBF | 制造商:Linear Technology 功能描述:LT1512CS8PBF |
| LT1512I | 制造商:LINER 制造商全称:Linear Technology 功能描述:SEPIC Constant-Current/ Constant-Voltage Battery Charger |
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