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参数资料
| 型号： | LT1511CSW#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 8/16页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR CONST I/V 3A24SOIC |
| 标准包装： | 1,000 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子，镍镉，镍氢 |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC |
| 包装： | 带卷 (TR) |
LT1511
TEST CIRCUITS
Test Circuit 1
SPIN
LT1511
+
SENSE
R S3
200 ?
V C
0.047 μ F
60k
CA2
1k
CA1
–
BAT
R S2
200 ?
R S1
10 ?
+
V BAT
+
V REF
1 μ F
300 ?
PROG
R PROG
1k
LT1006
1511 ? TC01
+
≈ 0.65V
–
20k
Test Circuit 2
LT1511
I PROG
PROG
VA
+
–
V REF
10k
OVP
10k
LT1013
0.47 μ F
R PROG
+
2.465V
1511 ? TC02
OPERATIO N
The LT1511 is a current mode PWM step-down (buck)
switcher. The battery DC charging current is programmed
by a resistor R PROG (or a DAC output current) at the PROG
pin (see Block Diagram). Amplifier CA1 converts the
charging current through R S1 to a much lower current
I PROG fed into the PROG pin. Amplifier CA2 compares the
output of CA1 with the programmed current and drives the
PWM loop to force them to be equal. High DC accuracy is
achieved with averaging capacitor C PROG . Note that I PROG
has both AC and DC components. I PROG goes through R1
and generates a ramp signal that is fed to the PWM control
comparator C1 through buffer B1 and level shift resistors
8
R2 and R3, forming the current mode inner loop. The
Boost pin drives the switch NPN Q SW into saturation and
reduces power loss. For batteries like lithium-ion that
require both constant-current and constant-voltage charg-
ing, the 0.5%, 2.465V reference and the amplifier VA
reduce the charging current when battery voltage reaches
the preset level. For NiMH and NiCd, VA can be used for
overvoltage protection. When input voltage is not present,
the charger goes into low current (3 μ A typically) sleep
mode as input drops down to 0.7V below battery voltage.
To shut down the charger, simply pull the V C pin low with
a transistor.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1511ISW | 功能描述:IC BATT CHRGR CONST I/V 3A24SOIC 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) |
| LT1511ISW#PBF | 功能描述:IC BATT CHRGR CONST I/V 3A24SOIC 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) |
| LT1511ISW#TR | 功能描述:IC CHARGER BATT CONST V/I 24SOIC 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) |
| LT1511ISW#TRPBF | 功能描述:IC BATT CHRGR CONST I/V 3A24SOIC 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) |
| LT1512 | 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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