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参数资料
| 型号： | LTC4151CS-2#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | 0.150 INCH, LEAD FREE, PLASTIC, SOP-16 |
| 文件页数： | 17/18页 |
| 文件大小： | 476K |
| 代理商： | LTC4151CS-2#TRPBF |
LTC4151
8
4151fc
APPLICATIONS INFORMATION
The LTC4151 offers a compact complete solution for high
side power monitoring. With a wide operating voltage
range from 7V to 80V, this device is ideal for a variety of
applicationsincludingconsumer,automotive,industrialand
telecom infrastructure. The simple application circuit as
showninFigure1providesmonitoringofhighsidecurrent
with a 0.02
W resistor (4.096A in full scale), input voltage
(102.4V in full scale) and an external voltage (2.048V in
full scale), all with an internal 12-bit resolution ADC.
Data Converter
The LTC4151 features an onboard, 12-bit
Σ A/D con-
verter (ADC) that continuously monitors three voltages
in the sequence of (VSENSE+ – VSENSE–) first, VIN second
and VADIN third. The Σ architecture inherently aver-
ages signal noise during the measurement period. The
differential voltage between SENSE+ and SENSE– is
monitored with an 81.92mV full scale and 20V resolu-
tion that allows accurate measurement of the high side
input current. SENSE+ is a Kelvin sense pin for the VIN
pin and must be connected to VIN (see Figure 10) for
proper ADC readout. The supply voltage at VIN is directly
measured with a 102.4V full scale and 25mV resolution.
The voltage at the uncommitted ADIN pin is measured
with a 2.048V full scale and 0.5mV resolution that allows
monitoring of any external voltage. The 12-bit digital
Figure 1. Monitoring High Side Current and Voltages Using the LTC4151
code of each measured voltage is stored in two adjacent
registers out of the six total data registers A through F,
with the eight MSBs in the first register and the four LSBs
in the second (Table 2).
ThedatainregistersAthroughFisrefreshedatafrequency
of 7.5Hz in continuous scan mode. Setting control register
bit G4 (Table 6) invokes a test mode that halts updating
of these registers so that they can be written to and read
from for software testing.
The data converter features a snapshot mode allowing us-
ers to make one-time measurements of a selected voltage
(either the SENSE voltage, VIN voltage, or ADIN voltage).
To enable snapshot mode, set control register bit G7 and
write the 2-bit code of the desired ADC channel to G6
and G5 (Table 6) using a Write Byte command. When the
Write Byte command is completed, the ADC measures the
selected voltage and a Busy Bit in the LSB data register
is set to indicate that the data is not ready. After complet-
ing the conversion, the ADC is halted and the Busy Bit is
reset to indicate that the data is ready. To make another
measurement of the same voltage or to measure another
voltage, first disable the snapshot mode for the previous
measurementbyclearingcontrolbitG7,thenre-enablethe
snapshot mode and write the code of the desired voltage
according to the procedure described above. The Busy Bit
remains reset in the continuous scan mode.
4151 F01
0.02
-CONTROLLER
LTC4151
SHDN
VIN
7V TO 80V
VIN
VDD
VADIN
SCL
SDA
ADIN
ADR1
SCL
SDA
ADR0
GND
SENSE+ SENSE–
3.3V
VOUT
2k
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| LTC4151HDD#PBF | 功能描述:IC PWR MONITOR MS 80V SD 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
| LTC4151HDD#TRPBF | 功能描述:IC PWR MONITOR MS 80V SD 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
| LTC4151HMS#PBF | 功能描述:IC PWR MONITOR MS 80V SD 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
| LTC4151HMS#TRPBF | 功能描述:IC PWR MONITOR MS 80V SD 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
| LTC4151IDD#PBF | 功能描述:IC CURRENT MONITOR(12BIT) 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
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