参数资料
型号: LT1999HMS8-50#PBF
厂商: Linear Technology
文件页数: 10/24页
文件大小: 0K
描述: IC OP AMP CURRENT SENSE 8-MSOP
标准包装: 50
放大器类型: 电流检测
电路数: 1
输出类型: 带缓冲
转换速率: 3 V/µs
-3db带宽: 1.2MHz
电流 - 输入偏压: 137.5µA
电压 - 输入偏移: 500µV
电流 - 电源: 5.8mA
电流 - 输出 / 通道: 40mA
电压 - 电源,单路/双路(±): 4.5 V ~ 5.5 V
工作温度: -40°C ~ 125°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-MSOP
包装: 管件
LT1999-10/LT1999-20/
LT1999-50
18
1999fb
applicaTions inForMaTion
VOUT
VREF
VSHDN
LT1999
4k
0.8k
160k
2A
0.8k
4k
SHDN
V+
+
+
8
1
2
3
4
7
6
5
RG
V+
VS
5V
1999 F05
0.1F
FUSE
STEERING
DIODE
LOAD
ILOAD
RSENSE
OFF
ON
5V
VOUT
V+IN
V–IN
VREF
VSHDN
Figure 5. Using the LT1999 to Monitor a Fuse
Fuse Monitor
The inputs can be overdriven without fear of damaging
the LT1999. This makes the LT1999 ideal for monitoring
fuses if either +IN or –IN are shorted to ground while the
other is at the full common mode supply voltage (see
Figure 5). If the fuse in Figure 5 opens with the +IN tied
to the positive supply, the load will pull –IN to GND. The
output will be forced to the positive V+ supply rail. If it is
desired that the output be near ground if the fuse opens,
it is a simple matter of swapping the inputs. Precautions
should be followed: First, when the inputs are stressed
differentially due to the fuse blowing open, a large voltage
drop will be placed across the +IN to –IN pins, dissipating
power in the precision on-chip input resistors. Precaution
should be taken to prevent junction temperatures from
exceedingtheAbsoluteMaximumratings(seeNote3inthe
Electrical Characteristics section). Secondly, if the load is
inductive, and the fuse blows open without a clamp diode,
energy stored in the inductive load will be dissipated in
the LT1999, which could cause damage. A simple steering
diode as shown in Figure 5 will prevent this from happen-
ing, and will protect the LT1999 from damage.
Finally, the user should be aware that in fuse monitoring
applications with the sense voltage (VSENSE = V+IN – V–IN)
being driven in excess of –25V, the output of the LT1999
will undergo phase reversal (see Figure 6).
Figure 6. A Plot of the LT1999’s Output Voltage vs VSENSE (VSENSE = V+IN – V–IN).
In Applications Where the Sense Voltage Is Driven in Excess of –25V, the Output
of the LT1999 Will Undergo Phase Reversal
VSENSE (V)
–60
V OUT
(1V
/DIV)
–30
–45
–15
30
1999 F06
60
15
45
0
VOUT PHASE REVERSAL FOR VSENSE < –25V
VREF = 2.5V
相关PDF资料
PDF描述
TSW-122-23-T-S CONN HEADER 22POS .100" SNGL TIN
LT1999HS8-20#PBF IC OP AMP CURRENT SENSE 8-SOIC
LT1999HMS8-20#PBF IC OP AMP CURRENT SENSE 8-MSOP
LT1999HS8-10#PBF IC OP AMP CURRENT SENSE 8-SOIC
TSW-111-14-L-S CONN HEADER 11POS .100" SGL GOLD
相关代理商/技术参数
参数描述
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LT1999HS8-20#PBF 功能描述:IC OP AMP CURRENT SENSE 8-SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源,单路/双路(±):3 V ~ 32 V,±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP(0.173",4.40mm 宽) 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR
LT1999HS8-20#TRPBF 功能描述:IC AMP CURR SENSE HV 8-SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:100 系列:- 放大器类型:通用 电路数:1 输出类型:- 转换速率:0.2 V/µs 增益带宽积:- -3db带宽:- 电流 - 输入偏压:100pA 电压 - 输入偏移:30µV 电流 - 电源:380µA 电流 - 输出 / 通道:- 电压 - 电源,单路/双路(±):±2 V ~ 18 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-SO 包装:管件