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LT1970CFE PDF预览

LT1970CFE

更新时间: 2024-09-14 22:51:47
品牌 Logo 应用领域
凌特 - Linear 运算放大器放大器电路光电二极管
页数 文件大小 规格书
12页 234K
描述
500mA Power Op Amp with Adjustable Precision Current Limit

LT1970CFE 技术参数

是否Rohs认证:不符合生命周期:Transferred
零件包装代码:TSSOP包装说明:HTSSOP, TSSOP20,.25
针数:20Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.13Is Samacsys:N
放大器类型:OPERATIONAL AMPLIFIER架构:VOLTAGE-FEEDBACK
标称共模抑制比:105 dB频率补偿:YES
最大输入失调电压:1000 µVJESD-30 代码:R-PDSO-G20
JESD-609代码:e0长度:6.5 mm
低-偏置:NO低-失调:NO
微功率:NO湿度敏感等级:1
功能数量:1端子数量:20
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:HTSSOP
封装等效代码:TSSOP20,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):235
功率:YES电源:+-2.5/+-18/5/36 V
可编程功率:NO认证状态:Not Qualified
座面最大高度:1.2 mm最小摆率:0.7 V/us
标称压摆率:1.6 V/us子类别:Operational Amplifier
最大压摆率:13 mA供电电压上限:36 V
标称供电电压 (Vsup):5 V表面贴装:YES
技术:BIPOLAR温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:20标称均一增益带宽:3600 kHz
最小电压增益:5000宽带:NO
宽度:4.4 mmBase Number Matches:1

LT1970CFE 数据手册

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LT1970  
500mA Power Op Amp with  
Adjustable Precision Current Limit  
U
FEATURES  
DESCRIPTIO  
The LT®1970 is a ±500mA power op amp with precise  
externally controlled current limiting. Separate control  
voltages program the sourcing and sinking current limit  
sense thresholds with 2% accuracy. Output current may  
be boosted by adding external power transistors.  
±500mA Minimum Output Current  
Independent Adjustment of Source and  
Sink Current Limits  
2% Current Limit Accuracy  
Operates with Single or Split Supplies  
Shutdown/Enable Control Input  
Thecircuitoperateswithsingleorsplitpowersuppliesfrom  
5V to 36V total supply voltage. In normal operation, the  
inputstagesuppliesandtheoutputstagesuppliesarecon-  
nected (VCC to V+ and VEE to V). To reduce power dissi-  
pationitispossibletopowertheoutputstage(V+,V)from  
independent,lowervoltagerails.Theamplifierisunity-gain  
stable with a 3.6MHz gain bandwidth product and slews at  
1.6V/µs. The current limit circuits operate with a 2MHz re-  
sponse between the VCSRC or VCSNK control inputs and  
the amplifier output.  
Open Collector Status Flags:  
Sink Current Limit  
Source Current Limit  
Thermal Shutdown  
Fail Safe Current Limit and Thermal Shutdown  
1.6V/µs Slew Rate  
3.6MHz Gain Bandwidth Product  
Fast Current Limit Response: 2MHz Bandwidth  
Specified Temperature Range: 40°C to 85°C  
U
Open collector status flags signal current limit circuit  
activation,aswellasthermalshutdownoftheamplifier.An  
enable logic input puts the amplifier into a low power, high  
impedance output state when pulled low. Thermal shut-  
down and a ±800mA fixed current limit protect the chip  
under fault conditions.  
APPLICATIO S  
Automatic Test Equipment  
Laboratory Power Supplies  
Motor Drivers  
Thermoelectric Cooler Driver  
The LT1970 is packaged in a 20-lead TSSOP package with  
a thermally conductive copper bottom plate to facilitate  
heat sinking.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
AV = 2 Amplifier with Adjustable ±500mA Full-Scale  
Current Limit and Fault indication  
Current Limited Sinewave Into 10Load  
V
LIMIT  
0V TO 5V  
15V  
3k  
15V  
V
LIMIT  
10 • R  
I
= ±  
OUT(LIMIT)  
4V  
CS  
V
CC  
+
V
2V  
VC  
SRC  
VLOAD  
V
IN  
+IN  
VC  
SNK  
0V  
R
CS  
ISNK  
1Ω  
I
ISRC  
OUT  
2V  
1/4W  
TSD  
+
OUT  
LT1970  
SENSE  
SENSE  
LOAD  
V
R1  
10k  
–IN  
V
EE  
COMMON  
VCSRC = 4V  
VCSNK = 2V  
RCS = 1Ω  
20µs/DIV  
1970 TA02  
R2  
10k  
–15V  
1970 TA01  
1970f  
1

LT1970CFE 替代型号

型号 品牌 替代类型 描述 数据表
LT1970IFE Linear

完全替代

500mA Power Op Amp with Adjustable Precision Current Limit

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