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參數(shù)資料
| 型號(hào)： | LT1970 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 500mA Power Op Amp with Adjustable Precision Current Limit |
| 中文描述： | 500mA的電源運(yùn)算放大器精密可調(diào)電流限制 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 233K |
| 代理商： | LT1970 |
1
LT1970
1970f
500mA Power Op Amp with
Adjustable Precision Current Limit
I
±
500mA Minimum Output Current
I
Independent Adjustment of Source and
Sink Current Limits
I
2% Current Limit Accuracy
I
Operates with Single or Split Supplies
I
Shutdown/Enable Control Input
I
Open Collector Status Flags:
Sink Current Limit
Source Current Limit
Thermal Shutdown
I
Fail Safe Current Limit and Thermal Shutdown
I
1.6V/
μ
s Slew Rate
I
3.6MHz Gain Bandwidth Product
I
Fast Current Limit Response: 2MHz Bandwidth
I
Specified Temperature Range: –40
°
C to 85
°
C
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Automatic Test Equipment
I
Laboratory Power Supplies
I
Motor Drivers
I
Thermoelectric Cooler Driver
A
V
= 2 Amplifier with Adjustable
±
500mA Full-Scale
Current Limit and Fault indication
Current Limited Sinewave Into 10
Load
V
CC
COMMON
V
EE
V
+
VC
SRC
V
VC
SNK
ISNK
ISRC
SENSE
SENSE
+
TSD
I
OUT
OUT
R
CS
1
1/4W
3k
+IN
15V
LT1970
–15V
15V
–IN
LOAD
R1
10k
R2
10k
1970 TA01
V
0V TO 5V
V
IN
V
10 R
CS
I
OUT(LIMIT)
=
±
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.
The circuit operates with single or split power supplies from
5V to 36V total supply voltage. In normal operation, the
input stage supplies and the output stage supplies are con-
nected (V
CC
to V
+
and V
EE
to V
–
). To reduce power dissi-
pation it is possible to power the output stage (V
+
, V
–
) from
independent, lower voltage rails. The amplifier is unity-gain
stable with a 3.6MHz gain bandwidth product and slews at
1.6V/
μ
s. The current limit circuits operate with a 2MHz re-
sponse between the VC
SRC
or VC
SNK
control inputs and
the amplifier output.
Open collector status flags signal current limit circuit
activation, as well as thermal shutdown of the amplifier. 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.
The LT1970 is packaged in a 20-lead TSSOP package with
a thermally conductive copper bottom plate to facilitate
heat sinking.
V
LOAD
4V
2V
0V
–2V
VC
SRC
= 4V
VC
SNK
= 2V
R
CS
= 1
20
μ
s/DIV
1970 TA02
DESCRIPTIOU
FEATURES
APPLICATIU
TYPICAL APPLICATIO
U
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1970_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:500mA Power Op Amp with Adjustable Precision Current Limit |
| LT1970A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:500mA Power Op Amp with Adjustable Precision Current Limit |
| LT1970ACFE#PBF | 功能描述:IC OP AMP 500MA ADJ CURR 20TSSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 |
| LT1970ACFE#TRPBF | 功能描述:IC OP AMP 500MA ADJ CURR 20TSSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 |
| LT1970AIFE#PBF | 功能描述:IC OP AMP 500MA ADJ CURR 20TSSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 |
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