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參數(shù)資料
| 型號： | LTC6652AHMS8-2.5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 260K |
| 代理商： | LTC6652AHMS8-2.5 |
LTC6652
9
6652f
APPLICATIONS INFORMATION
Figure 12. Long Term Drift
Hysteresis
The hysteresis data shown in Figure 13 represents the
worst-case data collected on parts from –40°C to 125°C.
The output is capable of dissipating relatively high power,
i.e., for the LT6652-2.5, PD = 10.7V 5.5mA = 58.85mW.
The thermal resistance of the MS8 package is 200°C/W and
this dissipation causes a 11.8°C internal rise. This could
increase the junction temperature above 125°C and may
cause the output to shift due to thermal hysteresis.
PC Board Layout
The mechanical stress of soldering a surface mount volt-
age reference to a PC board can cause the output voltage
to shift and temperature coefcient to change. These two
changes are not correlated. For example, the voltage may
shift, but the temperature coefcient may not.
To reduce the effects of stress-related shifts, mount the
reference near the short edge of the PC board or in a
corner. In addition, slots can be cut into the board on two
sides of the device.
Figure 13. Hysteresis Plot –40°C to 125°C
The capacitors should be mounted close to the package.
The GND and VOUT traces should be as short as possible
to minimize I R drops. Excessive trace resistance directly
impacts load regulation.
Power Dissipation
Power dissipation in the LTC6652 is dependent on VIN,
load current, and package. The LTC6652 package has
a thermal resistance, or
θJA, of 200°C/W. A curve that
illustrates allowed power dissipation vs temperature for
this package is shown in Figure 14.
The power dissipation of the LTC6652-2.5V as a function
of input voltage is shown in Figure 15. The top curve
shows power dissipation with a 5mA load and the bottom
curve shows power dissipation with no load.
When operated within its specied limits of VIN = 13.2V
and sourcing 5mA, the LTC6652-2.5 consumes just under
60mW at room temperature. At 125°C the quiescent cur-
rent will be slightly higher and the power consumption
increases to just over 60mW. The power-derating curve
in Figure 14 shows the LTC6652-2.5 can safely dissipate
125mW at 125°C about half the maximum power con-
sumption of the package.
HOURS
0
ppm
60
80
100
600
6652 F12
40
–20
20
200
400
800
1000
–40
0
LTC6652-2.5 MS8 PACKAGE
3 TYPICAL PARTS
TA = 33°C
DISTRIBUTION (ppm)
–250
–150
–50
0
NUMBER
OF
UNITS
5
10
15
35
25
6652 F13
30
20
150
50
125°C TO 25°C
–40°C TO 25°C
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參數(shù)描述 |
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| LTC6652AHMS8-3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision Low Drift Low Noise Buffered Reference |
| LTC6652AHMS8-3#PBF | 功能描述:IC VREF SERIES PREC 3V 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 基準(zhǔn)類型:旁路，可調(diào)節(jié)，精度 輸出電壓:1.24 V ~ 16 V 容差:±0.5% 溫度系數(shù):- 輸入電壓:1.24 V ~ 16 V 通道數(shù):1 電流 - 陰極:100µA 電流 - 靜態(tài):- 電流 - 輸出:20mA 工作溫度:-40°C ~ 85°C 安裝類型:通孔 封裝/外殼:TO-226-3、TO-92-3（TO-226AA）成形引線 供應(yīng)商設(shè)備封裝:TO-92-3 包裝:帶卷 (TR) |
| LTC6652AHMS8-3#TRPBF | 功能描述:IC VREF SERIES PREC 3V 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 基準(zhǔn)類型:旁路，可調(diào)節(jié)，精度 輸出電壓:1.24 V ~ 16 V 容差:±0.5% 溫度系數(shù):- 輸入電壓:1.24 V ~ 16 V 通道數(shù):1 電流 - 陰極:100µA 電流 - 靜態(tài):- 電流 - 輸出:20mA 工作溫度:-40°C ~ 85°C 安裝類型:通孔 封裝/外殼:TO-226-3、TO-92-3（TO-226AA）成形引線 供應(yīng)商設(shè)備封裝:TO-92-3 包裝:帶卷 (TR) |
| LTC6652AHMS8-3.3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision Low Drift Low Noise Buffered Reference |
| LTC6652AHMS8-3.3#PBF | 功能描述:IC VREF SERIES PREC 3.3V 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 基準(zhǔn)類型:旁路，精度 輸出電壓:3V 容差:±0.5% 溫度系數(shù):100ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:82µA 電流 - 靜態(tài):- 電流 - 輸出:15mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-TSSOP（5 引線），SC-88A，SOT-353 供應(yīng)商設(shè)備封裝:SC-70-5 包裝:帶卷 (TR) 其它名稱:296-20888-2 |
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