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參數(shù)資料
| 型號： | LT6550IMS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3.3V Triple and Quad Video Amplifiers |
| 中文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO10 |
| 封裝： | 3 X 5 MM, PLASTIC, MSOP-10 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大小： | 514K |
| 代理商： | LT6550IMS |
LT6550/LT6551
12
65501f
Power Dissipation
The LT6550/LT6551, enhanced
θ
JA
MS package, has
Pin5 (V
EE
for the LT6550 and GND for the LT6551) fused
to the lead frame. This thermal connection increases the
efficiency of the PC board as a heat sink. The PCB material
can be very effective at transmitting heat between the pad
area attached to Pin 5 and a ground or power plane layer.
Copper board stiffeners and plated through holes can also
be used to spread the heat generated by the device. Table1
lists the thermal resistance for several different board
sizes and copper areas. All measurements were taken on
3/32” FR-4 board with 2oz copper. This data can be used
as a rough guideline in estimating thermal resistance. The
thermal resistance for each application will be affected by
thermal interactions with other components as well as
board size and shape.
Table 1. Fused 10-Lead MSOP Package
COPPER AREA
TOPSIDE*
BACKSIDE
(mm2)
(mm2)
540
540
100
100
100
0
30
0
0
0
*Device is mounted on topside.
BOARD AREA
(mm2)
2500
2500
2500
2500
2500
THERMAL RESISTANCE
(JUNTION-TO-AMBIENT)
110
°
C/W
120
°
C/W
130
°
C/W
135
°
C/W
140
°
C/W
As an example, calculate the junction temperature for the
circuit in Figure 2 assuming an 85
°
C ambient temperature.
The device dissipation can be found by measuring the
supply current, calculating the total dissipation and then
subtracting the dissipation in the load.
The dissipation for the amplifiers is:
P
D
= (106mA)(5V) –4 (2.5V)
2
/150 = 363mW
The total package power dissipation is 363mW. When a
2500 sq mm PC board with 540 sq mm of 2oz copper on
top and bottom is used, the thermal resistance is
110
°
C/W. The junction temperature (T
J
) is:
T
J
= (363mW)(110
°
C/W) + 85
°
C = 125
°
C
The maximum junction temperature for the LT6551 is
150
°
C so the heat sinking capability of the board is
adequate for the application.
Figure 2. Calculating Junction Temperature
+
–
5V
1.25V
OA
450
450
+
–
OA
450
450
+
–
OA
450
450
+
–
GND
OA
450
450
75
75
75
75
75
75
75
75
LT6551
6551 F02
APPLICATIU
W
U
U
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| LT6550IMS#PBF | 功能描述:IC AMP VIDEO TRIPLE 3.3V 10-MSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| LT6550IMS#TR | 功能描述:IC AMP VIDEO TRIPLE 3.3V 10MSOP RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| LT6550IMS#TRPBF | 功能描述:IC AMP VIDEO TRIPLE 3.3V 10-MSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| LT6551 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:3.3V Triple and Quad Video Amplifiers |
| LT6551CMS | 功能描述:IC AMP VIDEO QUAD 3.3V 10-MSOP RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
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