- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383289 > LT1313 (Linear Technology Corporation) Dual PCMCIA VPP Driver/Regulator PDF資料下載
參數(shù)資料
| 型號： | LT1313 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual PCMCIA VPP Driver/Regulator |
| 中文描述： | 雙的PCMCIA在線交流驅(qū)動器/穩(wěn)壓器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 252K |
| 代理商： | LT1313 |
7
LT1313
Calculating Junction Temperature
Example: given an output voltage of 12V, an input supply
voltage of 14V, and an output current of 100mA (one VPP
output), and a maximum ambient temperature of 50
°
C,
what will the maximum junction temperature be
Power dissipated by the device will be equal to:
I
OUT
×
(V
S
– VPP
OUT
) + (I
GND
×
V
IN
)
where,
I
OUT
= 100mA
V
IN
= 14V
I
GND
at (I
OUT
= 100mA, V
IN
= 14V) = 5mA
so,
P
D
= 100mA
×
(14V –12V) + (5mA
×
15V) = 0.275W
Using Table 1, the thermal resistance will be in the range
of 120
°
C/W to 131
°
C/W depending upon the copper area.
So the junction temperature rise above ambient will be
less than or equal to:
0.275W
×
131
°
C/W = 36
°
C
The maximum junction temperature will then be equal to
the junction temperature rise above ambient plus the
maximum ambient temperature or:
T
JMAX
= 50
°
C + 36
°
C = 86
°
C
For more detailed applications nformation, see he LT1312
Single PCMCIA VPP Driver/Regulator data sheet.
The fall time from 12V to 0V is set by the output capacitor
and an internal pull-down current source which sinks
about 30mA. This source will fully discharge a 1
μ
F capaci-
tor in less than 1ms.
Thermal Considerations
Power dissipated by the device is the sum of two compo-
nents: output current multiplied by the input-output differ-
ential voltage: I
OUT
×
(V
IN
– V
OUT
), and ground pin current
multiplied by supply voltage: (I
GND
×
V
IN
).
The ground pin current can be found by examining the
Ground Pin Current curves in the Typical Performance
Characteristics section.
Heat sinking, for surface mounted devices, is accom-
plished by using the heat spreading capabilities of the PC
board and its copper traces.
The junction temperature of the LT1313 must be limited to
125
°
C to ensure proper operation. Use Table 1, in con-
junction with the typical performance graphs, to calculate
the power dissipation and die temperature for a particular
application and ensure that the die temperature does not
exceed 125
°
C under any operating conditions.
Table 1. 16-Pin SO Package*
COPPER AREA
TOPSIDE
BACKSIDE
BOARD AREA
2500 sq mm
2500 sq mm
2500 sq mm
1000 sq mm
2500 sq mm
2500 sq mm
225 sq mm
2500 sq mm
2500 sq mm
1000 sq mm
1000 sq mm
1000 sq mm
THERMAL RESISTANCE
(JUNCTION-TO-AMBIENT)
120
°
C/W
120
°
C/W
125
°
C/W
131
°
C/W
* Device is mounted on topside.
APPLICATIO
S I
FOR
ATIO
U
W
U
U
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1354CN8 | 12MHz, 400V/us Op Amp |
| LT1354CS8 | 12MHz, 400V/us Op Amp |
| LT1354 | Octal Buffers And Line Drivers With 3-State Outputs 20-SOIC 0 to 70 |
| LT1528CQ | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LT1528 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1313CS | 功能描述:IC DRV/REG PCMCIA VPP DUAL16SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:控制器，DSP 輸入電壓:4.5 V ~ 25 V 輸出數(shù):2 輸出電壓:最低可調(diào)至 1.2V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:30-TFSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:30-TSSOP 包裝:帶卷 (TR) |
| LT1313CS#PBF | 功能描述:IC DRV/REG PCMCIA VPP DL 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| LT1313CS#TR | 功能描述:IC DRIVER/REG VPP PCMCIA 16SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件 |
| LT1313CS#TRPBF | 功能描述:IC DRV/REG PCMCIA VPP DL 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| LT1316 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。