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參數(shù)資料
| 型號： | CS5203-1 |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | 3A Adjustable Linear Regulator |
| 中文描述： | 第3A可調(diào)線性穩(wěn)壓器 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 165K |
| 代理商： | CS5203-1 |
7
T
J
= T
A
+ P
D
′
R
Q
JA
(1)
The maximum ambient temperature and the power dissi-
pation are determined by the design while the maximum
junction temperature and the thermal resistance depend
on the manufacturer and the package type.
The maximum power dissipation for a regulator is:
P
D(max)
={V
IN(max)
DV
OUT(min)
}I
OUT(max)
+V
IN(max)
I
Q
(2)
where
V
IN(max)
is the maximum input voltage,
V
OUT(min)
is the minimum output voltage,
I
OUT(max)
is the maximum output current, for the application
I
Q
is the maximum quiescent current at I
OUT
(max).
A heat sink effectively increases the surface area of the
package to improve the flow of heat away from the IC and
into the surrounding air.
Each material in the heat flow path between the IC and the
outside environment has a thermal resistance. Like series
electrical resistances, these resistances are summed to
determine R
Q
JA
, the total thermal resistance between the
junction and the surrounding air.
1. Thermal Resistance of the junction to case, R
Q
JC
(C/W)
2. Thermal Resistance of the case to Heat Sink, R
Q
CS
(C/W)
3. Thermal Resistance of the Heat Sink to the ambient air,
R
Q
SA
(C/W)
These are connected by the equation:
R
Q
JA
= R
Q
JC
+ R
Q
CS
+ R
Q
SA
(3)
The value for R
JA
is calculated using equation (3) and the
result can be substituted in equation (1).
The value for R
Q
JC
is 3.5 C/W as a single figure for a given
package type based on an average die size. For a high
current regulator such as the CS5203-1 the majority of the
heat is generated in the power transistor section. The
value for R
SA
depends on the heat sink type, while R
CS
depends on factors such as package type, heat sink inter-
face (is an insulator and thermal grease used), and the
contact area between the heat sink and the package. Once
these calculations are complete, the maximum permissible
value of R
JA
can be calculated and the proper heat sink
selected. For further discussion on heat sink selection, see
application note òThermal Management for Linear
Regulators.ó
Applications Information: continued
C
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CS5203-1GDPR3 | 3A Adjustable Linear Regulator |
| CS5203-1GT3 | 3A Adjustable Linear Regulator |
| CS5203-3GDP3 | 3A, 3.3V Fixed Linear Regulator |
| CS5203-3GDPR3 | 3A, 3.3V Fixed Linear Regulator |
| CS5203-3 | 3A, 3.3V Fixed Linear Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS5203-1/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:3A Adjustable Linear Regulator |
| CS-5203-1DP3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Adjustable Voltage Regulator |
| CS5203-1GDP3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CS5203-1GDPR3 | 功能描述:IC REG LDO ADJ 3A D2PAK-3 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式和可調(diào)式 輸出電壓:3.3V，1.25 V ~ 5.7 V 輸入電壓:4.5 V ~ 7 V 電壓 - 壓降（標(biāo)準(zhǔn)）:1.1V @ 1A 穩(wěn)壓器數(shù)量:2 電流 - 輸出:1A 電流 - 限制（最?。?1A 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-252-5，DPak（4 引線 + 接片），TO-252AD 供應(yīng)商設(shè)備封裝:PPAK 包裝:管件 其它名稱:497-3576-5 |
| CS5203-1GT3 | 功能描述:IC REG LDO ADJ 3A TO220AB RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式和可調(diào)式 輸出電壓:3.3V，1.25 V ~ 5.7 V 輸入電壓:4.5 V ~ 7 V 電壓 - 壓降（標(biāo)準(zhǔn)）:1.1V @ 1A 穩(wěn)壓器數(shù)量:2 電流 - 輸出:1A 電流 - 限制（最小）:1A 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-252-5，DPak（4 引線 + 接片），TO-252AD 供應(yīng)商設(shè)備封裝:PPAK 包裝:管件 其它名稱:497-3576-5 |
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