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參數(shù)資料
| 型號： | CS52015-1GSTR3 |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | POT 50 OHM 3/8 SQ CERM SL ST |
| 中文描述： | 1.5A的可調(diào)線性穩(wěn)壓器 |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 173K |
| 代理商： | CS52015-1GSTR3 |
6
C
Figure 3. Protection diode scheme for Large Output Capacitors.
Since the CS52015-1 is a three terminal regulator, it is not
possible to provide true remote load sensing. Load regula-
tion is limited by the resistance of the conductors connect-
ing the regulator to the load.
For the adjustable regulator, the best load regulation occurs
when R1 is connected directly to the output pin of the regu-
lator as shown in Figure 3. If R1 is connected to the load,
R
C
is multiplied by the divider ratio and the effective resis-
tance between the regulator and the load becomes
R
C
′
(
)
R
C
= conductor parasitic resistance
Figure 4. Grounding scheme for the adjustable output regulator to mini-
mize parasitic resistance effects.
The CS52015-1 linear regulator includes thermal shutdown
and current limit circuitry to protect the device. High
power regulators such as these usually operate at high
junction temperatures so it is important to calculate the
power dissipation and junction temperatures accurately to
ensure that an adequate heat sink is used.
The case is connected to V
OUT
on the CS52015-1, and elec-
trical isolation may be required for some applications.
Thermal compound should always be used with high cur-
rent regulators such as these.
The thermal characteristics of an IC depend on the follow-
ing four factors:
1. Maximum Ambient Temperature T
A
(C)
2. Power dissipation P
D
(Watts)
3. Maximum junction temperature T
J
(C)
4. Thermal resistance junction to ambient R
Q
JA
(C/W)
These four are related by the equation
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
Q
JA
is calculated using equation (3) and the
result can be substituted in equation (1).
The value for R
JC
is 3.5C/W. For a high current regula-
tor such as the CS52015-1 the majority of the heat is gener-
ated in the power transistor section. The value for R
Q
SA
depends on the heat sink type, while R
CS
depends on fac-
tors such as package type, heat sink interface (is an insula-
tor and thermal grease used), and the contact area
between the heat sink and the package. Once these calcula-
tions are complete, the maximum permissible value of R
JA
can be calculated and the proper heat sink selected. For fur-
ther discussion on heat sink selection, see application note
òThermal Management for Linear Regulators.ó
Calculating Power Dissipation and Heat Sink Requirements
V
OUT
R
C
V
IN
conductor parasitic
resistance
CS52015-1
V
IN
Adj
R
LOAD
R
1
R
2
R1 + R2
R1
Output Voltage Sensing
V
OUT
V
IN
CS52015-1
V
IN
Adj
R
1
R
2
C
1
V
OUT
C
2
C
Adj
IN4002 (optional)
Applications Information: continued
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| CS52015-3GDPR3 | 1.5A, 3.3V Fixed Linear Regulator |
| CS52015-3GST3 | 1.5A, 3.3V Fixed Linear Regulator |
| CS52015-3GSTR3 | 1.5A, 3.3V Fixed Linear Regulator |
| CS52015-3GT3 | 1.5A, 3.3V Fixed Linear Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS52015-1GT3 | 功能描述:IC REG LDO ADJ 1.5A 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?。?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 |
| CS-52015-1ST3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Adjustable Voltage Regulator |
| CS-52015-1T3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Adjustable Voltage Regulator |
| CS52015-3 | 制造商:CHERRY 制造商全稱:CHERRY 功能描述:1.5A, 3.3V Fixed Linear Regulator |
| CS52015-3/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:1.5A， 3.3V Fixed Linear Regulator |
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