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参数资料
| 型号： | AME1084DCCS |
| 厂商： | AME, Inc. |
| 英文描述： | JT 55C 55#22D SKT RECP |
| 中文描述： | 第5A低压差正电压稳压器 |
| 文件页数： | 6/16页 |
| 文件大小： | 108K |
| 代理商： | AME1084DCCS |
Analog Microelectronics, Inc.
6
AME1084
5A Low Dropout
Positive Voltage Regulator
n
Application Description
1. Output voltage adjustment
Like most regulators, the AME1084 regulates
the output by comparing the output voltage to
an internally generated reference voltage. On
the adjustable version, the V
REF
is available ex-
ternally as 1.25V between V
and ADJ. The
voltage ratio formed by R1 and R2 should be
set to conduct 10mA (minimum output load).
The output voltage is given by the following
equation:
V
OUT
= V
REF
( 1 + ) + I
ADJ
x R2
On fixed versions of AME1084, the voltage di-
vider is provided internally.
R2
R1
Figure 3
3. Current limit protection
AME1084 is protected against overload conditions.
Current protection is triggered at typical 7.5A.
4. Stability and load regulation
AME1084 requires a capacitor from V
OUT
to GND t o
provide compensation feedback to the internal gain
stage. This is to ensure stability at the output termi-
nal. Typically, a 10
μ
F tantalum or 50
μ
F aluminum
electrolytic is sufficient.
Note: It is important that the ESR for this capacitor
does not exceed 0.5
.
The output capacitor dose not have a theoretical
upper limit and increasing its value will increase
stability. C
OUT
= 100
μ
F or more is typical for high cur-
rent regulator design.
For the adjustable version, the best load regulation is
accomplished when the top of theresistor divider
(R1) is connected directly to theoutput pin of the
AME1084. When so connected, R
P
is not multiplied
by the divider ratio.
For fixed output versions, the top of R1 is internally
connected to the output. The ground pin can be con-
nected to low side of the load to eliminate ground loop
errors.
2. Thermal protection
AME1084 has thermal protection which limits
junction temperature to 150
O
C. However, de-
vice functionality is only guaranteed to a maxi-
mum junction temperature of +125
O
C.
The power dissipation and junction tempera-
ture for AME1084 in TO-220 package are given
by
P
D
= (V
IN
- V
OUT
) x I
T
JUNCTION
= T
AMBIENT
+ ( P
D
x
θ
JA
)
Note: T
JUNCTION
must not exceed 125
O
C
Figure 4
V
OUT
= V
REF
(1+R2
R1
) + I
ADJ
x R2
OUT
ADJ
IN
V
REF
I
ADJ
50
μ
A
V
IN
V
OUT
R1
R2
C
1
OUT
ADJ
IN
V
IN
R1
R2
R
L
R
Parasitic
Line Resistance
Connect
R2 to load
(Connect R1 to case)
相关PDF资料 |
PDF描述 |
|---|---|
| AME1084DCDT | Circular Connector; No. of Contacts:55; Series:MS27497; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| AME1084DCDT-3 | JT 42C 42#22 PIN RECP |
| AME1085 | Circular Connector; No. of Contacts:42; Series:MS27497; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:16-42 RoHS Compliant: No |
| AME1085ACBT | Circular Connector; No. of Contacts:42; Series:MS27497; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| AME1085ACDT | JT 6C 6#12 PIN RECP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AME1084DCDT | 制造商:AME 制造商全称:Analog Microelectronics 功能描述:5A Low Dropout Positive Voltage Regulator |
| AME1084DCDT-3 | 制造商:AME 制造商全称:Analog Microelectronics 功能描述:5A Low Dropout Positive Voltage Regulator |
| AME1085 | 制造商:AME 制造商全称:Analog Microelectronics 功能描述:3A Low Dropout Positive Voltage Regulator |
| AME1085ACBT | 制造商:AME 制造商全称:Analog Microelectronics 功能描述:3A Low Dropout Positive Voltage Regulator |
| AME1085ACDT | 制造商:AME 制造商全称:Analog Microelectronics 功能描述:3A Low Dropout Positive Voltage Regulator |
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