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參數(shù)資料
| 型號： | LX8580A-00CDD |
| 廠商： | MICROSEMI CORP-SCOTTSDALE |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 7.5A Very Low Dropout Positive Regulator |
| 中文描述： | ADJUSTABLE POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO5 |
| 封裝： | ROHS COMPLIANT, PLASTIC, TO-263, 5 PIN |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 172K |
| 代理商： | LX8580A-00CDD |
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright
2001
Rev. 1.4, 2003-01-06
W
M
.
C
LX8580A
7.5A Very Low Dropout Positive Regulator
P
RODUCTION
D
ATA
S
HEET
I N T E G R A T E D P R O D U C T S
A B S O L U T E M A X I M U M R A T I N G S
V
CTRL
Input Voltage.........................................................................................13V
V
PWR
Input Voltage ............................................................................................7V
Power Dissipation..................................................................... Internally Limited
Operating Junction Temperature..................................................................150
°
C
Storage Temperature Range...........................................................-65
°
C to 150
°
C
Lead Temperature (Soldering 180 seconds).................................................300
°
C
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal
.
T H E R M A L D A T A
P A C K A G E P IN O U T
P P
ACKAGE
(5-P
IN
)
(Top View)
1
2
3
TAB is OUTPUT
4
5
OUTPUT
V
PWR
V
CTRL
ADJUST
SENSE
DD P
ACKAGE
(5-P
IN
)
(Top View)
1
SENSE
OUTPUT
V
PWR
V
CTRL
2
3
TAB is OUTPUT
4
5
ADJUST
DF P
ACKAGE
(Top View)
TAB is OUTPUT
1
SENSE
ADJUST
OUTPUT
V
CTRL
V
PWR
2
3
4
5
P
THERMAL RESISTANCE
-
JUNCTION TO
T
AB
,
θ
JT
THERMAL RESISTANCE
-
JUNCTION TO
A
MBIENT
,
θ
JA
Plastic TO-220 5-Pin
3.0
°
C/W
65
°
C/W
DD
THERMAL RESISTANCE
-
JUNCTION TO
T
AB
,
θ
JT
THERMAL RESISTANCE
-
JUNCTION TO
A
MBIENT
,
θ
JA
Plastic TO-263 5-Pin
3.0
°
C/W
35
°
C/W
DF
THERMAL RESISTANCE
-
JUNCTION TO
T
AB
,
θ
JT
THERMAL RESISTANCE
-
JUNCTION TO
A
MBIENT
,
θ
JA
Plastic S-Pack 5-Pin
3.0°C/W
35°C/W
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x
θ
JA
).
θ
JA
assume device is mounted
on a 0.5 inch
2
copper pad. The
θ
JA
numbers are guidelines for the thermal performance of
the device/pc-board system. All of the above assume no ambient airflow.
F U N C T I O N A L P I N D E S C R I P T I O N
P
IN
N
AME
D
ES CRIPT ION
1
SENSE
This pin is the positive side of the reference voltage for the device. With this pin it is possible to
Kelvin-sense the output voltage at the load.
This pin is the negative side of the reference voltage for the device. Ripple rejection can be
improved by adding a small bypass capacitor from the ADJUST pin to ground. The capacitor value
should be selected so that:
where F
R
is the ripple frequency and R
1
is the value of the resistor between the ADJUST and
SENSE leads of the LX8580A
This is the regulated power output of the device
This pin is the voltage supply pin for the control circuitry of the device. The current flow into this pin
will be about 1% of the output current. Please refer to the electrical characteristics section of
the data sheet for dropout voltage for load conditions.
This is the collector of the power section of the LX8580A. The output load current is supplied
through this pin. For the device to regulate, the voltage at this pin must be between 0.1V and 0.8V
greater than the output voltage (Higher output current require higher voltages differences between
V
PWR
and OUTPUT).
2
ADJUST
3
OUTPUT
4
V
CTRL
5
V
PWR
P
A
C
K
A
G
E
D
A
T
A
1
R
R
R
F
2
1
C
π
≤
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