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參數(shù)資料
| 型號： | LX8817-25CDF |
| 英文描述： | Low Drop Out Regulator - Dual |
| 中文描述： | 低壓差穩(wěn)壓器-雙 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 217K |
| 代理商： | LX8817-25CDF |
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright
2000
Rev. 0.3D, 2002-01-08
W
M
.
C
LX8817
Dual Channel 2.5A Low Dropout Regulator
P
RODUCTION
D
ATA
S
HEET
L I N F I N I T Y D I V I S I O N
A B S O L U T E M A X I M U M R A T I N G S
Input Voltage (V
CTRL
, V
PWR
) ........................................................................13.5V
Load Current (Internally Limited)..................................................................3.0A
Power Dissipation......................................................................Internally Limited
Short-Circuit Protection...........................................................................Indefinite
Operating Junction Temperature..................................................................150
°
C
Storage Temperature Range .......................................................... -65
°
C to 150
°
C
Lead Temperature (Soldering 180 seconds).................................................235
°
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
.
P A C K A G E P IN O U T
DF P
ACKAGE
(Top View)
1
V
CTRL
V
OUT1
V
PWR
GND
V
OUT2
2
3
4
5
TAB is GND
ADJ
V2
6
NC
7
T H E R M A L D A T A
DF
THERMAL RESISTANCE
-
JUNCTION TO
T
AB
,
θ
JT
THERMAL RESISTANCE
-
JUNCTION TO
A
MBIENT
,
θ
JA
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x
θ
JA
).
The
θ
JA
numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
θ
JA
can vary significantly depending
on mounting technique. (See Application Notes Section: Thermal considerations)
Plastic S-PAK 7-PIN
4.5
°
C/W
30
°
C/W
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
2
V
CTRL
V
OUT1
Unregulated input voltage supply, provides bias for control circuitry, (V
CTRL
– V
OUT
) > 1V.
Regulator #1 fixed output voltage.
Unregulated input voltage supply for power section. For proper operation: (V
PWR
– V
OUT
) >
V
DROPOUT
.
Common terminal for ground reference, Tab of package is internally connected to this pin.
Regulator #2 adjustable output.
Regulator #2 voltage feedback. Sets the output voltage for regulator #2 via an external resistor
divider.
Not used.
3
V
PWR
4
5
GND
V
OUT2
6
ADJ
V2
7
NC
P
A
C
K
A
G
E
D
A
T
A
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