參數(shù)資料
型號(hào)： LX1668CDWT
廠商： MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類： 穩(wěn)壓器
英文描述： Analog IC
中文描述： 1 A SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO20
封裝： PLASTIC, SOWB-20
文件頁(yè)數(shù)： 2/15頁(yè)
文件大?。?/td> 371K
代理商： LX1668CDWT
P
ROGRAMMABLE
M
ULTIPLE
O
UTPUT
DC:DC C
ONTROLLER
LX1668
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
Copyright 1999
Rev. 1.0 4/99
2
P
R O D U C T I O N
D
A T A
S
H E E T
12V Supply Voltage (V
CC12
) .................................................................................. 18V
5V Supply Voltage (V
) .......................................................................................7V
Supply Voltage (Internal LDO)/(V
)...................................................................7V
Output Drive Peak Current Source (500ns).......................................................1.0A
Output Drive Peak Current Sink (500ns)........................................................... 1.0A
Input Voltage (SS, VID[0:4]) ................................................................... -0.3V to 6V
Operating Junction Temperature .................................................................... 150°C
Storage Temperature Range ........................................................... -65°C to +150°C
Lead Temperature (Soldering, 10 Seconds).................................................... 300°C
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified
terminal.
Note 2. V
supply is used as input to internal low dropout regulator. Voltages above
3.3V will cause increased thermal dissipation in the package. Power dissipation
should be limited to keep junction temperature below maximum rating.
DW PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θ
JA
PW PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θ
JA
85°C/W
110°C/W
Junction Temperature Calculation: T
= T
+ (P
x
θ
).
The
θ
numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
THERMAL DATA
ABSOLUTE MAXIMUM RATINGS
(Note 1 & 2)
PACKAGE PIN OUTS
PW PACKAGE — 20-Pin
(Top View)
PGND
BDRV
AGND
SS/ENABLE
V
FB
V
CORE
PWRGD
OVP
VID4
VID3
1
2
20
19
3
18
4
17
5
16
6
7
15
14
8
13
9
12
10
11
TDRV
V
CC12
V
CC5
V
OUT2
V
CC3
L
DRV
L
FB
VID0
VID1
VID2
TDRV
V
CC12
V
CC5
V
OUT2
V
CC3
L
DRV
L
FB
VID0
VID1
VID2
PGND
BDRV
AGND
SS/ENABLE
V
FB
V
CORE
PWRGD
OVP
VID4
VID3
DW PACKAGE — 20-Pin
(Top View)
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
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