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参数资料
| 型号： | LX3005CDM |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PDSO8 |
| 封装： | ROHS COMPLIANT, PLASTIC, SOIC-8 |
| 文件页数： | 2/3页 |
| 文件大小： | 98K |
| 代理商： | LX3005CDM |
LX3005
PRODUCTION DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 800-8776458, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright
2010
Rev.1.0, 2010-02-05
2A STEP-DOWN CONVERTER
TM
W
.M
ic
ro
s
e
m
i
.C
O
M
LL
XX
33
00
55
A B S O L U T E M A X I M U M R A T I N G S
P A C K A G E P I N O U T
Supply Input Voltage (VIN)................................................................-0.3V to 30V
FB Pin Voltage (VFB)...........................................................................-0.3V to 6V
EN Pin Voltage (VEN) ......................................................................... -0.3V to VIN
COMP Pin Voltage (VCOMP) ................................................................-0.3V to 6V
SW Pin Voltage (VSW)........................................................................ -0.3V to VIN
Power Dissipation (PD) ............................................................... Internally limited
Maximum Operating Junction Temperature.................................................150
C
Storage Temperature Range .......................................................... -65
C to 150C
Lead Temperature (Soldering, 10 seconds) ..................................................260
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.
M
S
C
3
0
5
C
D
M
x
1
2
3
4
5
6
7
8
NC
VIN
SW
GND
FB
NC
EN
COMP
DM PACKAGE
(Top View)
xxxx = date/lot code
RoHS / Pb-free 100% Matte Tin Pin Finish
F U N C T I O N A L P I N D E S C R I P T I O N
Name
Pin #
Description
NC
1
Pin not used.
VIN
2
Supply Voltage Pin. The LX3005 operates from a 4.75V to 25V DC voltage. Bypass VIN to GND
with a suitable large capacitor to eliminate noise on the input.
SW
3
Power Switch Output Pin. SW is the switch node that supplies power to the output.
GND
4
Ground for IC.
FB
5
Feedback Pin. Through an external resistor divider network, FB senses the output voltage and
regulates it. To prevent current limit run away in a short circuit fault condition, the frequency
feedback comparator lowers the oscillator frequency to 40kHz when the FB voltage is below
0.52V. The feedback threshold voltage is 0.8V.
COMP
6
Compensation Pin. This pin is the output of the error amplifier. Frequency compensation is done
at this pin by connecting a series RC to ground(parallel a capacitor if necessary)
EN
7
Enable Pin. Drive EN pin high to turn on the device, drive it low to turn off. Default of this pin is
high level.
NC
8
Pin not used.
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