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参数资料
| 型号： | LX1910-CDU |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件页数： | 1/8页 |
| 文件大小： | 239K |
| 代理商： | LX1910-CDU |
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2004
Rev. 1.1, 2005-02-25
WWW
.Microse
m
i
.CO
M
LX1910
Step-Down Regulator
PRODUCTION DATA SHEET
TM
DESCRI PTI O N
The LX1910 PWM buck regulator
achieves very high efficiencies over a
broad range of operating load
conditions. The LX1910 implements
a load-detection architecture and
enters a power-saving PFM mode
when driving small load currents
ensuring optimal regulator efficiency
over the entire output current range
thus maximizing battery life.
The
PWM
operating
mode
implements a fixed frequency of
1MHz (typ), the transconductance
error amplifier has 12A of drive
with an output voltage swing rail to
rail. Compensation is external for
maximum user flexibility.
The LX1910 does not require a
minimum load current for stable
operation. There is no Under Voltage
Lockout
for
the
input
voltage,
operational range includes 4V to 6V.
The regulator is capable of providing
an output dc load current of 850mA.
The SHDN pin places the device in a
sleep-mode drawing less than 1A of
quiescent current.
The LX1910 comes in space-saving
MSOP package allowing a complete
application circuit to occupy a very
small PCB area. These features make
the
LX1910
ideal
for
use
in
SmartPhones, PDAs, or other battery-
operated devices
IMPORTANT:
For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATUR ES
Internal Reference 1.17V
±2% Accuracy (Line and
Temperature)
4V to 6.0V Input Range
Adj. Output From 1.17V to VIN
Output Current (IDC >850mA)
Quiescent Current < 300
A
1MHz Operation Frequency
MSOP 8-Pin
APPLICATIONS/BENEFITS
Portable Microprocessor Core
Voltage Supplies
5V to 3V
PRODUCT H I GHLIGHT
PVIN
AVIN
SHDN
COMP
AGND
PGND
FB
SW
C
IN
R
C
D
C
X
R
1
R
2
L
C
OUT
V
OUT
V
IN
LX1910
LX1910 Efficiency @ Vout=1.5V
10%
20%
30%
40%
50%
60%
70%
80%
90%
0
100
200
300
400
500
600
700
OUTPUT CURRENT, mA
C
O
NV
ERSION
EFF
IC
IENC
Y
Figure 1 – LX1910 Circuit Topology and Typical Efficiency Performance
PACKAGE ORDER INFO
DU
Plastic MSOP
8-PIN
TJ(
°C)
Input
Voltage
Output
Voltage Range
RoHS Compliant / Pb-free
0 to 85
4.5V – 6.0V
1.17V to VIN
LX1910CDU
Note: Available in Tape & Reel. Append the letters “TR” to the part number.
(i.e. LX1910-13016CDU-TR)
LL
XX
11
99
11
00
相关PDF资料 |
PDF描述 |
|---|---|
| LX1910CDU-TR | 1 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| LX3005CDM | SWITCHING REGULATOR, PDSO8 |
| LX3005CDM-TR | SWITCHING REGULATOR, PDSO8 |
| LX3055 | FIBER OPTIC PHOTODIODE DETECTOR, 1310-1550nm, 3125Mbps, SURFACE MOUNT |
| LX3055 | FIBER OPTIC PHOTODIODE DETECTOR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LX1911 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:1.5A, 1.1MHZ PWM Step-Down Regulator |
| LX1911CLD | 制造商:Microsemi Corporation 功能描述:DC:DC CONVERTER - Bulk |
| LX1912 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:VREF @ 800mV, 1.0A, 1.2MHz PWM Current Mode PWM Buck regulator |
| LX1912 EVAL KIT | 制造商:Microsemi Corporation 功能描述:DC:DC CONVERTER - Bulk |
| LX1912CSG | 制造商:Microsemi Corporation 功能描述:PWM CONTROLLERS - Bulk |
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