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參數(shù)資料
| 型號(hào)： | LX1910-CDUT |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.8 A SWITCHING REGULATOR, 1325 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 602K |
| 代理商： | LX1910-CDUT |
LX1910
PRELIMINARY DATA SHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
WWW
.Microse
m
i
.CO
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High Frequency Step Down Regulator
I N T E GR A T ED
PRODUCT S
Copyright
2000
Rev. 0.9a, 2004-04-16
DESCRIPTION
The LX1910 is a voltage mode
PWM buck regulator operating at high
frequencies capable of achieving high
efficiency 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 typical fixed frequency
operation of 1MHz in order to
minimize the size of external com-
ponents.
The
transconductance
error
amplifier has 15A of drive with an
output voltage swing rail-to-rail, and
the compensation is external in order
to maximize user flexibility in the
selection of output inductance and
capacitance.
With a minimum duty cycle of 0%,
the LX1910 does not require a
minimum load current for stable
operation.
The input voltage range includes
2.7V to 6V and the regulator will
provide up to 700mA of output current
to the load.
Asserting the SHDN pin places the
device in a sleep-mode drawing less
than 1
A of quiescent current.
The LX1910 comes in the 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
2.7V to 6.0V Input Range
PWM/PFM Operation For Light
Load Efficiency
Adj. Output From 1.17V to VIN
Capable Of Supplying More
Than 700mA
Quiescent Current of 250
A
1MHz Operation Frequency
8-Pin MSOP
APPLI C ATION S
Portable Microprocessor Core
Voltage Supplies
LiIon Battery Voltage
Conversion
5V to 3.3V
3.3V to 1.8V
PRODUCT H I GHLIGHT
V
OUT
V
IN
ON OFF
LX1910
AVIN
FB
SW
PVIN
AGND PGND COMP
C
R
C
F
R
1
R
2
C
O
L
1
C
I
R
F
PACKAGE ORDER INFO
TA (°C)
DU
Plastic MSOP
8-Pin
-40 to 85
LX1910-CDU
Note: Available in Tape & Reel.
Append the letter “T” to the part number.
(i.e. LX1910-CDUT)
LL
XX
11
99
11
00
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