- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377788 > LX1682CDM (MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP) VOLTAGE - MODE PWM CONTROLLERS PDF資料下載
參數(shù)資料
| 型號： | LX1682CDM |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | VOLTAGE - MODE PWM CONTROLLERS |
| 中文描述： | 1 A SWITCHING CONTROLLER, 230 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | ROHS COMPLIANT, PLASTIC, SOIC-8 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 125K |
| 代理商： | LX1682CDM |
D E S C R I P T I O N
K E Y F E A T U R E S
I
Fixed 200kHz Switching Frequency
I
Constant Frequency Voltage-Mode Control
Requires NO External Compensation
I
Hiccup-Mode Over-Current Protection
I
High Efficiency
I
Output Voltage Set By Resistor Divider
I
Under-Voltage Lockout
I
Soft-Start And Enable
I
Synchronous Rectification (LX1682)
I
Non-Synchronous Rectification (LX1681)
I
Small, 8-pin Surface Mount Package
The LX1681/1682 are monolithic, pulse-
width modulator controller ICs.
They are
designed to implement a flexible, low cost
buck (step-down) regulator supply with mini-
mal external components.
The LX1681 is a non-synchronous con-
troller;
the LX1682 has a synchronous driver
for higher efficiency.
The output voltage is adjustable
by
means of a resistor divider to set the voltage
between 1.25V and 4.5V.
Short-circuit current limiting can be
implemented without expensive current
sense resistors.
Current is sensed using the
voltage drop across the R
of the MOSFET
— sensing is delayed for 1μs to eliminate
MOSFET ringing errors.
Hiccup-mode fault protection
reduces
average power to the power elements during
short-circuit conditions.
Switching frequency is fixed at 200kHz
for optimal cost and space.
Under-voltage lockout and soft-start
for optimal start-up performance. The
LX1681/82 can be disabled by pulling the soft-
start pin to ground.
Small 8-pin SOIC packaging reduces
board space.
Optimized for 5V-to-3.3V or 5V-to-2.5V
conversion,
the LX1681/82 can also be used
for converting 12V to 5V, 3.3V or other
voltages with high efficiency, eliminating the
need for bulky heat sinks.
P R O D U C T H I G H L I G H T
V
OLTAGE
-M
ODE
PWM C
ONTR OLLER S
P
R O D U C T I O N
D
A T A
S
H E E T
T
H E
I
N F I N I T E
P
O W E R
O F
I
N N O V A T I O N
A P P L I C A T I O N S
I
5V to 3.3V Or Less Buck Regulators
I
FPGA Supplies
I
Microprocessor Chipset Supplies
(e.g. Camino, Whitney, etc.)
I
Rambus
RIMM
TM
Supplies
I
Hard Disk Drives
I
Computer Add-on Cards
Note: All surface-mount packages are available in Tape & Reel,
append the letter "T" to part number. (i.e. LX1681CDMT)
P A C K A G E O R D E R I N F O R M A T I O N
T
A
(°C)
0 to 70
Non-Synchronous
Synchronous
LX1681CDM
LX1682CDM
Copyright 1999
Rev. 1.0 5/99
1
11861 W
ESTERN
A
VENUE
, G
ARDEN
G
ROVE
, CA. 92841, 714-898-8121, F
AX
: 714-893-2570
L
I N
F
I N I T Y
M
I C R O E L E C T R O N I C S
I
N C
.
Plastic SOIC
8-pin
DM
LX 1681/ 1682
Output
LX1681
V
BOOST
12V
8
7
6
5
4
3
2
1
V
FB
SS
N.C.
GND
V
CC
CS
V
C1
TDRV
V
IN
5V
C
SS
V
OUT
R
SET
R
1
R
2
C
3
1μF
C
1500μFx3
Q
1
IRL3103S
D
2
MBR2545
L
1
5μH
C
2
0.1μF
1500μF
x3
LX1682
V
BOOST
12V
8
7
6
5
4
3
2
1
V
FB
SS
GND
BDRV
V
CC
CS
V
C1
TDRV
V
IN
5V
C
SS
V
OUT
R
SET
R
1
R
2
C
2
L
1
5μH
Q
1
IRL3103S
Q
2
IRL3103S
C
1
1500μFx2
C
3
1μF
0.1μF
1500μF
x3
LX1681 N
ON
-S
YNCHRONOUS
C
ONTROLLER
LX1682 S
YNCHRONOUS
C
ONTROLLER
NOTE:
For current data & package dimensions, visit our web site:
http://www.linfinity.com.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LX1681CDMT | Voltage-Mode SMPS Controller |
| LX1681IDM | PWM Controllers |
| LX1682CDMT | Voltage-Mode SMPS Controller |
| LX1682IDM | PWM Controllers |
| LX1684 | Voltage-Mode PWM Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LX1682CDMT | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Voltage-Mode SMPS Controller |
| LX1682CDM-TR | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Voltage-Mode PWM Controllers |
| LX1682IDM | 功能描述:IC REG CTRLR DIVIDER PWM 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| LX1684 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Voltage-Mode PWM Controller |
| LX1684_05 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Voltage-Mode PWM Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。