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参数资料
| 型号： | LX2750CLQ |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PQCC16 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, MLPQ-10 |
| 文件页数： | 5/11页 |
| 文件大小： | 388K |
| 代理商： | LX2750CLQ |
LX2750
Microsemi
Analog Mixed Signal Group
3
Rev. 1.0a
07/14/10
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
N
PARAMET ER
SYM
Test Condition
Min
TYP
MAX
Units
VIN UVLO
Vin-Threshold
Vin_UVLO
Vin Rising
9
V
Vin-Hysteresis
Vin_Hyst
Vin Falling
8
V
5V REG
5VREG Output
No switching
5.4
V
5VREG Max Current
30
50
mA
SS
Tss_pwm
FS=350kHz,MODE=5V
5.2
mS
Tss_con
FS=350kHz,MODE=0V
1.3
mS
Oscillator (Rt)
Frequency
F S
Rt=110k,MODE=5V
245
300
359
kHz
Ramp-feedforward gain
VRAMP
0.1
V/V
Ramp Offset
1
V
Max Duty Cycle
FS=300kHz
80
%
Min Off Time
560
nS
Min Controlable On T ime
200
nS
Rt Disable threshold
0.3
V
Error Amplifiers
Open Loop Gain (Note1)
80
dB
Gain Bandwidth (Note1)
10
MHz
Input Bias Current
Ib
1
100
nA
Max Sourcing Current
FB=0.7V, comp>=3V
3
mA
Max Sinking Current
FB=0.9V,com p<=0.3V
0.4
mA
COMP High Voltage
FB=0.7V, source 80uA
4.4
V
COMP Low Voltage
FB=0.9V, sink 40uA
0.1
V
SW zero cross comparator
Offset voltage
-2
mV
High Side Driver
Output Impedance , Sourcing
Current (Note1)
Rsource(Hdrv) BST to SW=5V,
I=200mA
1
ohm
Output Impedance , Sinking
Current (Note1)
Rsink(Hdrv) BST to SW=5V,
I=200mA
0.8
ohm
Low Side Driver
Output Impedance, Sourcing
Current (Note1)
R
source(Ldrv) PVCC =12V
6
ohm
Output Impedance, Sinking
Current (Note1)
R
sink(Ld rv)
PVCC=12V
2
ohm
MODE,FCCM thresho ld
High T hreshold
2
V
Low Threshold
0.8
V
Internal Scho ttky Diode
Forward voltage drop
Forward current=20mA
450
mV
Power Good
T hreshold Voltage as % of Vref
FB ram ping up
85
%
Hysteresis
5
%
FBUVLO
Feedback UVLO threshold
percent of nom inal
60
%
Soft Start time
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