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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： | 3/8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 3
Copyright
2004
Rev. 1.1, 2005-02-25
WWW
.Microse
m
i
.CO
M
LX1910
Step-Down Regulator
PRODUCTION DATA SHEET
TM
ELECTRI CAL CHA RACTERI S TI CS
Specifications apply over junction temperature of: 0oC < T < 85oC for VIN = 5V (except where otherwise noted). Typical values are at TA=25°C.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Operating Range
VIN
Functional operation guaranteed by design
3.5
6.0
V
Output Voltage Range
VOUT
Closed loop operating range
VFB
0.95*VIN
V
Feed Back Threshold
VFBT
4V < VIN < 6V
1.146
1.170
1.193
V
FB Input Current
IFB
VFB = 1.2V
300
500
nA
ISOURCE
VFB -125mV of Overdrive, VCOMP = 2.5V
10
16
A
EA Drive Current (COMP Pin)
ISINK
VFB +125mV of Overdrive, VCOMP = 2.5V
10
16
A
VOL, Sinking 10A
95
mV
EA Output Swing (COMP Pin)
VEA OUT
VOH, Sourcing 10A
4.86
V
Quiescent Operating Current
IQ
Pin 2 Supply Current
250
400
A
IQVINSD
VSHDN = 0V, SW Pin open
1
A
Sleep (Shutdown Mode) Current
IQVINSD
VSHDN = 0V, SW grounded
2
5
A
Shutdown Input Bias Current
ISD_IB
SHDN = GND or SHDN = 5V
-100
100
nA
Device Off
0.2*VIN
V
Shutdown Voltage Threshold
VSD
Device On
0.8*VIN
V
P-Channel Switch ON Resistance
RDS(ON)
ISW = 0.5A
0.53
0.8
Maximum Duty Cycle
D
ISW = 0.5A (assured by design, not ATE tested)
80
100
%
SW Leakage Current
ILEAK
1
5
A
P-Channel Current Limit
ILIM
900
950
mA
Frequency
FOP
0.80
1.07
1.2
MHz
Closed Loop Load Regulation
Load Reg
VO = 1.5V, 5mA < IO < 700mA, ckt figure 3
0.35
0.5
% VO
Thermal Shutdown
TSD
125
150
°C
EE
LL
EE
CC
TT
RR
IICC
AA
LL
SS
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