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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(yè)數(shù)： | 6/12頁(yè) |
| 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 3
WWW
.Microse
m
i
.CO
M
High Frequency Step Down Regulator
I N T E GR A T ED
PRODUCT S
Copyright
2000
Rev. 0.9a, 2004-04-16
ELECTRICAL CHA RACTERISTICS
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0
°C
≤ T
A ≤ 70°C except where
otherwise noted and the following test conditions: VIN = 3.6V. Typical values are at TA = 25°C
LX1910
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
ENTIRE REGULATOR
Input Voltage
VIN
2.7
6.0
V
Output Voltage Range
VOUT
VIN = 5V
VFBT
4
V
Feedback Threshold
VFBT
1.146
1.170
1.193
V
VFB = VFBT + 125mV (Pin 2 Supply Current)
250
400
Quiescent Current
IQ
VSHDN = GND
1
A
SHDN Input Bias Current
ISHDN
-100
100
nA
(Device Off)
IN
V
2
.
0
SHDN Voltage Threshold
VSHDN
(Device On)
IN
V
8
.
0
V
0.6
1.07
1.325
Oscillator Frequency
fOSC
VIN = 5V
0.8
1.07
1.325
MHz
Oscillator Ramp Voltage
VOSC
3.3
V
Load Regulation
VOUT(IOUT)
0.5
%
Line Regulation
VFBT(VIN)
0.04
0.4
%
Thermal Shutdown
TSHDN
125
150
°C
ERROR AMPLIFIER
Error Amplifier Gain
gm
300
A/V
FB Input Bias Current
IFB
VFB = 1.2V
300
550
nA
VFB = VFBT + 125mV
10
13
Error Amplifier Output Drive Current
ICOMP
VFB = VFBT - 125mV
-8.75
-13
A
ICOMP = -10A
95
mV
Error Amplifier Output Voltage
VCOMP
ICOMP = 10A, VIN = 5V
4.86
V
POWER P-CHANNEL MOSFET
On Resistance
RDS(ON)
ISW = 0.5A, TA = 25°C, VIN = 5V
0.4
0.5
SW Pin Leakage Current
ISW(LEAK)
TA = 25°C
0.01
1
A
Maximum Duty Cycle
DC
ISW = 0.5A
80
%
Current Limit
ISW(MAX)
800
925
mA
EE
LL
EE
CC
TT
RR
IICC
AA
LL
SS
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