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參數(shù)資料
| 型號(hào)： | LX1910 |
| 廠商： | Microsemi Corporation |
| 英文描述： | Step-Down Regulator |
| 中文描述： | 降壓穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 239K |
| 代理商： | LX1910 |
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
W
M
.
C
LX1910
Step-Down Regulator
P
RODUCTION
D
ATA
S
HEET
TM
E L E C T R I C A L C H A R A C T E R I S T I C S
Specifications apply over junction temperature of: 0
o
C < T < 85
o
C for V
IN
= 5V (except where otherwise noted). Typical values are at T
A
=25
°
C.
Parameter
Symbol
V
IN
Test Conditions
Min
3.5
Typ
Max
6.0
Units
V
Operating Range
Functional operation guaranteed by design
Output Voltage Range
V
OUT
Closed loop operating range
V
FB
0.95*VIN
V
Feed Back Threshold
V
FBT
4V < V
IN
< 6V
1.146
1.170
1.193
V
FB Input Current
I
FB
V
FB
= 1.2V
300
500
nA
μ
A
I
SOURCE
V
FB
-125mV of Overdrive, V
COMP
= 2.5V
10
16
EA Drive Current (COMP Pin)
I
SINK
V
FB
+125mV of Overdrive, V
COMP
= 2.5V
10
16
μ
A
VOL, Sinking 10μA
95
mV
EA Output Swing (COMP Pin)
V
EA OUT
VOH, Sourcing 10μA
4.86
V
Quiescent Operating Current
I
Q
Pin 2 Supply Current
250
400
μ
A
IQVIN
SD
V
SHDN
= 0V, SW Pin open
1
μA
Sleep (Shutdown Mode) Current
IQVINSD
V
SHDN
= 0V, SW grounded
2
5
μA
Shutdown Input Bias Current
I
SD_IB
SHDN = GND or SHDN = 5V
-100
100
nA
Device Off
0.2*V
IN
V
Shutdown Voltage Threshold
V
SD
Device On
0.8*V
IN
V
P-Channel Switch ON Resistance
R
DS(ON)
I
SW
= 0.5A
0.53
0.8
Maximum Duty Cycle
SW Leakage Current
P-Channel Current Limit
Frequency
D
I
SW
= 0.5A (assured by design, not ATE tested)
80
900
0.80
100
1
950
1.07
%
μ
A
mA
MHz
I
LEAK
I
LIM
F
OP
5
1.2
Closed Loop Load Regulation
Load Reg
V
O
= 1.5V, 5mA < I
O
< 700mA, ckt figure 3
0.35
0.5
% V
O
Thermal Shutdown
T
SD
125
150
°C
E
L
E
C
T
R
I
C
A
L
S
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