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參數(shù)資料
| 型號(hào)： | LX13088CLD |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, DFN-10 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大?。?/td> | 422K |
| 代理商： | LX13088CLD |
LX13088
PRODUCTION DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
Copyright
2010
Rev. 1.1, 2010-06-08
Dual 1A Step-Down Converters
TM
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11
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88
ELECTRI CAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the operating ambient temperature of 00C < Temp <700C, and the following
test conditions: 4.5 ≤ VVIN ≤ 5 .5V, VPGND = VAGND ; E/S = High (Static)
Parameter
Symbol
Test Conditions / Comment
Min
Typ
Max
Units
Upper FET On Resistance
RDSSW2-U
TJ = 80°C
240
m
TJ = 25°C
250
Lower FET On Resistance
RDSSW2-L
TJ = 80°C
155
TJ = 25°C
150
Soft Start Time
tSS_FB2
0.5
1
2
ms
POR Threshold FB2
VFB2-POR
FB2 Falling (hysteresis = 2% VFB2)
87
90
92
%VFB2
Discharge Complete
Threshold
VFB2-DCT
FB2 level where discharge cycle is
terminated
50
75
100
mV
E/S
E/S Threshold
VE/S - H
1.5
V
VE/S - L
0.6
V
E/S Leakage Current
I E/S
0 < V E/S < VVIN
-100
100
nA
Frequency lock in range
FE/S - MIN
Switching frequency is E/S frequency
when externally clocked.
1.5
MHz
FE/S -MAX
3.0
Shutdown delay
tE/S-SHDN
Shutdown initiated if logic low is of longer
duration than delay.
2
4
10
s
POR
POR Assert Delay Time
tPOR_DELAY
Fault Flag set to POR pull low
25
s
POR Release Delay Time
tPOR_HOLD
Fault Flag reset to POR Hi-Z state
10
20
30
ms
POR Low Voltage
VPOR_LOW
POR sinking 4mA
200
300
mV
POR High Leakage
IPOR_HI
POR High Level
0.003
1
A
Power Up Sequencing
VO2 Start Threshold
VFB1-ST
FB1 rising voltage for FB2 to initiate soft start
87
90
92
%VFB1
Brown Out Discharge
SW1, SW2 Discharge
Resistance
RSTOP-
SW1,2
Discharge Resistance for SW1 and VO2
15
30
45
SW1, SW2 Discharge
Resistance matching
RSTOP-SW1
/ RSTOP-
SW2
0.90
1
1.1
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