參數(shù)資料
型號(hào)： LX1732
廠商： Microsemi Corporation
英文描述： High Current PFM Boost Converter
中文描述： 烤瓷高電流升壓轉(zhuǎn)換器
文件頁(yè)數(shù)： 3/12頁(yè)
文件大?。?/td> 322K
代理商： LX1732
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
Copyright
2000
Rev. 1.1c, 2005-03-03
W
M
.
C
LX1732
High Current PFM Boost Converter
P
RODUCTION
D
ATA
S
HEET
I N T E G R A T E D P R O D U C T S
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
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:
V
IN
= 2V, V
OUT
= 3.3V, R
LOAD
= 3k
,
V
SHDN
= 2V
LX1732
Typ
Parameter
Symbol
Test Conditions
Min
Max
Units
`
PFM Regulator
Operating Voltage
Minimum Operating Voltage
Minimum Start-up Voltage
Start-up Voltage Temperature
Coefficient
Output Voltage Range
V
IN
V
IN
I
OUT
1mA
T
A
= +25
°
C; I
OUT
< 10mA
1.1
5.5
1.1
V
V
V
0.7
κ
SU
V
OUT
-2
mV/
°
C
V
V
OUT
= 3.3V: GBNT
V
OUT
= 5V: GBNT
I
LX
= 100mA
V
LX
= 5.5V, V
OUT
= 5V
V
FB
= 1V; T
A
= +25
°
C
V
FB
= 1V; T
A
= +25
°
C
(into VC pin)
T
A
= +25
°
C
V
FB
= 1.4V
SHDN
= GND
2.2
250
100
0.47
65
65
1.170
5.5
1.0
1.0
1.0
135
85
200
1.230
300
100
Steady State Output Current
I
OUT
mA
Internal N-FET On-resistance
Switch Current Limit
Switch Pin Leakage Current
Oscillator Frequency
Duty Cycle
Operating Current
Error Amplifier
Voltage Feed Back Threshold
Voltage Feed Back Input Current
Shutdown Circuit
SHDN
Input Bias Current
R
DS(ON)
I
SW
I
LEAK
f
OSC
D
I
Q
V
FB
I
FB
I
SHDN
0.2
100
75
1.200
A
μ
A
kHz
%
μ
A
V
nA
nA
`
`
SHDN
High Input Voltage
V
SHDN
V
IN
/2
V
SHDN
Low Input Voltage
Shutdown Operating Current
Low Battery Detect
Low Battery Detect Output
Voltage
Low Battery Detect Output
Leakage Current
Low Battery Threshold
Hysteresis
V
SHDN
I
Q
SHDN
= GND
0.4
1
V
μ
A
`
V
LBO
V
LBI
= 0V, I
LBO
= -1mA
0.5
V
I
LBO
V
LBT
V
HLBT
V
LBI
= V
IN
, V
LBO
= 5V
T
A
= +25
°
C
1
μ
A
V
0.54
0.71
80
E
L
E
C
T
R
I
C
A
L
S
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