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參數(shù)資料
| 型號： | LSP3122AK12AE |
| 廠商： | LITE-ON SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PSSO5 |
| 封裝： | TO-263, 5 PIN |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 185K |
| 代理商： | LSP3122AK12AE |
Liteon Semiconductor Corporation
LSP3122A
300KHZ 5A PWM Buck DC/DC Converter
Rev1.1
3/11
ELECTRICAL CHARACTERISTICS (ALL OUTPUT VOLTAGE VERSIONS)
Unless otherwise specified, VIN=12V for 3.3V,5V, adjustable version and VIN=24V for the 12V version. ILOAD=0.5A
Symbol
Paramrter
Conditions
Min.
Typ.
Max.
Unit
IFB
Feedback bias current
VFB=1.3V(Adjustable
version only)
15
50
nA
FOSC
Oscillator frequency
255
300
345
KHz
VSAT
Saturation voltage
IOUT=5A
no
outside
circuit
VFB=0V force driver on
1.4
V
Max.Duty Cycle(ON)
VFB=0V force driver on
100
DC
Min.Duty Cycle(OFF)
VFB=12V force driver off
0
%
ICL
Current limit
Peak current
no outside circuit
VFB=0V force driver on
6.5
A
Output=0
no
outside
circuit
VFB=12V force driver off
50
A
IL
Output=-1
Output
leakage
current
VIN=40V
2
30
mA
IQ
Quiescent Current
VFB=12V force driver off
4.5
10
mA
ISTBY
Standby
Quiesient
Current
ON/OFF
Pin=5V
VIN=40V
80
200
A
VIL
Low(regultaor ON)
0.6
VIH
ON/OFF pin logic input
threshold voltage
High(regultaor OFF)
2.0
1.3
V
IH
ON/OFF pin logic input
current
VLOGIC=2.5V(OFF)
5
15
IL
ON/OFF pin
input
current
VLOGIC=0.5V(ON)
5
A
TO220-5L
2.5
θJC
Thermal Resistence
TO263-5L
Junction
to case
3.5
℃/W
TO220-5L
28
θJA
Thermal
Resistence
With copper area of
approximately 3 in
2
TO263-5L
Junction
to ambient
30
℃/W
ELECTRICAL CHARACTERISTICS (CONTINUED)
Symbol
Parameter
Conditions
Typ.
Limit
Unit
VFB
Output Feedback
5V≤VIN≤40V
0.2A≤ILOAD≤5A
VOUT programmed for 3V
1.215
1.18
1.25
V
VMIN
VMAX
LSP3122A-ADJ
η
Efficiency
VIN =12V,
ILOAD =5A
73
%
VOUT
Output voltage
5.5V≤VIN≤40V
0.2A≤ILOAD≤5A
3.3
3.20
3.40
V
VMIN
VMAX
LSP3122A-3.3V
η
Efficiency
VIN =12V,
ILOAD =5A
73
%
VOUT
Output voltage
8V≤VIN≤40V
0.2A≤ILOAD≤5A
5
4.85
5.15
V
VMIN
VMAX
LSP3122A-5V
η
Efficiency
VIN =12V,
ILOAD =5A
80
%
VOUT
Output voltage
15V≤VIN≤40V
0.2A≤ILOAD≤5A
12
11.64
12.36
V
VMIN
VMAX
LSP3122A-12V
η
Efficiency
VIN =15V,
ILOAD =5A
90
%
Specifications with boldface type are for full operating temperature range, the other type are for TJ=25
C.
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