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参数资料
| 型号： | LSP3127SE |
| 厂商： | LITE-ON SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PDSO8 |
| 封装： | SOP-8 |
| 文件页数： | 3/8页 |
| 文件大小： | 135K |
| 代理商： | LSP3127SE |
Liteon Semiconductor Corporation
LSP3127
52KHZ 2A PWM Buck DC/DC Converter
Rev1.1
3/8
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
50
IB
Feedback bias current
VFB=1.3V(Adjustable
version only)
40
100
nA
44
52
60
FOSC
Oscillator frequency
38
66
KHz
VSAT
Saturation voltage
IOUT=2A
no outside circuit
VFB=0V force driver on
1.4
1.8
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
5.8
A
Output=0
no outside circuit
VFB=12V force driver off
2
mA
IL
Output=-1
Output
leakage
current
VIN=40V
30
mA
IQ
Quiescent Current
VFB=12V force driver off
5
10
mA
ISTBY
Standby Quiesient
Current
ON/OFF Pin=5V
VIN=40V
80
200
A
VIL
Low(regultaor ON)
0.8
VIH
ON/OFF pin logic input
threshold voltage
High(regultaor OFF)
2.4
1.4
V
IH
ON/OFF pin logic input
current
VLOGIC=2.5V(OFF)
30
IL
ON/OFF pin input
current
VLOGIC=0.5V(ON)
10
A
θJC
Thermal Resistence
SOP8-EP
Junction
to case
10
/W
θJA
Thermal Resistence
With copper area of
approximately 3 in
2
SOP8-EP
Junction
to ambient
50
/W
ELECTRICAL CHARACTERISTICS (CONTINUED)
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
1.193
1.267
Output
Feedback
VFB
4.5V ≤VIN ≤22V
0.2A ≤ILOAD ≤2A
VOUT Programmed for 3V
1.18
1.23
1.28
V
Efficiency
LSP3127-ADJ
η
VIN =12V, ILOAD= 2A
76
%
3.168
3.432
Output
Feedback
VFB
4.5V ≤VIN ≤22V
0.2A ≤ILOAD ≤2A
3.135
3.3
3.465
V
Efficiency
LSP3127-3.3V
η
VIN =12V, ILOAD= 2A
78
%
4.8
5.2
Output
Feedback
VFB
7V ≤VIN ≤22V
0.2A ≤ILOAD ≤2A
4.75
5
5.25
V
Efficiency
LSP3127-5.0V
η
VIN =12V, ILOAD= 2A
83
%
11.52
11.4
V
Output
Feedback
VFB
15V ≤VIN ≤22V
0.2A ≤ILOAD ≤2A
12.48
12
12.6
Efficiency
LSP3127-12V
η
VIN =15V, ILOAD= 2A
90
%
Specifications with boldface are for full operating temperature range, the other type are for TJ=25°C
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