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参数资料
| 型号： | LSP3123T12E |
| 厂商： | LITE-ON SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, SFM5 |
| 封装： | TO-220, 5 PIN |
| 文件页数： | 5/12页 |
| 文件大小： | 642K |
| 代理商： | LSP3123T12E |
Liteon Semiconductor Corporation
LSP3123
150KHZ 3A PWM Buck DC/DC Converter
Rev1.3
2/12
ABSOLUTE MAXIMUM RATINGS
Symbol
Paramrter
Rating
Unit
VCC
Supply Voltage
+24
V
VSD
ON/OFF Pin input Voltage
-0.3 to +18
V
VFB
Feedback Pin Voltage
-0.3 to +18
V
VOUT
Output Voltage to Ground
-1
V
PD
Power Dissipation
Internally Limited
W
TST
Storage Temperature
-65 to +150
TOP
Operating Temperature
-40 to +125
VOP
Operating Voltage
+4.5 to +22
V
ELECTRICAL CHARACTERISTICS (ALL OUTPUT VOLTAGE VERSIONS)
Unless otherwise specified, VIN=12V for 3.3V,5V, adjustable version and VIN=18V 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)
-10
-100
nA
127
150
173
FOSC
Oscillator frequency
110
173
KHz
FCSP
Short Circuit Oscillator
Frequency
When Current Limit
Occur and
VFB ＜ 0.5V, TA=25°C
10
30
50
KHz
1.4
VSAT
Saturation voltage
IOUT=3A
no outside circuit
VFB=0V force driver on
1.5
V
Max.Duty Cycle(ON)
VFB=0V force driver on
100
DC
Min.Duty Cycle(OFF)
VFB=12V force driver off
0
%
3.6
6.9
ICL
Current limit
Peak current
no outside circuit
VFB=0V force driver on
3.4
7.5
A
Output=0
no outside circuit
VFB=12V force driver off
-50
A
IL
Output=-1
Output
leakage
current
VIN=22V
-30
mA
IQ
Quiescent Current
VFB=12V force driver off
5
10
mA
200
ISTBY
Standby Quiesient
Current
ON/OFF Pin=5V
VIN=22V
70
250
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)
-15
IL
ON/OFF pin input
current
VLOGIC=0.5V(ON)
-5
A
TO220-5L
2.5
TO263-5L
3.5
θJC
Thermal Resistence
PDIP8L
Junction
to case
12
/W
TO220-5L
28
TO263-5L
23
θJA
Thermal Resistence
with Copper Area of
Approximately 3 in
2
PDIP8L
Junction
to ambient
35
/W
Specifications with boldface type are for full operating temperature range, the other type are for TJ=25
C.
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| LSP3123K12E | 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO5 |
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