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参数资料
| 型号： | LSP3125SAE |
| 厂商： | LITE-ON SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 7.5 A SWITCHING CONTROLLER, 173 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | SOP-8 |
| 文件页数： | 2/9页 |
| 文件大小： | 499K |
| 代理商： | LSP3125SAE |
Liteon Semiconductor Corporation
LSP3125
150KHZ 2A PWM Buck DC/DC Converter
Rev1.3
2/9
ABSOLUTE MAXIMUM RATINGS
Parameter
Value
Unit
Supply Voltage
+24
V
On/Off Pin Input Voltage
-0.3 to +18
V
Feedback Pin Voltage
-0.3 to +18
V
Output Voltage to Ground
-1
V
Power Dissipation
Internally Limited
W
Storage Temperature
-65 to +150
Operating Temperature
-40 to +125
Operating Voltage
+4.5 to +22
V
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, VIN=12V for 3.3V, 5V and adjustable version and VIN=18V for the 12V version. ILOAD =
0.5A)
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
-50
Feedback Bias Current
IFB
VFB = 1.3V
(Adjustable Version Only)
-10
-100
nA
127
150
173
Oscillator Frequency
Fosc
110
173
kHz
Short Circuit Oscillator
Frequency
FCSP
When Current Limit Occur and
VFB ＜ 0.5V, TA=25°C
10
30
50
kHz
1.4
Saturation Voltage
VSAT
IOUT= 2A, No Outside Circuit ,
VFB = 0V force drive on
1.25
1.5
V
Maximum Duty Cycle(On)
VFB = 0V force drive on
100
Minimum Duty Cycle(Off)
DC
VFB =12V force drive off
0
%
3.6
6.9
Current Limit
ICL
Peak Current
No Outside Circuit ,
VFB = 0V force drive on
3.4
7.5
A
Output=0
No Outside Circuit ,
VFB = 12V force drive off
-50
A
Output=-1
Output
Leakage
Current
IL
VIN = 22V
-30
mA
Quiescent Current
IQ
VFB = 12V force drive off
5
10
mA
200
Standby Quiescent Current
ISTBY
ON/OFF Pin=5V,VIN = 22V
70
250
A
VIL
Low (Regulator ON)
0.6
ON/OFF Pin Logic Input
Threshold Voltage
VIH
High (Regulator OFF)
2.0
1.3
V
ON/OFF Pin Input Current
IL
VLOGIC=0.5V(ON)
-5
ON/OFF Pin Logic Input
Current
IH
VLOGIC=2.5V(OFF)
-15
A
Thermal Resistance
θJC
SOP8L
Junction to Case
15
Thermal Resistance with
Copper Area of Approximately
3 in
2
θJA
SOP8L
Junction to
Ambient
70
/W
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