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参数资料
| 型号： | LSP3131SAG |
| 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： | 2/7页 |
| 文件大小： | 293K |
| 代理商： | LSP3131SAG |
Liteon Semiconductor Corporation
LSP3131
PWM Control 3A Step-Down Converter
Rev1.0
2/7
ABSOLUTE MAXIMUM RATINGS
(NOTE)
Parameter
Value
Unit
VCC Pin Voltage, VCC
VSS-0.3 to VSS+25
V
Feedback Pin Voltage, VFB
VSS-0.3 to VCC
V
EN Pin Voltage, VEN
VSS-0.3 to VIN + 0.3
V
Switch Pin Voltage, VOUTPUT
VSS-0.3 to VIN + 0.3
V
Power Dissipation, PD
Internally limited
mW
Operating Temperature Range, TOPR
-20 to +125
°C
Storage Temperature Range, TSTG
-40 to +150
°C
Note: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions
for long periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TA= 25°C, unless otherwise specified.)
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Input Voltage
VIN
3.6
23
V
Feedback Voltage
VFB
IIOUT= 0.1A
0.784
0.8
0.816
V
Feedback Bias Current
IFB
IIOUT= 0.1A
0.1
0.5
A
Switch Current
ISW
3.5
A
Current Consumption During
Power Off
ISSS
VEN = 0
10
A
Line Regulation
Δ
VOUT /VOUT VIN =5V~23V, IIOUT= 0.2A
1
2
%
Load Regulation
Δ
VOUT /VOUT
IIOUT= 0.1A~3A
0.2
0.5
%
Oscillation Frequency
fosc
Measure waveform at SW pin
240
300
360
KHz
Frequency of Current Limit or
Short Circuit Protect
fosc1
Measure waveform at SW pin
30
50
70
KHz
VSH
Evaluate oscillation at SW pin
2.0
Enable Pin Input Voltage
VSL
Evaluate oscillation stop at
SW pin
0.8
V
ISH
20
Enable Pin Input Leakage
Current
ISL
-10
A
OCSET Pin Bias Current
IOCSET
75
90
105
A
Soft-Start Time
TSS
0.3
2
5
ms
VIN =5V, VFB = 0
80
90
Internal MOSFET Rdson
Rdson
VIN =12V, VFB = 0
50
65
m
Efficiency
EFFI
VIN =12V, VOUT =5V,
IIOUT= 3A
91
%
Thermal Resistance
Junction to Ambient
θJA
65
°C/W
Thermal Resistance
Junction to Case
θJC
20
°C/W
Over temperature shutdown
TSD
150
°C
Over temperature shutdown
Hysteresis
THYS
25
°C
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