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参数资料
| 型号： | LSP3128SAD |
| 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： | 3/10页 |
| 文件大小： | 342K |
| 代理商： | LSP3128SAD |
Liteon Semiconductor Corporation
LSP3128
Wide Input 3A Step Down Converter
Rev1.0
2/10
ABSOLUTE MAXIMUM RATINGS
(NOTE)
Parameter
Value
Unit
IN to G
-0.3 to +34
V
EN to G
-0.3 to VIN + 0.3
V
SW to G
-1 to VIN + 1
V
BS to SW
-0.3 to +8
V
FB, COMP to G
-0.3 to +6
V
Continuous SW Current
Internally limited
A
Junction to Ambient Thermal Resistance (θJA)
46
°C/W
Maximum Power Dissipation
1.8
W
Operating Junction Temperature
-40 to 150
°C
Storage Temperature
-55 to 150
°C
Lead Temperature (Soldering, 10 sec)
300
°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
VOUT = 2.5V, ILOAD = 0A to 3A
4.5
30
V
Feedback Voltage
VFB
1.198
1.222
1.246
V
High-Side Switch On Resistance
RONH
100
m
Low-Side Switch On Resistance
RONL
10
SW Leakage
VEN = 0V, VIN = 12V, VSW = 0
0
10
A
Current Limit
ILIM
3.5
5
A
COMP to Current Limit
Transconductance
GCOMP
ILOAD/ICOMP
3
A/V
Error Amplifier Transconductance
GEA
ICOMP = ±10A
550
A/V
Error Amplifier DC Gain
AVEA
4000
V/V
Switching Frequency
fSW
340
400
460
KHz
Short Circuit Switching
Frequency
VFB = 0
40
KHz
Maximum Duty Cycle
DMAX
VFB = 1.1V, PWM mode
90
%
Minimum Duty Cycle
DMIN
VFB = 1.4V, PFM mode
0
%
Enable Threshold Voltage
Hysteresis = 0.1V
0.7
1
1.3
V
Enable Pull Up Current
P
in pulled up to VIN when left
unconnected
2
A
Supply Current in Shutdown
VEN = 0
6
20
A
IC Supply Current in Operation
VEN = 3V, not switching
0.85
2
mA
Thermal Shutdown Temperature
Hysteresis = 10°C
160
°C
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