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LP3302S bảng dữ liệu(PDF) 4 Page - Lowpower Semiconductor inc

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Giải thích chi tiết về linh kiện  1.1MHz Fixed-Frequency PWM Operation
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nhà sản xuất  POWER [Lowpower Semiconductor inc]
Trang chủ  http://www.lowpowersemi.com
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LP3302S bảng dữ liệu(HTML) 4 Page - Lowpower Semiconductor inc

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Preliminary Datasheet
LP3302S
LP3302S –02
Version 1.2 Datasheet
Feb.-2012
www.lowpowersemi.com
Page 4 of 11
Absolute Maximum Ratings
Supply Input Voltage---------------------------------------------------------------------------------------------------−0.3V to 6.5V
LX Input Voltage --------------------------------------------------------------------------------------------------------−0.3V to 36V
OVP Voltage--------------------------------------------------------------------------------------------------------------−0.3V to 28V
The Other Pins ----------------------------------------------------------------------------------------------------------−0.3V to 5.5V
Power Dissipation, PD @ TA = 25°C SOT-23-6 -------------------------------------------------------------------------0.455W
Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------------------- 260°C
Operation Temperature Range ---------------------------------------------------------------------------------
−40°C to 80°C
Storage Temperature Range -----------------------------------------------------------------------------------
−65°C to 150°C
Electrical Characteristics
Parameter
Symbol
Test Condition
Min
Typ.
Max
Units
System Supply Input
Operation voltage Range
VDD
2.7
6
V
Under Voltage Lock Out
VDD
2.4
V
Supply Current
IDD
FB=0V, Switching
0.8
1.3
mA
Shut Down Current
IDD
VEN < 0.4V
0.1
1
uA
Line Regulation
VIN : 3.0~4.3V
3
%
Oscillator
Operation Frequency
FOSC
0.8
1.1
MHz
Maximum Duty Cycle
89
92
96
%
Dimming Frequency
100
100k
Hz
Feedback Voltage
LP3302S
235
250
270
mV
MOSFET
On Resistance of MOSFET
RDS(ON)
0.8
Ω
Protection
OVP Threshold
VOVP
27.5
29
V
OVP Sink Current
5
μ
A
OCP
850
mA
Shut Down Voltage
VEN
0.4
V
Enable Voltage
VEN
1.5
V



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