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LR246 Datasheet(PDF) 3 Page - Leshan Radio Company

Part # LR246
Description  OverVoltage Function Fast 1.2MHz Switching Frequency High Efficiency: 85% Typical
PDF  8 Pages
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Manufacturer  LRC [Leshan Radio Company]
Direct Link  http://www.lrc.cn/
Logo LRC - Leshan Radio Company

LR246 Datasheet(HTML) 3 Page - Leshan Radio Company

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Electrical Characteristics
Tamb = 25
,
℃ V
IN=3V，VCE=3V,unless otherwise specified.
Parameter
Test Conditions / Pins
Min
Type
Max
Unit
Minimum Operating Voltage
2.5
V
Maximum Operating Voltage
10
V
Feedback Voltage
ISW=100mA,
Duty Cycle=66%
86
95
104
mV
FB Pin Bias Current
50
100
200
nA
Supply Current
VCE=0V
1.9
0.1
2.5
1
mA
uA
Switching Frequency
0.8
1.2
1.6
MHz
Maximum Duty Cycle
85
90
%
OVP Protection
27
V
Switch Current Limit
320
mA
Switch VCESAT
ISW =250mA
350
mV
Switch Leakage Current
VSW=5V
0.01
5
uA
CE Voltage High
1.5
V
CE Voltage Low
0.4
V
CE Pin Bias Current
65
uA
Typical Application
D4
1
2
PIN3(FB)
PIN1(SW)
0
L1
22uH
1
2
VCC
1k
gm
D1
CONTROL
SENSE
0
Fosc
PWM
D1
R1
VREF
+
+
SLOPE
PIN2(GND)
C2
0.22 u
C1
1u
PIN5(OVP)
D1
SHUTDOWN
CURRENT
PIN6(VIN)
-
HI
COMP
0
LESHAN RADIO COMPANY, LTD.
LR246
3/8



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