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SM8237 Folha de dados(PDF) 4 Page - SamHop Microelectronics Corp.

Nome de Peças SM8237
Descrição Electrónicos  1.2MHz STEP-UP CONVERTER
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Fabricante Electrônico  SAMHOP [SamHop Microelectronics Corp.]
Página de início  http://www.samhop.com.tw
Logo SAMHOP - SamHop Microelectronics Corp.

SM8237 Folha de dados(HTML) 4 Page - SamHop Microelectronics Corp.

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SAMHOP Microelectronics Corp.
1.2MHz STEP-UP CONVERTER
ELECTRICAL CHARACTERISTICS
(TA =25oC, VIN =3V, VSHDN = 3V, unless otherwise noted)
Characteristic
Unit
Min. Typ. Max.
Condition
Minimum operating voltage
V
2.5
-
-
Maximum operating voltage
V
-
-
10
Feedback voltage
mV
86
95
104
ISW =100mA, Duty cycle=66%
FB pin bias current
nA
10
45
100
Supply current
mA
-
1.9
2.5
SHDN=0V
μA
-
0.1
1.0
Switching frequency
MHz
0.8
1.2
1.6
Maximum duty cycle
%
85
90
-
Switch current limit
mA
-
320
-
Switch VCESAT
mV
-
350
-
ISW =250mA
Switch leakage current
μA
-
0.01
5
SHDN voltage high
V
1.5
-
-
VSW =5V
SHDN voltage low
V
-
-
0.4
SHDN pin bias current
-
65
-
μA
Note :
1. Absolute maximum ratings are those values beyond which the life of the device may be impaired.
2. The SM8237 is guatanteed to meet specification from 0 oC to 70 oC. Specification over the -40oC
to 85oC operating temperature range are assured by design, characterization and correlation with
statistical process controls.
Page 3
V.1.3 Aug 28,2007


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