SAMHOP Microelectronics Corp.
1.2MHz STEP-UP CONVERTER
ELECTRICAL CHARACTERISTICS
Characteristic
Minimum operating voltage
Maximum operating voltage
Feedback voltage
FB pin bias current
Supply current
(T
A
=25
o
C , V
IN
=3V, V
SHDN
= 3V, unless otherwise noted)
Condition
Min.
2.5
-
I
SW
=100mA, Duty cycle=66%
86
10
-
SHDN=0V
Switching frequency
Maximum duty cycle
Switch current limit
Switch V
CESAT
Switch leakage current
SHDN voltage high
SHDN voltage low
SHDN pin bias current
I
SW
=250mA
V
SW
=5V
-
0.8
85
-
-
-
1.5
-
-
Typ.
-
-
95
45
1.9
0.1
1.2
90
320
350
0.01
-
-
65
Max.
-
10
104
100
2.5
1.0
1.6
-
-
-
5
-
0.4
-
Unit
V
V
mV
nA
mA
μA
MHz
%
mA
mV
μA
V
V
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
o
C to 70
o
C. Specification over the -40
o
C
to 85
o
C operating temperature range are assured by design, characterization and correlation with
statistical process controls.
Page 3
V.1.3 Aug 28,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
