SM8237 Datasheet, PDF (4/14 Pages) SamHop Microelectronics Corp. – 1.2MHz STEP-UP CONVERTER

SAMHOP Microelectronics Corp.
1.2MHz STEP-UP CONVERTER
ELECTRICAL CHARACTERISTICS
(TA =25^oC , VIN =3V, VSHDN = 3V, unless otherwise noted)
Characteristic
Condition
Min. Typ. 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
10 45 100 nA
Supply current
Switching frequency
SHDN=0V
- 1.9 2.5 mA
- 0.1 1.0 μA
0.8 1.2 1.6 MHz
Maximum duty cycle
85 90 - %
Switch current limit
- 320 - mA
Switch VCESAT
ISW =250mA
- 350 - mV
Switch leakage current
VSW =5V
- 0.01 5 μA
SHDN voltage high
1.5 -
-
V
SHDN voltage low
-
- 0.4 V
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 -40^oC
to 85^oC operating temperature range are assured by design, characterization and correlation with
statistical process controls.
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V.1.3 Aug 28,2007