ST5R25M 데이터 시트보기 (PDF) - STMicroelectronics

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ST5R25M

MICROPOWER VFM STEP-UP DC/DC CONVERTER

STMicroelectronics 

ST5R00

®

SERIES

MICROPOWER VFM STEP-UP DC/DC CONVERTER

s VERY LOW SUPPLY CURRENT

s REGULATED OUTPUT VOLTAGE

s WIDE RANGE OF OUTPUT VOLTAGE

AVAILABLE (2.5V, 2.8V, 3.0V, 3.3V, 5.0V)

s OUTPUT VOLTAGE ACCURACY ±5%

s OUTPUT CURRENT UP TO 100mA

s LOW RIPPLE AND LOW NOISE

s VERY LOW START-UP VOLTAGE

s HIGH EFFICIENCY (VOUT=5V TYP. 87%)

s FEW EXTERNAL COMPONENTS

s VERY SMALL PACKAGE: SOT23-5L, SOT-89

DESCRIPTION

The ST5R00 is an high efficiency VFM Step-up

DC/DC converter for small, low input voltage or

battery powered systems with ultra low quiescent

supply current. The ST5Rxx accept a positive

input voltage from start-up voltage to VOUT and

convert it to a higher output voltage in the 2.5 to

5V range.

The ST5R00 combine ultra low quiescent supply

current and high efficiency to give maximum

battery life. The high switching frequency and

the internally limited peak inductor current,

permits the use of small, low cost inductors. Only

three external components are nedeed: an

inductor a diode and an output capacitor.

SOT23-5L

SOT-89

The ST5R00 is suitable to be used in a battery

powered equipment where low noise, low ripple

and ultra low supply current are required. The

ST5R00 is available in very small packages:

SOT23-5L, SOT-89.

Typical applications are pagers, cameras &

video camera, cellular telephones, wireless

telephones, palmtop computer, battery backup

supplies, battery powered equipment.

SCHEMATIC DIAGRAM

June 2001

1/13

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