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ST5R25U 数据表(PDF) 1 Page - STMicroelectronics

部件名 ST5R25U
功能描述  MICROPOWER VFM STEP-UP DC/DC CONVERTER
Download  15 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST5R25U 数据表(HTML) 1 Page - STMicroelectronics

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June 2005
I
VERY LOW SUPPLY CURRENT
I
REGULATED OUTPUT VOLTAGE
I
WIDE RANGE OF OUTPUT VOLTAGE
AVAILABLE (2.5V, 2.8V, 3.0V, 3.3V, 5.0V)
I
OUTPUT VOLTAGE ACCURACY ±5%
I
OUTPUT CURRENT UP TO 100mA
I
LOW RIPPLE AND LOW NOISE
I
VERY LOW START-UP VOLTAGE
I
HIGH EFFICIENCY (VOUT = 5V TYP. 87%)
I
FEW EXTERNAL COMPONENTS
I
VERY SMALL PACKAGE: SOT23-5L
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 needed: an inductor a
diode and an output capacitor.
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.
Typical applications are pagers, cameras & video
camera, cellular telephones, wireless telephones,
palmtop
computer,
battery
backup
supplies,
battery powered equipment.
ST5R00
SERIES
MICROPOWER VFM STEP-UP DC/DC CONVERTER
Figure 1: Schematic Diagram
SOT23-5L
Rev. 6


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