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REG710 데이터시트(PDF) 10 Page - Texas Instruments

부품명 REG710
상세설명  60mA, 5.0V, Buck/Boost Charge Pump in ThinSOT-23 and ThinQFN
PDF  22 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

REG710 데이터시트(HTML) 10 Page - Texas Instruments

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EFFICIENCY
LAYOUT
Efficiency(%)=V
/(2
V )
100
(step-upoperatingmode)
or
(step-downoperatingmode)
OUT
IN
´
´
V
V
OUT
IN
´ 100
V
ENABLE
V
IN
C
IN
GND
C
P
V
OUT
C
OUT
AREA:<0.08sq.inches
REG710
SBAS221F – DECEMBER 2001 – REVISED MARCH 2008............................................................................................................................................... www.ti.com
The efficiency of the charge pump regulator varies
Large transient currents flow in the VIN, VOUT, and
with the output voltage version, the applied input
GND traces. To minimize both input and output
voltage, the load current, and the internal operation
ripple, keep the capacitors as close as possible to the
mode of the device.
regulator using short, direct circuit traces.
The approximate efficiency is given by:
A suggested printed circuit board (PCB) routing is
shown in Figure 21. The trace lengths from the input
and output capacitors have been kept as short as
possible.
Table 2 lists the approximate values of the input
voltage
at
which
the
device
changes
internal
operating mode. See efficiency curves in the Typical
Characteristics section for various loads and input
voltages.
Figure 21. Suggested PCB Design for Minimum
Ripple
Table 2. Operating Mode Change versus VIN
OPERATING MODE
PRODUCT
CHANGES AT VIN OF
REG710-2.5
> 3.2V
REG710-2.7
> 3.4V
REG710-3
> 3.7V
REG710-3.3
> 4.0V
REG710-5, REG71050,
Step-up only
REG71055
10
Submit Documentation Feedback
Copyright © 2001–2008, Texas Instruments Incorporated
Product Folder Link(s): REG710



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