The REG710 is a switched capacitor voltage converterthat produces a regulated, low-ripple output voltage from an unregulated input voltage

REG710-27

Manufacturer Part NumberREG710-27
DescriptionThe REG710 is a switched capacitor voltage converterthat produces a regulated, low-ripple output voltage from an unregulated input voltage
ManufacturerTexas Instruments
REG710-27 datasheet
 


Specifications of REG710-27

Iout(max)(a)0.03Iq(typ)(ma)0.065
Switching Frequency(max)(khz)1000Vin(min)(v)1.8
Vin(max)(v)5.5Vout(min)(v)2.7
Vout(max)(v)2.7Preset Vout(v)2.7
Efficiency(typ)(%)90TopologyBuck-Boost
Operating Temperature Range(c)-40 to 85Pin/package6SOT-23
Regulated Outputs(#)1  
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REG710
SBAS221G – DECEMBER 2001 – REVISED JANUARY
EFFICIENCY
The efficiency of the charge pump regulator varies
with the output voltage version, the applied input
voltage, the load current, and the internal operation
mode of the device.
The approximate efficiency is given by:
Efficiency (%) = V
/(2
V )
100
´
´
OUT
IN
(step-up operating mode)
or
V
OUT
100
´
V
IN
(step-down operating mode)
Table 2
lists the approximate values of the input
voltage at which the device changes internal
operating mode. See efficiency curves in the
Characteristics
section for various loads and input
voltages.
Table 2. Operating Mode Change versus V
OPERATING MODE
PRODUCT
CHANGES AT V
REG710-2.5
REG710-2.7
REG710-3
REG710-3.3
REG710-5, REG71050,
Step-up only
REG71055
10
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2009...........................................................................................................................................
LAYOUT
Large transient currents flow in the V
GND traces. To minimize both input and output
ripple, keep the capacitors as close as possible to the
regulator using short, direct circuit traces.
A suggested printed circuit board (PCB) routing is
shown in
Figure
and output capacitors have been kept as short as
possible.
AREA: < 0.08 sq. inches
V
IN
Typical
Figure 21. Suggested PCB Design for Minimum
IN
OF
IN
> 3.2V
> 3.4V
> 3.7V
> 4.0V
Product Folder Link(s):
REG710
www.ti.com
, V
, and
IN
OUT
21. The trace lengths from the input
V
ENABLE
V
OUT
C
OUT
C
C
P
IN
GND
Ripple
Copyright © 2001–2009, Texas Instruments Incorporated