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Analog Devices - 50 mA Switched Capacitor Voltage Boost with Regulated Output

Numéro de référence ADP3607ARU
Description 50 mA Switched Capacitor Voltage Boost with Regulated Output
Fabricant Analog Devices 
Logo Analog Devices 





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ADP3607ARU fiche technique
a
50 mA Switched Capacitor
Voltage Boost with Regulated Output
ADP3607
FEATURES
Fully Regulated Output Voltage (5 V and Adjustable)
Input Voltage Range From 3 V to 5 V
50 mA Output Current
Output Accuracy: ؎5%
High Switching Frequency: 250 kHz
SO-8 and TSSOP-8 Packages
–40؇C to +85؇C Ambient Temperature Range
APPLICATIONS
Computer Peripherals and Add-On Cards
Portable Instruments
Battery Powered Devices
Pagers and Radio Control Receivers
Disk Drives
Mobile Phones
FUNCTIONAL BLOCK DIAGRAM
CP+
CP
S1
VIN
S3
S4
S2 VOUT
OSC
SD CLOCK
GEN
1.5 V
VREF
FB
VSENSE
GENERAL DESCRIPTION
The ADP3607 is a 50 mA regulated output switched capacitor
voltage doubler. It provides a regulated output voltage with
minimum voltage loss and requires a minimum number of ex-
ternal components. In addition, the ADP3607 does not require
the use of an inductor.
The internal oscillator of the ADP3607 runs at 500 kHz nomi-
nal frequency, which produces an output switching frequency of
250 kHz. This allows for the use of smaller charge pump and
filter capacitors.
The ADP3607 provides an accuracy of ± 5% with a typical shut-
down current of 150 µA. It can also operate from a single posi-
tive input voltage as low as 3 V. The ADP3607 is offered with
the regulation fixed at 5 V, or adjustable via external resistors
over a 3 V to 9 V range.
GND
SD103
VIN
3.3V *CIN+
4.7F
* CP
4.7F
+
D1
VIN
CP+
VOUT
ADP3607-5
VOUT
+
5.0V
* CO
4.7F
CP
OFF
SD
ON
0
GND
VSENSE
*FOR BEST PERFORMANCE, 10F IS RECOMMENDED
CP : SPRAGUE, 293D475X0010B2W
CIN, CO: TOKIN, 1E475ZY5UC205F
Figure 1. Typical Application Circuit
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999

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